Try alsamixer, press F6 select HDA Intel PCH, then disable Auto-Mute. I attached my configuration on my M4800
** Attachment added: "configuration" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1786495/+attachment/5174612/+files/Screenshot%20from%202018-08-13%2011-09-04.png -- 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/1786495 Title: [Precision M4800, Realtek ALC3226, Green Headphone Out, Front] No sound at all Status in alsa-driver package in Ubuntu: New Bug description: I am head no sound from my headphone jack. Laptop speaker work fine. Tried 2 different headphones and still no sound. pavucontrol can see my headphone and I see the sound bar move but no sound comes out. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.15.0-30.32-generic 4.15.18 Uname: Linux 4.15.0-30-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC1D0p: hhernandez 2083 F...m pulseaudio /dev/snd/controlC1: hhernandez 2083 F.... pulseaudio /dev/snd/controlC0: hhernandez 2083 F.... pulseaudio CurrentDesktop: MATE Date: Fri Aug 10 07:59:09 2018 PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: hhernandez 2083 F.... pulseaudio /dev/snd/controlC0: hhernandez 2083 F.... pulseaudio Symptom_Jack: Green Headphone Out, Front Symptom_Type: No sound at all Title: [Precision M4800, Realtek ALC3226, Green Headphone Out, Front] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/19/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A14 dmi.board.name: 0V5GVY dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA14:bd05/19/2015:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0V5GVY:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Precision M4800 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1786495/+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
