I tested this by upstream kernel 4.0.0-040000rc5-lowlatency, where there is "Line Out" mixer in ALSA for the (second) analog output.
When I choose "Speakers (unavailable)" port in pavucontrol, Headphone level is raised to dB gain 0 (equals 89%) and the port level controls Master volume and Speaker volume (in ALSA). By the way, why does it read "(unavailable)" even if it is available and playing and Auto-Mute Mode is set to Disabled? The text changes to "Speakers", if I unplug headphones. When I choose "Analog Output" port, Speaker volume sets to 0%, though Speaker unmutes, Headphone sets to dB gain 0 (equals 89%), and the port level controls only Master volume. When I choose "Headphones (plugged in)" port, Speaker volume is set to 0%, Speaker mutes, and adjusting the port level controls Master volume and Headphone volume. Why isn't it just so that Speakers port controls Speaker in ALSA and does not change others, Analog Output port controls only Line Out in ALSA and does not change others, and Headphones port controls only Headphone in ALSA and does not change others? pavucontrol should have a separate mixer for Master volume, and the volume control in Indicator Plugin should control just that. Besides muting a port should only mute a respective mixer in ALSA. It is annoying that muting Headphone in alsamixer mutes Master and sometimes Speaker, too, (and thereafter unmuting Headphone in alsamixer unmutes only Headphone, but Master remains muted.) As for PCM volume, I don't know if pavucontrol should have specific access for it. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1436269 Title: When you select Analog Output or Speakers as port in Output Devices tab of pavucontrol, headphone levels are raised Status in pulseaudio package in Ubuntu: Incomplete Bug description: Please note, that Line out = analog output port is controlled by ALSA mixer track called PCM, whereas there should be a separate mixer track for it; see bug Bug #1433568 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: pulseaudio 1:4.0-0ubuntu11.1 ProcVersionSignature: Ubuntu 3.13.0-48.80-lowlatency 3.13.11-ckt16 Uname: Linux 3.13.0-48-lowlatency x86_64 ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Mar 25 12:34:23 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-09-21 (185 days ago) InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.1) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/26/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.6.6 dmi.board.name: 0RF703 dmi.board.vendor: Dell Inc. dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.6.6:bd06/26/2011:svnDellInc.:pnOptiPlex745:pvr:rvnDellInc.:rn0RF703:rvr:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 745 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1436269/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

