2010/8/26 Eric Holstege <eric_holstege@xxxxxxxxx> > It appears that when I have a headphone plugged in, the speakers are > automatically disabled and the output sound is sent to the headphone. > > However, I want to explicitly control (e.g. via a script or commandline > - not a GUI) whether the sound from an (arbitrary) application is going > to the speakers or to the headphone even when the headphone is plugged in. > (When I say "arbitrary application" that means I can't alter the code of > the application itself). > > Is this possible? > > (I have heard that ALSA mutes the speakers when it detects plugged-in > headphones. Is switching between them as simple as using e.g. amixer(1) > to unmute the speakers and mute the headphones and vice versa, or is > there more to it.) > > > it is really hardware dependent Which on-board sound driver are you using ? auto mute is a specific feature for notebook in old day For the desktop, the front panel audio connector of the AC97' chassis and HDA chassis http://www.intel.com/support/motherboards/desktop/sb/cs-015851.htm For some HDA codec, the headphone (front panel green jack) can be used indpendent of the rear panel jacks on desktop _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
