Arch Linux

ubuntubang

Member

Registered: 2012-03-28

Posts: 17

Sound issues after kernel update to 3.4.2 HDA Intel SigmaTel STAC9200

Hi all,
after upgrading from kernel 3.3.8.-1 to 3.4.2.-2 my soundcard isn't working properly.
When I'm trying to chance the volume using amixer, the output is the following (sound volume does *not* change)

$amixer set Master 2dB+ unmute
Simple mixer control 'Master',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]

With 3.3.8 the output looks quite different (while the volume changes like it should be)

$ amixer set Master 2dB+ unmute
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 9 [29%] [-33.00dB] [on]
  Front Right: Playback 9 [29%] [-33.00dB] [on]

It seems to be with both kernels the same modules are loaded.

 (3.3.8)
$ lsmod | grep '^snd' | column -t
snd_hda_codec_idt  48414  1
snd_hda_intel      20112  1
snd_hda_codec      79405  2  snd_hda_intel,snd_hda_codec_idt
snd_pcm            60499  2  snd_hda_codec,snd_hda_intel
snd_page_alloc     5901   2  snd_pcm,snd_hda_intel
snd_hwdep          4970   1  snd_hda_codec
snd_timer          15158  1  snd_pcm
snd                45013  8  snd_timer,snd_hwdep,snd_pcm,snd_hda_codec,snd_hda_intel,snd_hda_codec_idt

(3.4.2)
$ lsmod | grep '^snd' | column -t
snd_hda_codec_idt  47736  1
snd_hda_intel      20208  5
snd_hda_codec      80701  2   snd_hda_codec_idt,snd_hda_intel
snd_pcm            61237  4   snd_hda_codec,snd_hda_intel
snd_page_alloc     5901   2   snd_pcm,snd_hda_intel
snd_hwdep          4746   1   snd_hda_codec
snd_timer          14902  3   snd_pcm
snd                44426  12  snd_hwdep,snd_timer,snd_hda_codec_idt,snd_pcm,snd_hda_codec,snd_hda_intel

Some further infos...

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: STAC92xx Digital [STAC92xx Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ cat /proc/asound/cards 
 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xefebc000 irq 42

$ head -n 1 /proc/asound/card0/codec*
==> /proc/asound/card0/codec#0 <==
Codec: SigmaTel STAC9200

Cyphex

Member

From: Germany

Registered: 2011-08-26

Posts: 18

Re: Sound issues after kernel update to 3.4.2 HDA Intel SigmaTel STAC9200

Same problem here. It seems that there is no master volume control anymore. A mute switch is still there (according to alsamixer), but not working (i.e. muting the master does not mute the actual sound playback). Unfortunately, I don't have a solution, and I also haven't found any other sites/topics/whatever on the issue (yet?).
There is, of course, the simple workaround to use the PCM channel to control volume, but I guess that's already occured to you

So, I can't really help here, beyond confirming the issue. But if anyone were able to, it would be highly appreciated.

ubuntubang

Member

Registered: 2012-03-28

Posts: 17

Re: Sound issues after kernel update to 3.4.2 HDA Intel SigmaTel STAC9200

yes, the master volume bar in alsamixer is still present but the volume level is 0 and its not possible to change this. And as you said muting the master channel does not mute actual sound playback.
Switching back to linux 3.3.8 and all works fine.

I'm trying to specify the model in /etc/modprobe.d/modprobe.conf listed here under Stac9200
http://kernel.org/doc/Documentation/sou … Models.txt
So far I have tried:
#options snd-hda-intel model=dell-m25
#options snd-hda-intel model=dell-m6
#options snd-hda-intel model=3stack
#options snd-hda-intel model=dell-m21
options snd-hda-intel model=dell-m26

No changes with the first 4. With modell=dell-m26, alsamixer shows only the PCM channel.
By the way, I'm using the Dell Inspiron 6400 Laptop.

ubuntubang

Member

Registered: 2012-03-28

Posts: 17

Re: Sound issues after kernel update to 3.4.2 HDA Intel SigmaTel STAC9200

using "options snd-hda-intel model=ref": the Master Channel bar is visible and I can change its volume, but this has no effect of the actual sound playback

Last edited by ubuntubang (2012-06-19 23:05:30)

ubuntubang

Member

Registered: 2012-03-28

Posts: 17

Re: Sound issues after kernel update to 3.4.2 HDA Intel SigmaTel STAC9200

I have been using the lts kernel where the issue does not exists. I tried kernel 3.5.0 - no master volume. Yesterday I tried kernel 3.5.6-1 - no issues any more