On Sat, Jul 21, 2012 at 06:04:59PM +0200, Clemens Ladisch wrote:
> Joe Nahmias wrote:
> > I have my custom HTPC hooked up to my receiver using HDMI for both audio
> > and video. Through some trial and error, I managed to find the correct
> > invocation to give me 5.1-channel sound using speaker-test:
> >
> > $ speaker-test -c 6 -D hdmi:0,1 -t wav
> >
> > I would like to know how to configure alsa (? using /etc/asound.conf ?) so
> > that all apps use the correct device by default
>
> Try these entries:
>
> defaults {
> ctl.card PCH
> pcm.card PCH
> pcm.device 7
> }
>
> > with a 5.1 speaker setup.
Hmm, that doesn't seem to work:
$ cat /etc/asound.conf
defaults {
ctl.card PCH
pcm.card PCH
pcm.device 7
}
$ speaker-test -c 6 -t wav
speaker-test 1.0.25
Playback device is default
Stream parameters are 48000Hz, S16_LE, 6 channels
WAV file(s)
ALSA lib conf.c:1017:(parse_value) card is not a string
ALSA lib conf.c:1686:(snd_config_load1) _toplevel_:3:5:Unexpected char
ALSA lib conf.c:3406:(config_file_open) /etc/asound.conf may be old or
corrupted: consider to remove or fix it
Segmentation fault
$
However, if I try this:
$ cat /etc/asound.conf
defaults {
ctl.card 0
pcm.card 0
pcm.device 7
}
$ speaker-test -c 6 -t wav
speaker-test 1.0.25
Playback device is default
Stream parameters are 48000Hz, S16_LE, 6 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 8192
Period size range from 1024 to 1024
Using max buffer size 8192
Periods = 4
was set period_size = 1024
was set buffer_size = 8192
0 - Front Left
4 - Center
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
It almost works... However, I only hear sound from the two front speakers
-- not from all six -- the other four just give me silence.
> Usually, you should configure the receiver to expand audio data to 5.1
> channels.
Okay, that makes sense, assuming I can get the above to work.
> Regards,
> Clemens
--Joe
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