Re: [gentoo-user] ff & chromium trapped in deafness or how to configure ALSA correctly

["Maximilian Bräutigam" <max.braeutigam@googlemail.com>]

Am 21.08.2011 12:57, schrieb Volker Armin Hemmann:
> Am Sonntag 21 August 2011, 04:48:49 schrieb Dale:
>> Maximilian Bräutigam wrote:
>>> Hello all,
>>>
>>> I recently bought a Zotac Barebone ZBOX HD-AD02 AMD E-350 and installed
>>> Gentoo on it, what is working more or less very well except the sound. I
>>> did everything according to gentoo and gentoowiki docs, I installed (due
>>> to laziness) a gentoo-sources kernel with genkernel and Sabayon linux
>>> standard configuration, and I am using pulseaudio, but when I launch
>>> firefox or chromium from console and play some sounds, I get lots of
>>> these error messages:
>>>
>>> "ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave"
>>>
>>> I already googled for it but didn't find something helpful. The Zbox has
>>> a HDMI and a standard device:
>>>
>>> # lspci -v | grep -i audio
>>> 00:01.1 Audio device: ATI Technologies Inc Device 1314
>>> 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev
>>> 40)
>>>
>>> # cat /proc/asound/cards
>>>
>>>    0 [Generic        ]: HDA-Intel - HD-Audio Generic
>>>
>>>                         HD-Audio Generic at
>>>                         0xfeb44000 irq 40
>>>
>>>    1 [SB             ]: HDA-Intel - HDA ATI SB
>>>
>>>                         HDA ATI SB at 0xfeb40000
>>>                         irq 16
>>>
>>> You can find the complete alsa-info output at
>>> http://paste.pocoo.org/show/461744/
>>>
>>> For me, the interesting part is this section:
>>>
>>> **** List of PLAYBACK Hardware Devices ****
>>> card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
>>>
>>>     Subdevices: 1/1
>>>     Subdevice #0: subdevice #0
>>>
>>> card 1: SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog]
>>>
>>>     Subdevices: 1/1
>>>     Subdevice #0: subdevice #0
>>>
>>> card 1: SB [HDA ATI SB], device 1: ALC892 Digital [ALC892 Digital]
>>>
>>>     Subdevices: 1/1
>>>     Subdevice #0: subdevice #0
>>>
>>> Is is possible that ff and chromium are sending data to HDMI since it is
>>> card 0? If you think, it would be helpful to disable card 0 or change
>>> the order, please tell me how to do it?
>>>
>>> I highly appreciate all kinds of help!
>>>
>>> Kind regards,
>>> der Max
>>
>> A silly question for a common problem.  You did unmute the volume
>> right?  The default is to have everything muted so it is very common for
>> folks to forget that little but important detail.
>>
>> Also, on one of my rigs, I had to unmute with both Kimix and alsamixer.
>>
>> Just a thought.  I've done this myself.
>
> and don't forget to mute spdif optical raw
>
> and try without pulseaudio first.
>
>>
>> Dale
>>
>> :-)  :-)

Hi Dale and Volker,

I tried it without pulseaudio first and, Dale, my card is unmuted. ;) 
Totem and vlc are working without any problems but ff and chromium 
aren't able to produce sound - and it is somehow related to the error 
message above.

But Volker, I highly appreciate the tip with the spdif and I'll try that.

Thank you very much.

Kind regards,
Max