[alsa-devel] ECS K7VTA3: Mixer channels reversed

Takashi Iwai tiwai at suse.de
Wed Jun 25 17:49:45 CEST 2008

At Mon, 23 Jun 2008 16:15:05 -0700,
walt wrote:
> Hi list,
> I just replaced a mobo with an ECS K7VTA3 and I find that the
> Headphones control is now controlling the master channel and the
> Master control does nothing.
> I tried 'modprobe via82xx ac97_quirk=hp_only' but that makes the
> audio device unusable (although alsamixer still seems happy to set
> the individual channels).

You mean that you don't hear any outputs?  Which I/O (HP out,
line-out, etc) are you testing?

>  Any other quirks I should try?

Usually hp_only is the right choice.  Check alsa-info.sh script
outputs for both cases with and without ac97_quirk option.


> Here is some hardware info:
> ALSA sound/pci/via82xx.c:2409: via82xx: DXS white list for ESC K8 found
> 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
>          Subsystem: Elitegroup Computer Systems Unknown device 1841
>          Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Interrupt: pin C routed to IRQ 5
>          Region 0: I/O ports at dc00 [size=256]
>          Capabilities: [c0] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>          Kernel driver in use: VIA 82xx Audio
>          Kernel modules: snd-via82xx
> I'm running Linus' git kernel, current as of today, and alsa 1.0.16.
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