2010/8/28 David Henningsson <david.henningsson@xxxxxxxxxxxxx> > 2010-08-27 17:43, Clemens Ladisch skrev: > > David Henningsson wrote: > >> So I've discovered that my sound card has a "PCM Playback Volume" > >> control, but changing that control does not alter the volume. > >> > >> Interestingly enough, this control does not come from the HDA parser, it > >> is added by alsactl at boot time...! > > > > This control was created by the software volume plugin. When not using > > this plugin, the control does not have any effect. > > > > To get rid of it, delete its entry from /etc/asound.state. > > Hmm, I wonder if this is an Ubuntu-specific bug then? Because when I run > Maverick (the upcoming Ubuntu release) from a Live-CD, the "PCM Playback > Volume" control is still there (and there is no asound.state, neither in > /etc or in /var/lib/alsa). > When I use the plughw interface, the "PCM Playback Volume" does not > affect volume output. Should I use another device string to test the > softvol plugin, to see if it's there or not? > The softvol plugin it is defined in "front" device in /usr/share/alsa/cards/HDA-Intel.conf reason is some HDA codec does not has any hardware volume control (analog) this user-defined control only effective when the application use "front" device it is a bug in PA server to open "front" device for playback and capture it is not easy to remove the control unless you know the trick shutdown without alsactl store _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
