it is strange that the virtual master playback has mute at min volume and master playback switch at the same time
-99999.dB mean -inf dB which is equalivent to the mute switch the independent mute switch allow you to mute , and keep the volume unchanged at unmuute but mute at min volume mean no independent mute switch, you lost the volume when mute by setting volume to min , control.22 { iface MIXER name 'Master Playback Volume' value 110 comment { access 'read write' type INTEGER count 1 range '0 - 127' dbmin -9999999 dbmax 0 dbvalue.0 -1275 } } control.23 { iface MIXER name 'Master Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234814 Title: [HP EliteBook 8760w, IDT 92HD81B1X5] automute when plugging in headphones mutes master channel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs