Sound problem with P7H55 MoBo Intel IbexPeak HDMI aplay versus alsamixer -ALC892

[Lev Olshvang]

Hi Oleg,

Thank you for a tips

I  tried to  follow t your tips  with no result.

First, kernel documentation HD-AUDIO-models.txt is not up to date because
kernel 2.6.36 knows this ALC892 model. (/sound/pci/hda/patch_realtek.c)

But all my attempts to select model as modprobe option for snd_hda_intel 
fiailed, and the delegating to bios did not help.

So I do not have sound in 2.6.36 and even in 2.6.37-rc6 - no sound at ALL !



On 12/16/2010 03:56 PM, Oleg Goldshmidt wrote:
> On Thu, Dec 16, 2010 at 11:01 AM, Lev Olshvang<lolshva at 012.net.il>  wrote:
>> Hi,
>>
>> My system  Asus P7HP55M Pro board +i3 530 processor running Ubuntu 10.04, 10.10
>>
>> Board had HDMI port to output  video and audio.
>> Video is OK,  cabel is ok because it is HDMI 1.4 (suppors audio )
>>
>> I have issues with sound :
>> alsamixer under the kernel 2.6.32.26  shows only line in, mic and SPDIF output
>> aplay shows hdmi subdevice
> Sanity check: try different mixer (starting with alsamixer) and volume
> control applications and see if there are any controls missing from
> the GUI (usually somewhere under Preferences) and volume set to 0.
>
> In the past I found that something like gnome-control-volume or
> gst-mixer could be used to switch the right channel on, even though I
> used KDE. I have no idea why. In my experience the issue was typically
> microphone not working for Skype and such.
>
I have a lot of controls: line, headphone,  front, rear, surround, 
SPDIF1, SPDIIF2, ...

-indeed the board has it.
I expected to see some control labeled HDMI, but may be I am wrong
>> I migrated to Ubuntu 10.10 to have a latest alsa version . Now alsamixer thinks it works with Intel IbexPeak HDMI chip, sound from line out gone.
> Not only HDMI this time?
>
>> I put a custom kernel (vanilla 2.6.36.2) hoping for the best but
>> still no sound.
>>
>> aplay -l
>> **** List of PLAYBACK Hardware Devices ****
>> card 0: Intel [HDA Intel], device 0: ALC892 Analog [ALC892 Analog]
> Hmm... I have a 2.6.33 kernel lying around on my work laptop, and I
> don't see ALC892 in Documentation/sound/alsa/HD-Audio-Models.txt. I
> don't know if it is significant, nor do I know whether, say,
> ALC882/883/885/888/889 is a good substitute. It probably is, and in
> any case I understand that you have sound, just not through HDMI. This
> probably means that what follows is not the solution, but if you have
> no other ideas you might want to try your options.
>
> Check your /etc/modprobe.d/alsa-base.conf (or whatever the Ubuntu
> equivalent is) against "lspci | grep Audio" to see if the model
> specified looks right. If you decide to play with the model then you
> may try the following:
>
> 1) choose the default "auto" model, in this case the kernel relies on
> the BIOS, and this means that the sound device should be enabled in
> the BIOS - check that.
  I did it
> 2) disable the sound card in the BIOS, boot, choose this or that model
> that looks relevant from the HD-Audio-Models.txt list, and reload the
> module/modules.
>
I tried, but no matter what I wrote in alsa-base.conf I got no sound

> Just some random ideas...
>
> --
> Oleg Goldshmidt | oleg at goldshmidt.org
>