With pulseaudio 6.0 (wily), when you unplug headphones, pulseaudio changes active port to Line Out, if plugged, or else to Speakers. Speakers and Headphones will mute, when active port changes to something else than respective port. Line out mixer level is not affected, when active port is change to something else. Line out is effectively muted, when headphone is plugged, and Auto-Mute Mode is set to "Line Out+Speaker" in alsamixer. As for auto muting setting for speaker, when headphone is plugged, I think auto muting speaker by pulseaudio is fine, especially, as auto muting setting for Speaker does not work in ALSA currently as noted above.
** Changed in: pulseaudio (Ubuntu) Status: New => Fix Committed -- 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/1436252 Title: Behaves inconsistently when you unplug headphones Status in PulseAudio: New Status in pulseaudio package in Ubuntu: Fix Committed Bug description: In the beginning headphones are plugged in, and "Auto-Mute Mode" set "Disabled" in alsamixer. Start pulseaudio. Then unplug headphones. Speakers are muted. Then plug headphones in. Speakers are muted. Then unplug headphones. Speaker volume is unmuted. I expect Speaker levels and muted/unmuted state of Speakers in alsamixer stay intact when you plug headphones in or out. And concerning the Auto-Mute Mode "Disabled", Speakers should not get effectively muted when headphones are plugged in. 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 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jarnos 2255 F.... panel-12-mixer jarnos 8103 F.... alsamixer jarnos 8313 F.... pulseaudio CurrentDesktop: XFCE Date: Wed Mar 25 11:59:07 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/pulseaudio/+bug/1436252/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp