http://freedesktop.org/software/pulseaudio/doxygen/volume.html
Volumes commonly span between muted (0%), and normal (100%). It is possible to set volumes to higher than 100%, but clipping might occur. if pulseaudio change volume control to 0% when muted, it won't restore the original volume and unmute the driver only mute by playback switch and keep the volume unchanged, you still get the original volume when unmute Default Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Default Amp-Out caps: ofs=0x7f, nsteps=0x7f, stepsize=0x02, mute=1 if volume is at 0x70, mute change the value to 0xf0, unmute change the value back to 0x70 if the driver change the scale to mute at min, mute by set the value to 0, you lost the original volume when unmute -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1234814 Title: [HP EliteBook 8760w, IDT 92HD81B1X5] automute when plugging in headphones mutes master channel Status in “alsa-driver” package in Ubuntu: New Bug description: I am running kubuntu 13.10 on a hp 8760w laptop lspci identifies the soundcard as 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) plugging in headphones causes the Master channel to drop to zero rather than the PCM channel, also when a new sound source connects to pulse-audio the pcm and master volumes switch. (I am using the kde mixer applet - to check the channels) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234814/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
