Note: After a complete system re-install my audio had been working fine: **Stock kernel/Intel VGA/GDM/Gnome**
Then the problem re-occurred after I did some work with an alternative stack: **Stock kernel/Nvidia/lightdm/Gnome** and then switched back to my original stack. **Perhaps lightdm does some dodgy low level configuration? Or perhaps it's something to do with using Nvidia (with prime-select nvidia)?** (if you're wondering why I'd change my DM for a session it's because nvidia drivers + gdm = dead system. See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559576 so when I need the nvidia stuff for OpenCL support in Darktable I have to switch DMs.) Back on the original stack, the command line fix in comment #7 worked for me on 4.4.0-24-generic after unplugging and re-plugging in the jack. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1575078 Title: [XPS 15 9550, Realtek ALC3266] Headphone jack stops working after a while Status in alsa-driver package in Ubuntu: Confirmed Bug description: I'm experiencing a strange behavior with a headphone jack on my laptop. I have an external audio speaker connected to it. When I disconnect the speaker and reconnect it again it stops working. Even more, laptop audio stops working too. And after the reboot, I don't even see any of the audio devices. I've googled a lot and tried different fixes from forums with no luck. After a while, I've accidentally discovered that putting the laptop to the sleep mode and rebooting system after brings audio back to live. Even more, if speakers were attached during this sleep-reboot procedure, they are starting to work as well. However, after the next reboot speakers are not working again. And if I will plug them out and in - problem with completely missing audio returns. P.S. I'm using laptop-mode-tools package on my laptop. Recovery after hibernation made me believe that it's somehow related. But after uninstalling this package nothing really changed. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: kop 3224 F...m pulseaudio /dev/snd/controlC0: kop 3224 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 26 12:17:03 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-22 (3 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_Card: Встроенное аудио - HDA Intel PCH Symptom_Jack: Black Headphone Out, Left Symptom_Type: Sound works for a while, then breaks Title: [XPS 15 9550, Realtek ALC3266, Black Headphone Out, Left] fails after a while UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/07/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.02.00 dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1575078/+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
