If I understood your question right, that's exactly what happens: 1) I disconnected my speakers from the rear jack, and plugged my headphones into the front jack. After rebooting, the headphones are detected and the sound works - everything is perfect. I opened the Sound Settings dialog, and "Headphones" are present, "Line Out" is absent.
2) I plugged my speakers into the rear jack, and sound immediately stopped playing from the headphones. But the speakers are also silent, even though they're not muted in the GUI. I try muting and unmuting, switching between headphones and line out in the GUI, but nothing works - neither the speakers, nor the headphones. 3) I unplug the headphones, and the speakers start to work. I plug the headphones back in and they start to work, and the speakers are muted (even if I manually select line out from the GUI). Now, both my headphones and speakers are plugged in, and I decide to test the original bug again: 4) I reboot my system: No Ubuntu welcome sound (the drum sound when the lightdm greeter appears) is played. But when I log in and get to the desktop, the headphones work. The sound settings GUI shows both headphones and line out, and headphones are selected. 5) I suspend and resume the PC. The headphones stop working, and they are gone from the sound settings GUI. 6) I reboot again: Now, the Ubuntu welcome sound plays from the speakers. Headphones are silent. I log in and check the sound settings GUI: line out is present, headphones are absent. Unplugging and plugging in the headphones makes them detected and selected by default in the GUI, and the headphones start working. So, to correct my original description: Suspend/shutdown has a different effect from rebooting the system. -- 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/1442428 Title: Headphones not detected after fresh boot or suspend/resume cycle, until unplugged and plugged back in Status in alsa-driver package in Ubuntu: Incomplete Bug description: This is a regression from Ubuntu 14.04 (I have not tested 14.10). Headphones which were already plugged in prior to a suspend/resume cycle or a shutdown/reboot are not detected after a power-on (i.e., "Headphones: Built-in Audio" is absent from the "Output" tab in the Sound Settings). Unplugging the headphones and plugging them back in results in the headphones being detected and automatically selected. I used the ubuntu-bug tool to submit this bug report after a fresh boot, and after going through the troubleshooting steps (which unsuccessfully attempted to play some tones through the headphone jack), "Headphones" showed up in the Output tab (without me having to unplug them and plug them in again), but was not automatically selected ("Line Out" is selected by default). Manually selecting "Headphones" succeeded in enabling sound on the headphones. So it appears that perhaps pulseaudio does not automatically check for the presence of headphones upon boot or resume from suspend (or maybe it does, but the hardware isn't ready to respond at the time). ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-13.13~pre201504091631-generic 3.19.3 Uname: Linux 3.19.0-13-generic x86_64 ApportVersion: 2.17-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: furkan 2171 F.... pulseaudio /dev/snd/controlC0: furkan 2171 F.... pulseaudio CurrentDesktop: Unity Date: Thu Apr 9 20:45:11 2015 InstallationDate: Installed on 2014-06-06 (307 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SB failed Symptom_Card: Built-in Audio - HDA ATI SB Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: furkan 2171 F.... pulseaudio /dev/snd/controlC0: furkan 2171 F.... pulseaudio Symptom_Jack: Green Headphone Out, Front Symptom_Type: No sound at all Title: [GA-970A-D3, VIA VT2020, Green Headphone Out, Front] No sound at all UpgradeStatus: Upgraded to vivid on 2015-03-27 (13 days ago) dmi.bios.date: 12/16/2013 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F13b dmi.board.name: GA-970A-D3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF13b:bd12/16/2013:svnGigabyteTechnologyCo.,Ltd.:pnGA-970A-D3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-970A-D3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-970A-D3 dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1442428/+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
