I've hidden comment #24 on this bug due to a privacy request. Here's the redacted text of that comment (from ~archenroot-gmail):
Another related bug is available on related bug in Arch: https://bugs.archlinux.org/task/49157 Interesting is suggestion about possible HDMI vs sound conflicts: Comment by [redacted] - Monday, 08 August 2016, 14:28 GMT When I changed video drivers, the problem seemed to morph into a different problem. When I use nouveau/intel with bumblebee, it seems that plugging headphones in constantly works like it should. Headphones show up as headphones and the computer seems to recognize both. BUT... there is no sound from the headphones, even after a restart. I am starting to believe that this is an issue with either the nvidia driver, or bumblebee/optimus. I think I had read in the past that the sound is conflicting with the HDMI port or something like that. I reverted back to nvidia due to compatibility issues with nouveau (or I'm just not reading all the necessary documentation) and this original problem came back. -- 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/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/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
