Le Mon, 21 Dec 2009 16:25:59 +0200,
Iwan Ferreira <iwanferreira@xxxxxxxxx> a écrit :
> >
> > Hi!
> >
> > I'm trying to add a softvol control to act as a master control for all the
> > channels on my sound card. I have a M-Audio Revolution 7.1 soundcard.
> > ALSAMIXER shows PCM, center, LFE, rear and side mixers, but no master mixer
> > to control all the channels. I'm currently running Ubuntu 9.04 which uses
> > the Pulse Audio sound server by default.
> >
Same problem here with a M-Audio Audiophile 192, no master control, only a PCM
control.
Some programs get confused with it because they want to talk to a Master
control. I don't use pulseaudio so I cannot help you directly.
That said, some programs (I guess the gnome ones) are using it as default sound
server. I configured my system to run jack by default. My .asoundrc is as
follow:
# convert alsa API over jack API
# use it with
# % aplay foo.wav
# use this as default
pcm.!default {
type plug
slave { pcm "jack" }
}
# pcm type jack
pcm.jackplug{
type plug
slave {pcm "jack"}
}
pcm.jack {
type jack
playback_ports {
0 alsa_pcm:playback_1
1 alsa_pcm:playback_2
}
capture_ports {
0 alsa_pcm:capture_1
1 alsa_pcm:capture_2
}
}
# oss will use the alsa to jack API by default
# test it with
# % aoss mpg123 some.mp3
pcm.dsp pcm.!default
After stating jackd with qjackctl, all the alsa and oss programs are routed to
jack. I am not sure if the oss part of my .asoundrc is still needed with recent
alsa and jack versions. Even flash+firefox is working fine with jack without
to have to run it with "aoss firefox", "firefox" is enough now, it changed a
few months ago after a system update. But maybe that is flash that have been
improved, I don't know for sure.
The programs using pulseaudio are working with this config and the default
pulseaudio config of my distribution (gentoo). I can see sometime in htop than
pulseaudio is running.
Dominique
> > In my pulseaudio /etc/pulse/default.pa file I added the following:
> > load-module module-alsa-sink device="surround71" channels=8 sink_name=sur71
> > This allowed me to have output on all the channels from all the players I
> > use (Rhythmbox, Mplayer...) so I have no ALSA config to upmix stereo or 5.1
> > to 7.1.
> >
> > Im my .asoundrc file in my home directory I put the following:
> > pcm.!default {
> >
> > type plug
> >
> > playback.pcm "softvol"
> >
> > }
> > pcm.!surround71 {
> >
> > type plug
> >
> > slave.pcm "softvol"
> >
> > }
> > pcm.softvol {
> >
> > type softvol
> >
> > slave.pcm "hw:0,0"
> >
> > control {
> >
> > name "SoftMaster"
> >
> > card 0
> >
> > }
> >
> > }
> >
> > This adds the "SoftMaster" mixer control to the ALSA mixer, but it is not
> > working as expected. In both Mplayer and Rythmbox the movie/music is started
> > but only plays for a few seconds and then stops. I also noticed that the
> > timer in both these applications do not start, it stays at 00:00. If I
> > change the volume on the SoftMaster mixer while the sound is playing it does
> > work on all channels.
> >
> > If I test the softvol mixer with speaker-test it works fine. If I remove
> > the pcm.!surround71 from the asoundrc file everything works as before and
> > the softvol mixer does nothing.
> >
> > What am I missing? Can anyone help me with this?
> >
> > Thank you in advance!
> > Iwan
> >
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