Seems related to https://bugs.launchpad.net/ubuntu/+source/alsa- driver/+bug/1784485, as I'm seeing the same symptoms, with the same temporary improvement enabling the power save as described above.
Asus UX533 Kubuntu 18.10 (4.18.0-11-generic) fresh install (dual boot with Windows 10). -- 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/1742852 Title: [hostname, Realtek ALC294, Speaker, Internal] No sound at all after windows update Status in alsa-driver package in Ubuntu: Confirmed Bug description: After a windows update I lost all the sound on my ubuntu machine. It's the second time that this happends. My sound is unmuted and at a loud level and nothing is comming out of my speakers. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.13.0-26.29~16.04.2-generic 4.13.13 Uname: Linux 4.13.0-26-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gbergeron 2408 F.... pulseaudio gbergeron 3656 F.... alsamixer CurrentDesktop: Unity Date: Thu Jan 11 22:21:23 2018 InstallationDate: Installed on 2017-11-29 (43 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) 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/pcmC0D0p: gbergeron 2408 F...m pulseaudio /dev/snd/controlC0: gbergeron 2408 F.... pulseaudio gbergeron 3656 F.... alsamixer Symptom_Jack: Speaker, Internal Symptom_Type: No sound at all Title: [hostname, Realtek ALC294, Speaker, Internal] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/23/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX430UAR.203 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX430UAR dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX430UAR.203:bd08/23/2017:svnASUSTeKCOMPUTERINC.:pnUX430UAR:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX430UAR:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: UX dmi.product.name: UX430UAR dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1742852/+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
