[alsa-devel] Acer Aspire 8920g / snd-hda-intel / ALC889

[Takashi Iwai]

At Mon, 21 Apr 2008 13:02:40 +0100,
Andy Green wrote:
> 
> Hi folks -
> 
> I have a new 8920g on Fedora development running 2.6.25 which has
> 
> $ cat /proc/asound/version
> Advanced Linux Sound Architecture Driver Version 1.0.16rc2 (Thu Jan 31 
> 16:40:16 2008 UTC).
> 
> I get a decent looking set of alsa things in /proc/asound
> 
> $ cat /proc/asound/cards
>   0 [Intel          ]: HDA-Intel - HDA Intel
>                        HDA Intel at 0xfc300000 irq 22
> 
> and dmesg says that model=acer was selected reasonably enough.

First of all, do you need to pass model=acer at all?

> I can play audio down the logical sound devices, including cat 
> /dev/urandom > /dev/dsp and the interrupt count goes up in /proc/interrupts.
> 
> Alsamixer shows a bunch of things and I twiddled them all to no avail. 
> There has never been even a click from the speakers or headphone jack on 
> this machine.
> 
> At least three funnies on this machine:
> 
> 1) It is confused if it has ALC889 or ALC883 in there
> 
> $ grep ALC /proc/asound/* -R
> /proc/asound/card0/codec#0:Codec: Realtek ALC889    <==== 889
> /proc/asound/card0/pcm2c/sub0/info:id: ALC883 Analog  <=== 883...

This doesn't matter.  ALC889 is compatible with ALC883, and the driver
uses the same string inside.

> 2) from dmesg
> 
> ALSA sound/pci/hda/hda_intel.c:1810: chipset global capabilities = 0x4401
> ALSA sound/pci/hda/hda_intel.c:749: codec_mask = 0x3
> ALSA sound/pci/hda/hda_codec.c:2211: hda_codec: model 'acer' is selected
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Headphone 
> Playback Volume, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker Playback 
> Volume, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Mono Playback 
> Volume, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Line-Out Playback 
> Volume, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker Playback 
> Switch, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Mono Playback 
> Switch, skipped
> ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave IEC958 Playback 
> Switch, skipped
> 
> 3) there is a funny embedded capacitive volume control thing on this 
> device, whether it gates output by itself or is just a bunch of special 
> keyboard keys, I dunno.
> 
> Any ideas, more information needed?

alsa-info.sh (found in www.alsa-project.org debug page) would give
more detailed debug information.  Please show that output.


thanks,

Takashi