[pulseaudio-discuss] Moving speakers around using AC3

Aurelien Bompard gauret at free.fr
Sun Nov 29 03:18:34 PST 2009


> Try adding a ctl.upmixer device as a slave of pcm.default. Something
> that pulse can actually control the volume of. I think that might help,
> udev has nothing to do with that.

I added these lines to my .asoundrc:
ctl.atdesk {
   type hw
   card 0
}
(the pseudo-device is actually called "atdesk", not "upmixer", I made a 
mistake earlier)
I still get the same message in syslog:
---------------------------------------------------------------------------
(alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_START failed                                                                  
module.c: Loaded "module-alsa-sink" (index: #18; argument: "sink_name=atdesk 
device=atdesk").
client.c: Freed 2 "UNIX socket client"                                                                            
alsa-sink.c: Assertion 'err != -11' failed at modules/alsa/alsa-sink.c:395, 
function try_recover(). Aborting.
---------------------------------------------------------------------------

When I play a movie with "mplayer -ao alsa:device=atdesk movie.avi" I get 
this message :
alsa-lib: pcm_hw.c:607:(snd_pcm_hw_start) SNDRV_PCM_IOCTL_START failed: File 
descriptor in bad state
but the sound is allright. Maybe this has something to do with it ?

I'm glad to hear that udev autodetection is compatible with manually added 
devices though, that's excellent news :)

Thanks for your help Michał.

Aurélien
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