2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
64 - E.g.: device_mode=0660
70 The PCM OSS emulation module.
71 This module takes options which change the mapping of devices.
73 dsp_map - PCM device number maps assigned to the 1st OSS device.
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
78 - Don't block opening busy PCM devices. Default: 1
80 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
81 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
82 to PCM #0 of the card #0.
83 For changing the second or later card, specify the option with
84 commas, such like "dsp_map=0,1".
86 nonblock_open option is used to change the behavior of the PCM
87 regarding opening the device. When this option is non-zero,
88 opening a busy OSS PCM device won't be blocked but return
89 immediately with EAGAIN (just like O_NONBLOCK flag).
94 This module takes options which change the mapping of devices.
95 similar to those of the snd-pcm-oss module.
97 midi_map - MIDI device number maps assigned to the 1st OSS device.
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
102 Common parameters for top sound card modules
103 --------------------------------------------
105 Each of top level sound card module takes the following options.
107 index - index (slot #) of sound card
108 - Values: 0 through 31 or negative
109 - If nonnegative, assign that index number
110 - if negative, interpret as a bitmask of permissible
111 indices; the first free permitted index is assigned
113 id - card ID (identifier or name)
114 - Can be up to 15 characters long
115 - Default: the card type
116 - A directory by this name is created under /proc/asound/
117 containing information about the card
118 - This ID can be used instead of the index number in
121 - Default: enabled, for PCI and ISA PnP cards
126 Module for AdLib FM cards.
128 port - port # for OPL chip
130 This module supports multiple cards. It does not support autoprobe, so
131 the port must be specified. For actual AdLib FM cards it will be 0x388.
132 Note that this card does not have PCM support and no mixer; only FM
135 Make sure you have "sbiload" from the alsa-tools package available and,
136 after loading the module, find out the assigned ALSA sequencer port
137 number through "sbiload -l". Example output:
139 Port Client name Port name
140 64:0 OPL2 FM synth OPL2 FM Port
142 Load the std.sb and drums.sb patches also supplied by sbiload:
144 sbiload -p 64:0 std.sb drums.sb
146 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
147 instead. To have the card produce sound, use aplaymidi from alsa-utils:
149 aplaymidi -p 64:0 foo.mid
154 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
156 port - port # for AD1816A chip (PnP setup)
157 mpu_port - port # for MPU-401 UART (PnP setup)
158 fm_port - port # for OPL3 (PnP setup)
159 irq - IRQ # for AD1816A chip (PnP setup)
160 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
161 dma1 - first DMA # for AD1816A chip (PnP setup)
162 dma2 - second DMA # for AD1816A chip (PnP setup)
163 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
165 This module supports multiple cards, autoprobe and PnP.
170 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
172 port - port # for AD1848 chip
173 irq - IRQ # for AD1848 chip
174 dma1 - DMA # for AD1848 chip (0,1,3)
176 This module supports multiple cards. It does not support autoprobe
177 thus main port must be specified!!! Other ports are optional.
179 The power-management is supported.
184 Module for Analog Devices AD1889 chips.
186 ac97_quirk - AC'97 workaround for strange hardware
187 See the description of intel8x0 module for details.
189 This module supports multiple cards.
194 Module for ALi M5451 PCI chip.
196 pcm_channels - Number of hardware channels assigned for PCM
197 spdif - Support SPDIF I/O
200 This module supports one chip and autoprobe.
202 The power-management is supported.
207 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
209 port - port # for ALS100 (SB16) chip (PnP setup)
210 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
211 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
212 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
213 mpu_port - port # for MPU-401 UART (PnP setup)
214 mpu_irq - IRQ # for MPU-401 (PnP setup)
215 fm_port - port # for OPL3 FM (PnP setup)
217 This module supports multiple cards, autoprobe and PnP.
219 The power-management is supported.
224 Module for Avance Logic ALS300 and ALS300+
226 This module supports multiple cards.
228 The power-management is supported.
233 Module for sound cards based on Avance Logic ALS4000 PCI chip.
235 joystick_port - port # for legacy joystick support.
236 0 = disabled (default), 1 = auto-detect
238 This module supports multiple cards, autoprobe and PnP.
240 The power-management is supported.
245 Module for ATI IXP 150/200/250/400 AC97 controllers.
247 ac97_clock - AC'97 clock (default = 48000)
248 ac97_quirk - AC'97 workaround for strange hardware
249 See "AC97 Quirk Option" section below.
250 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
252 This module supports one card and autoprobe.
254 ATI IXP has two different methods to control SPDIF output. One is
255 over AC-link and another is over the "direct" SPDIF output. The
256 implementation depends on the motherboard, and you'll need to
257 choose the correct one via spdif_aclink module option.
259 The power-management is supported.
261 Module snd-atiixp-modem
262 -----------------------
264 Module for ATI IXP 150/200/250 AC97 modem controllers.
266 This module supports one card and autoprobe.
268 Note: The default index value of this module is -2, i.e. the first
271 The power-management is supported.
273 Module snd-au8810, snd-au8820, snd-au8830
274 -----------------------------------------
276 Module for Aureal Vortex, Vortex2 and Advantage device.
278 pcifix - Control PCI workarounds
279 0 = Disable all workarounds
280 1 = Force the PCI latency of the Aureal card to 0xff
281 2 = Force the Extend PCI#2 Internal Master for Efficient
282 Handling of Dummy Requests on the VIA KT133 AGP Bridge
283 3 = Force both settings
284 255 = Autodetect what is required (default)
286 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
287 EQ, mpu401, gameport. A3D and wavetable support are still in development.
288 Development and reverse engineering work is being coordinated at
289 http://savannah.nongnu.org/projects/openvortex/
290 SPDIF output has a copy of the AC97 codec output, unless you use the
291 "spdif" pcm device, which allows raw data passthru.
292 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
295 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
296 control correctly. If you have problems regarding this, try
297 another ALSA compliant mixer (alsamixer works).
302 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
304 port - port # for AZT2320 chip (PnP setup)
305 wss_port - port # for WSS (PnP setup)
306 mpu_port - port # for MPU-401 UART (PnP setup)
307 fm_port - FM port # for AZT2320 chip (PnP setup)
308 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
309 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
310 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
311 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
313 This module supports multiple cards, PnP and autoprobe.
315 The power-management is supported.
320 Module for sound cards based on Aztech AZF3328 PCI chip.
322 joystick - Enable joystick (default off)
324 This module supports multiple cards.
329 Module for video cards based on Bt87x chips.
331 digital_rate - Override the default digital rate (Hz)
332 load_all - Load the driver even if the card model isn't known
334 This module supports multiple cards.
336 Note: The default index value of this module is -2, i.e. the first
342 Module for Creative Audigy LS and SB Live 24bit
344 This module supports multiple cards.
350 Module for sound cards based on C-Media CMI8330 ISA chips.
352 wssport - port # for CMI8330 chip (WSS)
353 wssirq - IRQ # for CMI8330 chip (WSS)
354 wssdma - first DMA # for CMI8330 chip (WSS)
355 sbport - port # for CMI8330 chip (SB16)
356 sbirq - IRQ # for CMI8330 chip (SB16)
357 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
358 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
360 This module supports multiple cards and autoprobe.
362 The power-management is supported.
367 Module for C-Media CMI8338 and 8738 PCI sound cards.
369 mpu_port - 0x300,0x310,0x320,0x330 = legacy port,
370 1 = integrated PCI port,
371 0 = disable (default)
372 fm_port - 0x388 (default), 0 = disable (default)
373 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
375 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
377 This module supports autoprobe and multiple cards.
379 The power-management is supported.
384 Module for sound cards based on CS4231 ISA chips.
386 port - port # for CS4231 chip
387 mpu_port - port # for MPU-401 UART (optional), -1 = disable
388 irq - IRQ # for CS4231 chip
389 mpu_irq - IRQ # for MPU-401 UART
390 dma1 - first DMA # for CS4231 chip
391 dma2 - second DMA # for CS4231 chip
393 This module supports multiple cards. This module does not support autoprobe
394 thus main port must be specified!!! Other ports are optional.
396 The power-management is supported.
401 Module for sound cards based on CS4232/CS4232A ISA chips.
403 port - port # for CS4232 chip (PnP setup - 0x534)
404 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
405 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
406 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
407 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
408 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
409 dma1 - first DMA # for CS4232 chip (0,1,3)
410 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
411 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
413 This module supports multiple cards. This module does not support autoprobe
414 thus main port must be specified!!! Other ports are optional.
416 The power-management is supported.
421 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
422 CS4238B/CS4239 ISA chips.
424 port - port # for CS4236 chip (PnP setup - 0x534)
425 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
426 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
427 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
428 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
429 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
430 dma1 - first DMA # for CS4236 chip (0,1,3)
431 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
432 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
468 Module snd-cs5535audio
469 ----------------------
471 Module for multifunction CS5535 companion PCI device
473 The power-management is supported.
478 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
481 port - Port # (PnP setup)
482 mpu_port - Port # for MPU-401 (PnP setup)
483 fm_port - Port # for FM OPL-3 (PnP setup)
484 irq - IRQ # (PnP setup)
485 mpu_irq - IRQ # for MPU-401 (PnP setup)
486 dma8 - DMA # (PnP setup)
488 This module supports multiple cards. This module is enabled only with
491 The power-management is supported.
496 Module for the dummy sound card. This "card" doesn't do any output
497 or input, but you may use this module for any application which
498 requires a sound card (like RealPlayer).
500 The power-management is supported.
505 Module for EMU10K1/EMU10k2 based PCI sound cards.
506 * Sound Blaster Live!
507 * Sound Blaster PCI 512
508 * Emu APS (partially supported)
509 * Sound Blaster Audigy
511 extin - bitmap of available external inputs for FX8010 (see bellow)
512 extout - bitmap of available external outputs for FX8010 (see bellow)
513 seq_ports - allocated sequencer ports (4 by default)
514 max_synth_voices - limit of voices used for wavetable (64 by default)
515 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
516 given in MB unit. Default value is 128.
517 enable_ir - enable IR
519 This module supports multiple cards and autoprobe.
521 Input & Output configurations [extin/extout]
522 * Creative Card wo/Digital out [0x0003/0x1f03]
523 * Creative Card w/Digital out [0x0003/0x1f0f]
524 * Creative Card w/Digital CD in [0x000f/0x1f0f]
525 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
526 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
527 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
528 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
529 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
530 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
531 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
532 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
533 * Creative Card all ins and outs [0x3fff/0x7fff]
535 The power-management is supported.
540 Module for Creative Emu10k1X (SB Live Dell OEM version)
542 This module supports multiple cards.
547 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
548 * SoundBlaster PCI 64
549 * SoundBlaster PCI 128
551 joystick - Enable joystick (default off)
553 This module supports multiple cards and autoprobe.
555 The power-management is supported.
560 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
561 * SoundBlaster PCI 64
562 * SoundBlaster PCI 128
563 * SoundBlaster Vibra PCI
565 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
566 0 = disable (default), 1 = auto-detect
568 This module supports multiple cards and autoprobe.
570 The power-management is supported.
575 Module for sound cards based on ESS ES968 chip (PnP only).
577 port - port # for ES968 (SB8) chip (PnP setup)
578 irq - IRQ # for ES968 (SB8) chip (PnP setup)
579 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
581 This module supports multiple cards, PnP and autoprobe.
583 The power-management is supported.
588 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
590 port - port # for ES-1688 chip (0x220,0x240,0x260)
591 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
592 irq - IRQ # for ES-1688 chip (5,7,9,10)
593 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
594 dma8 - DMA # for ES-1688 chip (0,1,3)
596 This module supports multiple cards and autoprobe (without MPU-401 port).
601 Module for ESS AudioDrive ES-18xx sound cards.
603 port - port # for ES-18xx chip (0x220,0x240,0x260)
604 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
605 fm_port - port # for FM (optional, not used)
606 irq - IRQ # for ES-18xx chip (5,7,9,10)
607 dma1 - first DMA # for ES-18xx chip (0,1,3)
608 dma2 - first DMA # for ES-18xx chip (0,1,3)
609 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
611 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
612 port if native ISA PnP routines are not used).
613 When dma2 is equal with dma1, the driver works as half-duplex.
615 The power-management is supported.
620 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
622 This module supports multiple cards and autoprobe.
624 The power-management is supported.
629 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
631 total_bufsize - total buffer size in kB (1-4096kB)
632 pcm_substreams_p - playback channels (1-8, default=2)
633 pcm_substreams_c - capture channels (1-8, default=0)
634 clock - clock (0 = auto-detection)
635 use_pm - support the power-management (0 = off, 1 = on,
637 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
638 joystick - enable joystick (default off)
640 This module supports multiple cards and autoprobe.
642 The power-management is supported.
647 Module for ForteMedia FM801 based PCI sound cards.
649 tea575x_tuner - Enable TEA575x tuner
650 - 1 = MediaForte 256-PCS
651 - 2 = MediaForte 256-PCPR
652 - 3 = MediaForte 64-PCR
653 - High 16-bits are video (radio) device number + 1
654 - example: 0x10002 (MediaForte 256-PCPR, device 1)
656 This module supports multiple cards and autoprobe.
658 The power-management is supported.
660 Module snd-gusclassic
661 ---------------------
663 Module for Gravis UltraSound Classic sound card.
665 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
666 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
667 dma1 - DMA # for GF1 chip (1,3,5,6,7)
668 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
669 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
670 voices - GF1 voices limit (14-32)
671 pcm_voices - reserved PCM voices
673 This module supports multiple cards and autoprobe.
675 Module snd-gusextreme
676 ---------------------
678 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
680 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
681 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
682 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
683 irq - IRQ # for ES-1688 chip (5,7,9,10)
684 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
685 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
686 dma8 - DMA # for ES-1688 chip (0,1,3)
687 dma1 - DMA # for GF1 chip (1,3,5,6,7)
688 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
689 voices - GF1 voices limit (14-32)
690 pcm_voices - reserved PCM voices
692 This module supports multiple cards and autoprobe (without MPU-401 port).
697 Module for Gravis UltraSound MAX sound card.
699 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
700 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
701 dma1 - DMA # for GF1 chip (1,3,5,6,7)
702 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
703 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
704 voices - GF1 voices limit (14-32)
705 pcm_voices - reserved PCM voices
707 This module supports multiple cards and autoprobe.
712 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
713 ATI SB450, SB600, RS600,
717 model - force the model name
718 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
719 single_cmd - Use single immediate commands to communicate with
720 codecs (for debugging only)
722 This module supports one card and autoprobe.
724 Each codec may have a model table for different configurations.
725 If your machine isn't listed there, the default (usually minimal)
726 configuration is set up. You can pass "model=<name>" option to
727 specify a certain model in such a case. There are different
728 models depending on the codec chip.
730 Model name Description
731 ---------- -----------
733 3stack 3-jack in back and a headphone out
734 3stack-digout 3-jack in back, a HP out and a SPDIF out
735 5stack 5-jack in back, 2-jack in front
736 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
737 6stack 6-jack in back, 2-jack in front
738 6stack-digout 6-jack with a SPDIF out
740 z71v 3-jack (HP shared SPDIF)
744 lg LG laptop (m1 express dual)
746 test for testing/debugging purpose, almost all controls can be
747 adjusted. Appearing only when compiled with
749 auto auto-config reading BIOS (default)
753 fujitsu Fujitsu S7020
755 basic fixed pin assignment (old default model)
756 auto auto-config reading BIOS (default)
759 fujitsu Fujitsu Laptop
760 basic fixed pin assignment w/o SPDIF
761 auto auto-config reading BIOS (default)
764 3stack-dig 3-jack with SPDIF I/O
765 6stck-dig 6-jack digital with SPDIF I/O
766 auto auto-config reading BIOS (default)
770 3stack-dig 3-jack with SPDIF I/O
771 6stack-dig 6-jack with SPDIF I/O
772 auto auto-config reading BIOS (default)
775 minimal 3-jack in back
776 min_fp 3-jack in back, 2-jack in front
777 full 6-jack in back, 2-jack in front
778 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
779 allout 5-jack in back, 2-jack in front, SPDIF out
780 auto auto-config reading BIOS (default)
783 basic 3-jack (default)
785 thinkpad Lenovo Thinkpad T60/X60/Z60
788 6stack 6-jack, separate surrounds (default)
789 3stack 3-stack, shared surrounds
790 laptop 2-channel only (FSC V2060, Samsung M50)
791 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
795 6stack-dig ditto with SPDIF
797 3stack-dig ditto with SPDIF
798 laptop 3-jack with hp-jack automute
799 laptop-dig ditto with SPDIF
800 auto auto-confgi reading BIOS (default)
803 vaio Setup for VAIO FE550G/SZ110
805 If the default configuration doesn't work and one of the above
806 matches with your device, report it together with the PCI
807 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
808 ML (see the section "Links and Addresses").
810 Note 2: If you get click noises on output, try the module option
811 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
812 register value without FIFO size correction as the current
813 DMA pointer. position_fix=2 will make the driver to use
814 the position buffer instead of reading SD_LPIB register.
815 (Usually SD_LPLIB register is more accurate than the
818 NB: If you get many "azx_get_response timeout" messages at
819 loading, it's likely a problem of interrupts (e.g. ACPI irq
820 routing). Try to boot with options like "pci=noacpi". Also, you
821 can try "single_cmd=1" module option. This will switch the
822 communication method between HDA controller and codecs to the
823 single immediate commands instead of CORB/RIRB. Basically, the
824 single command mode is provided only for BIOS, and you won't get
825 unsolicited events, too. But, at least, this works independently
826 from the irq. Remember this is a last resort, and should be
827 avoided as much as possible...
829 The power-management is supported.
834 Module for RME Hammerfall DSP audio interface(s)
836 This module supports multiple cards.
838 Note: The firmware data can be automatically loaded via hotplug
839 when CONFIG_FW_LOADER is set. Otherwise, you need to load
840 the firmware via hdsploader utility included in alsa-tools
842 The firmware data is found in alsa-firmware package.
844 Note: snd-page-alloc module does the job which snd-hammerfall-mem
845 module did formerly. It will allocate the buffers in advance
846 when any HDSP cards are found. To make the buffer
847 allocation sure, load snd-page-alloc module in the early
848 stage of boot sequence. See "Early Buffer Allocation"
854 Module for RME HDSP MADI board.
856 precise_ptr - Enable precise pointer, or disable.
857 line_outs_monitor - Send playback streams to analog outs by default.
858 enable_monitor - Enable Analog Out on Channel 63/64 by default.
860 See hdspm.txt for details.
865 Module for Envy24 (ICE1712) based PCI sound cards.
866 * MidiMan M Audio Delta 1010
867 * MidiMan M Audio Delta 1010LT
868 * MidiMan M Audio Delta DiO 2496
869 * MidiMan M Audio Delta 66
870 * MidiMan M Audio Delta 44
871 * MidiMan M Audio Delta 410
872 * MidiMan M Audio Audiophile 2496
878 * Hoontech SoundTrack DSP 24
879 * Hoontech SoundTrack DSP 24 Value
880 * Hoontech SoundTrack DSP 24 Media 7.1
881 * Event Electronics, EZ8
883 * Lionstracs, Mediastaton
885 model - Use the given board model, one of the following:
886 delta1010, dio2496, delta66, delta44, audiophile, delta410,
887 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
888 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
889 phase88, mediastation
890 omni - Omni I/O support for MidiMan M-Audio Delta44/66
891 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
892 in msec resolution, default value is 500 (0.5 sec)
894 This module supports multiple cards and autoprobe. Note: The consumer part
895 is not used with all Envy24 based cards (for example in the MidiMan Delta
898 Note: The supported board is detected by reading EEPROM or PCI
899 SSID (if EEPROM isn't available). You can override the
900 model by passing "model" module option in case that the
901 driver isn't configured properly or you want to try another
907 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
908 * MidiMan M Audio Revolution 5.1
909 * MidiMan M Audio Revolution 7.1
911 * TerraTec Aureon 5.1 Sky
912 * TerraTec Aureon 7.1 Space
913 * TerraTec Aureon 7.1 Universe
916 * AudioTrak Prodigy 7.1
917 * AudioTrak Prodigy 7.1LT
918 * AudioTrak Prodigy 192
920 * Albatron K8X800 Pro II
927 model - Use the given board model, one of the following:
928 revo51, revo71, amp2000, prodigy71, prodigy71lt,
929 prodigy192, aureon51, aureon71, universe,
930 k8x800, phase22, phase28, ms300, av710
932 This module supports multiple cards and autoprobe.
934 Note: The supported board is detected by reading EEPROM or PCI
935 SSID (if EEPROM isn't available). You can override the
936 model by passing "model" module option in case that the
937 driver isn't configured properly or you want to try another
943 Module for AC'97 motherboards from Intel and compatibles.
944 * Intel i810/810E, i815, i820, i830, i84x, MX440
945 ICH5, ICH6, ICH7, ESB2
947 * NVidia NForce, NForce2, NForce3, MCP04, CK804
949 * AMD AMD768, AMD8111
952 ac97_clock - AC'97 codec clock base (0 = auto-detect)
953 ac97_quirk - AC'97 workaround for strange hardware
954 See "AC97 Quirk Option" section below.
955 buggy_irq - Enable workaround for buggy interrupts on some
956 motherboards (default yes on nForce chips,
958 buggy_semaphore - Enable workaround for hardwares with buggy
959 semaphores (e.g. on some ASUS laptops)
962 This module supports one chip and autoprobe.
964 Note: the latest driver supports auto-detection of chip clock.
965 if you still encounter too fast playback, specify the clock
966 explicitly via the module option "ac97_clock=41194".
968 Joystick/MIDI ports are not supported by this driver. If your
969 motherboard has these devices, use the ns558 or snd-mpu401
970 modules, respectively.
972 The power-management is supported.
977 Module for Intel ICH (i8x0) chipset MC97 modems.
978 * Intel i810/810E, i815, i820, i830, i84x, MX440
981 * NVidia NForce, NForce2, NForce2s, NForce3
985 ac97_clock - AC'97 codec clock base (0 = auto-detect)
987 This module supports one card and autoprobe.
989 Note: The default index value of this module is -2, i.e. the first
992 The power-management is supported.
997 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
998 and other sound cards based on AMD InterWave (tm) chip.
1000 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1001 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1002 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1003 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1004 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1005 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1006 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1007 effect - 1 = InterWave effects enable (default 0);
1010 This module supports multiple cards, autoprobe and ISA PnP.
1012 Module snd-interwave-stb
1013 ------------------------
1015 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1016 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1017 circuit for extended control of bass, treble and master volume.
1019 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1020 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1021 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1022 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1023 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1024 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1025 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1026 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1027 effect - 1 = InterWave effects enable (default 0);
1030 This module supports multiple cards, autoprobe and ISA PnP.
1035 Module for Korg 1212 IO PCI card
1037 This module supports multiple cards.
1042 Module for Allegro/Maestro3 chips
1044 external_amp - enable external amp (enabled by default)
1045 amp_gpio - GPIO pin number for external amp (0-15) or
1046 -1 for default pin (8 for allegro, 1 for
1049 This module supports autoprobe and multiple chips.
1051 Note: the binding of amplifier is dependent on hardware.
1052 If there is no sound even though all channels are unmuted, try to
1053 specify other gpio connection via amp_gpio option.
1054 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1057 The power-management is supported.
1062 Module for Miro soundcards: miroSOUND PCM 1 pro,
1064 miroSOUND PCM 20 Radio.
1066 port - Port # (0x530,0x604,0xe80,0xf40)
1067 irq - IRQ # (5,7,9,10,11)
1068 dma1 - 1st dma # (0,1,3)
1069 dma2 - 2nd dma # (0,1)
1070 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1071 mpu_irq - MPU-401 irq # (5,7,9,10)
1072 fm_port - FM Port # (0x388)
1073 wss - enable WSS mode
1074 ide - enable onboard ide support
1079 Module for Digigram miXart8 sound cards.
1081 This module supports multiple cards.
1082 Note: One miXart8 board will be represented as 4 alsa cards.
1083 See MIXART.txt for details.
1085 When the driver is compiled as a module and the hotplug firmware
1086 is supported, the firmware data is loaded via hotplug automatically.
1087 Install the necessary firmware files in alsa-firmware package.
1088 When no hotplug fw loader is available, you need to load the
1089 firmware via mixartloader utility in alsa-tools package.
1094 Module for MPU-401 UART devices.
1096 port - port number or -1 (disable)
1097 irq - IRQ number or -1 (disable)
1098 pnp - PnP detection - 0 = disable, 1 = enable (default)
1100 This module supports multiple devices and PnP.
1105 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1108 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1109 irq - IRQ # for MTPAV (7,5, default=7)
1110 hwports - number of supported hardware ports, default=8.
1112 Module supports only 1 card. This module has no enable option.
1117 Module for NeoMagic NM256AV/ZX chips
1119 playback_bufsize - max playback frame size in kB (4-128kB)
1120 capture_bufsize - max capture frame size in kB (4-128kB)
1121 force_ac97 - 0 or 1 (disabled by default)
1122 buffer_top - specify buffer top address
1123 use_cache - 0 or 1 (disabled by default)
1124 vaio_hack - alias buffer_top=0x25a800
1125 reset_workaround - enable AC97 RESET workaround for some laptops
1126 reset_workaround2 - enable extended AC97 RESET workaround for some
1129 This module supports one chip and autoprobe.
1131 The power-management is supported.
1133 Note: on some notebooks the buffer address cannot be detected
1134 automatically, or causes hang-up during initialization.
1135 In such a case, specify the buffer top address explicity via
1138 Sony F250: buffer_top=0x25a800
1139 Sony F270: buffer_top=0x272800
1140 The driver supports only ac97 codec. It's possible to force
1141 to initialize/use ac97 although it's not detected. In such a
1142 case, use force_ac97=1 option - but *NO* guarantee whether it
1145 Note: The NM256 chip can be linked internally with non-AC97
1146 codecs. This driver supports only the AC97 codec, and won't work
1147 with machines with other (most likely CS423x or OPL3SAx) chips,
1148 even though the device is detected in lspci. In such a case, try
1149 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1150 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1151 and proper hardware parameters in the case without ISA PnP.
1153 Note: some laptops need a workaround for AC97 RESET. For the
1154 known hardware like Dell Latitude LS and Sony PCG-F305, this
1155 workaround is enabled automatically. For other laptops with a
1156 hard freeze, you can try reset_workaround=1 option.
1158 Note: Dell Latitude CSx laptops have another problem regarding
1159 AC97 RESET. On these laptops, reset_workaround2 option is
1160 turned on as default. This option is worth to try if the
1161 previous reset_workaround option doesn't help.
1163 Note: This driver is really crappy. It's a porting from the
1164 OSS driver, which is a result of black-magic reverse engineering.
1165 The detection of codec will fail if the driver is loaded *after*
1166 X-server as described above. You might be able to force to load
1167 the module, but it may result in hang-up. Hence, make sure that
1168 you load this module *before* X if you encounter this kind of
1174 Module for Yamaha OPL3-SA2/SA3 sound cards.
1176 port - control port # for OPL3-SA chip (0x370)
1177 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1178 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1179 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1180 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1181 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1182 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1183 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1184 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1186 This module supports multiple cards and ISA PnP. It does not support
1187 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1189 The power-management is supported.
1191 Module snd-opti92x-ad1848
1192 -------------------------
1194 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1195 Module works with OAK Mozart cards as well.
1197 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1198 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1199 fm_port - port # for OPL3 device (0x388)
1200 irq - IRQ # for WSS chip (5,7,9,10,11)
1201 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1202 dma1 - first DMA # for WSS chip (0,1,3)
1204 This module supports only one card, autoprobe and PnP.
1206 Module snd-opti92x-cs4231
1207 -------------------------
1209 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1211 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1212 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1213 fm_port - port # for OPL3 device (0x388)
1214 irq - IRQ # for WSS chip (5,7,9,10,11)
1215 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1216 dma1 - first DMA # for WSS chip (0,1,3)
1217 dma2 - second DMA # for WSS chip (0,1,3)
1219 This module supports only one card, autoprobe and PnP.
1224 Module for sound cards based on OPTi 82c93x chips.
1226 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1227 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1228 fm_port - port # for OPL3 device (0x388)
1229 irq - IRQ # for WSS chip (5,7,9,10,11)
1230 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1231 dma1 - first DMA # for WSS chip (0,1,3)
1232 dma2 - second DMA # for WSS chip (0,1,3)
1234 This module supports only one card, autoprobe and PnP.
1239 Module for Digigram PCXHR boards
1241 This module supports multiple cards.
1243 Module snd-powermac (on ppc only)
1244 ---------------------------------
1246 Module for PowerMac, iMac and iBook on-board soundchips
1248 enable_beep - enable beep using PCM (enabled as default)
1250 Module supports autoprobe a chip.
1252 Note: the driver may have problems regarding endianess.
1254 The power-management is supported.
1256 Module snd-pxa2xx-ac97 (on arm only)
1257 ------------------------------------
1259 Module for AC97 driver for the Intel PXA2xx chip
1261 For ARM architecture only.
1263 The power-management is supported.
1268 Module for Conexant Riptide chip
1270 joystick_port - Joystick port # (default: 0x200)
1271 mpu_port - MPU401 port # (default: 0x330)
1272 opl3_port - OPL3 port # (default: 0x388)
1274 This module supports multiple cards.
1275 The driver requires the firmware loader support on kernel.
1276 You need to install the firmware file "riptide.hex" to the standard
1277 firmware path (e.g. /lib/firmware).
1282 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1283 Prodif96 and Prodif Gold) sound cards.
1285 This module supports multiple cards.
1290 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1292 This module supports multiple cards.
1297 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1299 precise_ptr - Enable precise pointer (doesn't work reliably).
1302 This module supports multiple cards.
1304 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1305 module did formerly. It will allocate the buffers in advance
1306 when any RME9652 cards are found. To make the buffer
1307 allocation sure, load snd-page-alloc module in the early
1308 stage of boot sequence. See "Early Buffer Allocation"
1311 Module snd-sa11xx-uda1341 (on arm only)
1312 ---------------------------------------
1314 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1316 Module supports only one card.
1317 Module has no enable and index options.
1319 The power-management is supported.
1324 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1328 port - port # for SB DSP chip (0x220,0x240,0x260)
1329 irq - IRQ # for SB DSP chip (5,7,9,10)
1330 dma8 - DMA # for SB DSP chip (1,3)
1332 This module supports multiple cards and autoprobe.
1334 The power-management is supported.
1336 Module snd-sb16 and snd-sbawe
1337 -----------------------------
1339 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1340 SoundBlaster AWE 32 (PnP),
1341 SoundBlaster AWE 64 PnP
1343 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1344 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1345 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1346 (snd-sbawe module only)
1347 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1348 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1349 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1350 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1351 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1352 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1354 This module supports multiple cards, autoprobe and ISA PnP.
1356 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1357 disable 16bit DMA with dma16 = -1 module parameter.
1358 Also, all Sound Blaster 16 type cards can operate in 16-bit
1359 half duplex mode through 8-bit DMA channel by disabling their
1362 The power-management is supported.
1367 Module for Aztech Sound Galaxy sound card.
1369 sbport - Port # for SB16 interface (0x220,0x240)
1370 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1371 irq - IRQ # (7,9,10,11)
1374 This module supports multiple cards.
1376 The power-management is supported.
1381 Module for ENSONIQ SoundScape PnP cards.
1383 port - Port # (PnP setup)
1384 irq - IRQ # (PnP setup)
1385 mpu_irq - MPU-401 IRQ # (PnP setup)
1386 dma - DMA # (PnP setup)
1388 This module supports multiple cards. ISA PnP must be enabled.
1389 You need sscape_ctl tool in alsa-tools package for loading
1392 Module snd-sun-amd7930 (on sparc only)
1393 --------------------------------------
1395 Module for AMD7930 sound chips found on Sparcs.
1397 This module supports multiple cards.
1399 Module snd-sun-cs4231 (on sparc only)
1400 -------------------------------------
1402 Module for CS4231 sound chips found on Sparcs.
1404 This module supports multiple cards.
1406 Module snd-sun-dbri (on sparc only)
1407 -----------------------------------
1409 Module for DBRI sound chips found on Sparcs.
1411 This module supports multiple cards.
1413 Module snd-wavefront
1414 --------------------
1416 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1418 cs4232_pcm_port - Port # for CS4232 PCM interface.
1419 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1420 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1421 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1422 use_cs4232_midi - Use CS4232 MPU-401 interface
1423 (inaccessibly located inside your computer)
1424 ics2115_port - Port # for ICS2115
1425 ics2115_irq - IRQ # for ICS2115
1426 fm_port - FM OPL-3 Port #
1427 dma1 - DMA1 # for CS4232 PCM interface.
1428 dma2 - DMA2 # for CS4232 PCM interface.
1429 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1431 This module supports multiple cards and ISA PnP.
1433 Module snd-sonicvibes
1434 ---------------------
1436 Module for S3 SonicVibes PCI sound cards.
1437 * PINE Schubert 32 PCI
1439 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1440 - SoundCard must have onboard SRAM for this.
1441 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1443 This module supports multiple cards and autoprobe.
1445 Module snd-serial-u16550
1446 ------------------------
1448 Module for UART16550A serial MIDI ports.
1450 port - port # for UART16550A chip
1451 irq - IRQ # for UART16550A chip, -1 = poll mode
1452 speed - speed in bauds (9600,19200,38400,57600,115200)
1454 base - base for divisor in bauds (57600,115200,230400,460800)
1456 outs - number of MIDI ports in a serial port (1-4)
1458 adaptor - Type of adaptor.
1459 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1460 3 = MS-124W M/B, 4 = Generic
1462 This module supports multiple cards. This module does not support autoprobe
1463 thus the main port must be specified!!! Other options are optional.
1468 Module for Trident 4DWave DX/NX sound cards.
1469 * Best Union Miss Melody 4DWave PCI
1471 * Warpspeed ONSpeed 4DWave PCI
1474 * CHIC True Sound 4Dwave
1475 * Shark Predator4D-PCI
1476 * Jaton SonicWave 4D
1478 pcm_channels - max channels (voices) reserved for PCM
1479 wavetable_size - max wavetable size in kB (4-?kb)
1481 This module supports multiple cards and autoprobe.
1483 The power-management is supported.
1485 Module snd-usb-audio
1486 --------------------
1488 Module for USB audio and USB MIDI devices.
1490 vid - Vendor ID for the device (optional)
1491 pid - Product ID for the device (optional)
1492 device_setup - Device specific magic number (optional)
1493 - Influence depends on the device
1496 This module supports multiple devices, autoprobe and hotplugging.
1498 Module snd-usb-usx2y
1499 --------------------
1501 Module for Tascam USB US-122, US-224 and US-428 devices.
1503 This module supports multiple devices, autoprobe and hotplugging.
1505 Note: you need to load the firmware via usx2yloader utility included
1506 in alsa-tools and alsa-firmware packages.
1511 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1512 8233A, 8233C, 8235, 8237 (south) bridge.
1514 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1516 joystick - Enable joystick (default off) [VIA686A/686B only]
1517 ac97_clock - AC'97 codec clock base (default 48000Hz)
1518 dxs_support - support DXS channels,
1519 0 = auto (default), 1 = enable, 2 = disable,
1520 3 = 48k only, 4 = no VRA, 5 = enable any sample
1521 rate and different sample rates on different
1523 [VIA8233/C, 8235, 8237 only]
1524 ac97_quirk - AC'97 workaround for strange hardware
1525 See "AC97 Quirk Option" section below.
1527 This module supports one chip and autoprobe.
1529 Note: on some SMP motherboards like MSI 694D the interrupts might
1530 not be generated properly. In such a case, please try to
1531 set the SMP (or MPS) version on BIOS to 1.1 instead of
1532 default value 1.4. Then the interrupt number will be
1533 assigned under 15. You might also upgrade your BIOS.
1535 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1536 channels as the first PCM. On these channels, up to 4
1537 streams can be played at the same time, and the controller
1538 can perform sample rate conversion with separate rates for
1540 As default (dxs_support = 0), 48k fixed rate is chosen
1541 except for the known devices since the output is often
1542 noisy except for 48k on some mother boards due to the
1544 Please try once dxs_support=5 and if it works on other
1545 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1546 know the PCI subsystem vendor/device id's (output of
1548 If dxs_support=5 does not work, try dxs_support=4; if it
1549 doesn't work too, try dxs_support=1. (dxs_support=1 is
1550 usually for old motherboards. The correct implemented
1551 board should work with 4 or 5.) If it still doesn't
1552 work and the default setting is ok, dxs_support=3 is the
1553 right choice. If the default setting doesn't work at all,
1554 try dxs_support=2 to disable the DXS channels.
1555 In any cases, please let us know the result and the
1556 subsystem vendor/device ids. See "Links and Addresses"
1559 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1560 additionally. The mpu_port option is for VIA686 chips only.
1562 The power-management is supported.
1564 Module snd-via82xx-modem
1565 ------------------------
1567 Module for VIA82xx AC97 modem
1569 ac97_clock - AC'97 codec clock base (default 48000Hz)
1571 This module supports one card and autoprobe.
1573 Note: The default index value of this module is -2, i.e. the first
1576 The power-management is supported.
1581 Module for virtual rawmidi devices.
1582 This module creates virtual rawmidi devices which communicate
1583 to the corresponding ALSA sequencer ports.
1585 midi_devs - MIDI devices # (1-4, default=4)
1587 This module supports multiple cards.
1592 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1594 mic - Enable Microphone on V222 Mic (NYI)
1595 ibl - Capture IBL size. (default = 0, minimum size)
1597 This module supports multiple cards.
1599 When the driver is compiled as a module and the hotplug firmware
1600 is supported, the firmware data is loaded via hotplug automatically.
1601 Install the necessary firmware files in alsa-firmware package.
1602 When no hotplug fw loader is available, you need to load the
1603 firmware via vxloader utility in alsa-tools package. To invoke
1604 vxloader automatically, add the following to /etc/modprobe.conf
1606 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1608 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1609 /etc/modules.conf, instead.)
1610 IBL size defines the interrupts period for PCM. The smaller size
1611 gives smaller latency but leads to more CPU consumption, too.
1612 The size is usually aligned to 126. As default (=0), the smallest
1613 size is chosen. The possible IBL values can be found in
1614 /proc/asound/cardX/vx-status proc file.
1616 The power-management is supported.
1621 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1623 ibl - Capture IBL size. (default = 0, minimum size)
1625 This module supports multiple cards. The module is compiled only when
1626 PCMCIA is supported on kernel.
1628 With the older 2.6.x kernel, to activate the driver via the card
1629 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1630 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1631 longer require a config file.
1633 When the driver is compiled as a module and the hotplug firmware
1634 is supported, the firmware data is loaded via hotplug automatically.
1635 Install the necessary firmware files in alsa-firmware package.
1636 When no hotplug fw loader is available, you need to load the
1637 firmware via vxloader utility in alsa-tools package.
1639 About capture IBL, see the description of snd-vx222 module.
1641 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
1644 The power-management is supported.
1649 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1651 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1652 1 (auto-detect for YMF744/754 only)
1653 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1654 1 (auto-detect for YMF744/754 only)
1655 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1657 rear_switch - enable shared rear/line-in switch (bool)
1659 This module supports autoprobe and multiple chips.
1661 The power-management is supported.
1663 Module snd-pdaudiocf
1664 --------------------
1666 Module for Sound Core PDAudioCF sound card.
1668 The power-management is supported.
1674 The ac97_quirk option is used to enable/override the workaround for
1675 specific devices on drivers for on-board AC'97 controllers like
1676 snd-intel8x0. Some hardware have swapped output pins between Master
1677 and Headphone, or Surround (thanks to confusion of AC'97
1678 specifications from version to version :-)
1680 The driver provides the auto-detection of known problematic devices,
1681 but some might be unknown or wrongly detected. In such a case, pass
1682 the proper value with this option.
1684 The following strings are accepted:
1685 - default Don't override the default setting
1686 - none Disable the quirk
1687 - hp_only Bind Master and Headphone controls as a single control
1688 - swap_hp Swap headphone and master controls
1689 - swap_surround Swap master and surround controls
1690 - ad_sharing For AD1985, turn on OMS bit and use headphone
1691 - alc_jack For ALC65x, turn on the jack sense mode
1692 - inv_eapd Inverted EAPD implementation
1693 - mute_led Bind EAPD bit for turning on/off mute LED
1695 For backward compatibility, the corresponding integer value -1, 0,
1696 ... are accepted, too.
1698 For example, if "Master" volume control has no effect on your device
1699 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1702 Configuring Non-ISAPNP Cards
1703 ============================
1705 When the kernel is configured with ISA-PnP support, the modules
1706 supporting the isapnp cards will have module options "isapnp".
1707 If this option is set, *only* the ISA-PnP devices will be probed.
1708 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1709 together with the proper i/o and irq configuration.
1711 When the kernel is configured without ISA-PnP support, isapnp option
1712 will be not built in.
1715 Module Autoloading Support
1716 ==========================
1718 The ALSA drivers can be loaded automatically on demand by defining
1719 module aliases. The string 'snd-card-%1' is requested for ALSA native
1720 devices where %i is sound card number from zero to seven.
1722 To auto-load an ALSA driver for OSS services, define the string
1723 'sound-slot-%i' where %i means the slot number for OSS, which
1724 corresponds to the card index of ALSA. Usually, define this
1725 as the same card module.
1727 An example configuration for a single emu10k1 card is like below:
1728 ----- /etc/modprobe.conf
1729 alias snd-card-0 snd-emu10k1
1730 alias sound-slot-0 snd-emu10k1
1731 ----- /etc/modprobe.conf
1733 The available number of auto-loaded sound cards depends on the module
1734 option "cards_limit" of snd module. As default it's set to 1.
1735 To enable the auto-loading of multiple cards, specify the number of
1736 sound cards in that option.
1738 When multiple cards are available, it'd better to specify the index
1739 number for each card via module option, too, so that the order of
1740 cards is kept consistent.
1742 An example configuration for two sound cards is like below:
1744 ----- /etc/modprobe.conf
1746 options snd cards_limit=2
1747 alias snd-card-0 snd-interwave
1748 alias snd-card-1 snd-ens1371
1749 options snd-interwave index=0
1750 options snd-ens1371 index=1
1752 alias sound-slot-0 snd-interwave
1753 alias sound-slot-1 snd-ens1371
1754 ----- /etc/moprobe.conf
1756 In this example, the interwave card is always loaded as the first card
1757 (index 0) and ens1371 as the second (index 1).
1760 ALSA PCM devices to OSS devices mapping
1761 =======================================
1763 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1764 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1765 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1766 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1767 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1768 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1769 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1770 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1771 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1773 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1774 sound card number and second means device number. The ALSA devices
1775 have either 'c' or 'p' suffix indicating the direction, capture and
1776 playback, respectively.
1778 Please note that the device mapping above may be varied via the module
1779 options of snd-pcm-oss module.
1785 The ALSA driver fully supports the devfs extension.
1786 You should add lines below to your devfsd.conf file:
1788 LOOKUP snd MODLOAD ACTION snd
1789 REGISTER ^sound/.* PERMISSIONS root.audio 660
1790 REGISTER ^snd/.* PERMISSIONS root.audio 660
1792 Warning: These lines assume that you have the audio group in your system.
1793 Otherwise replace audio word with another group name (root for
1797 Proc interfaces (/proc/asound)
1798 ==============================
1800 /proc/asound/card#/pcm#[cp]/oss
1801 -------------------------------
1802 String "erase" - erase all additional informations about OSS applications
1803 String "<app_name> <fragments> <fragment_size> [<options>]"
1805 <app_name> - name of application with (higher priority) or without path
1806 <fragments> - number of fragments or zero if auto
1807 <fragment_size> - size of fragment in bytes or zero if auto
1808 <options> - optional parameters
1809 - disable the application tries to open a pcm device for
1810 this channel but does not want to use it.
1811 (Cause a bug or mmap needs)
1812 It's good for Quake etc...
1813 - direct don't use plugins
1814 - block force block mode (rvplayer)
1815 - non-block force non-block mode
1816 - whole-frag write only whole fragments (optimization affecting
1818 - no-silence do not fill silence ahead to avoid clicks
1819 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1820 instead of filled blocks
1822 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1823 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1824 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1827 Early Buffer Allocation
1828 =======================
1830 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1831 sometimes it's too late to find such spaces when the driver module is
1832 actually loaded due to memory fragmentation. You can pre-allocate the
1833 PCM buffers by loading snd-page-alloc module and write commands to its
1834 proc file in prior, for example, in the early boot stage like
1835 /etc/init.d/*.local scripts.
1837 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1838 usage of page allocation. In writing, you can send the following
1839 commands to the snd-page-alloc driver:
1841 - add VENDOR DEVICE MASK SIZE BUFFERS
1843 VENDOR and DEVICE are PCI vendor and device IDs. They take
1844 integer numbers (0x prefix is needed for the hex).
1845 MASK is the PCI DMA mask. Pass 0 if not restricted.
1846 SIZE is the size of each buffer to allocate. You can pass
1847 k and m suffix for KB and MB. The max number is 16MB.
1848 BUFFERS is the number of buffers to allocate. It must be greater
1849 than 0. The max number is 4.
1853 This will erase the all pre-allocated buffers which are not in
1860 ALSA project homepage
1861 http://www.alsa-project.org
1863 ALSA Bug Tracking System
1864 https://bugtrack.alsa-project.org/bugs/
1867 mailto:alsa-devel@lists.sourceforge.net
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