Am 21.08.2011 12:24, schrieb Leonardo Guilherme:
2011/8/21 Maximilian Bräutigam<max.braeuti...@googlemail.com>:
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




Have you tried running alsaconf? what happens when you try alsamixer?
I tend to hate pulseaudio. I fail to see its purpose, the only time i
tried it gave me a big headache. My (totally biased and personal
without any techincal background) advice is to stay clear of
pulseaudio.


Hi Leonardo,

i tried it of course without pulse audio in advance, but e.g. totem and vlc were using the wrong "standard" device and emerging world with pulseaudio use flag makes totem and vlc use the right device ... my only problems are chromium and ff ... and probably some other apps, that I didn't test so far.

Kind regards,
Max

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