Hi all, I've freshly installed Ubuntu Mate 20.04 on LENOVO_MT_81NX_BU_idea_FM_Yoga S740-15IRH with the same problem. No sound no speakers. It seems the Realtek codec driver is not able to configure the speaker for the system.
** Attachment added: "dmesg output" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1857552/+attachment/5373615/+files/bootmessages.txt -- 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/1857552 Title: [81NX, Realtek ALC285, Speaker, Internal] No sound at all Status in alsa-driver package in Ubuntu: Confirmed Bug description: In dual boot machine (lenove S740 laptop) sound is fine on windows side. Headphones work on linux side, but there is no sound at all from speakers on the ubuntu 19.10 ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.3.0-24.26-generic 5.3.10 Uname: Linux 5.3.0-24-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: hu-mka 1574 F.... pulseaudio hu-mka 5552 F.... alsamixer CurrentDesktop: ubuntu:GNOME Date: Wed Dec 25 20:14:17 2019 InstallationDate: Installed on 2019-12-22 (3 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) 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/controlC0: gdm 1126 F.... pulseaudio hu-mka 1574 F.... pulseaudio hu-mka 5552 F.... alsamixer Symptom_Jack: Speaker, Internal Symptom_Type: No sound at all Title: [81NX, Realtek ALC285, Speaker, Internal] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/15/2019 dmi.bios.vendor: LENOVO dmi.bios.version: BKCN20WW(V1.02) dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0R32862 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga S740-15IRH dmi.modalias: dmi:bvnLENOVO:bvrBKCN20WW(V1.02):bd07/15/2019:svnLENOVO:pn81NX:pvrLenovoYogaS740-15IRH:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct31:cvrLenovoYogaS740-15IRH: dmi.product.family: Yoga S740-15IRH dmi.product.name: 81NX dmi.product.sku: LENOVO_MT_81NX_BU_idea_FM_Yoga S740-15IRH dmi.product.version: Lenovo Yoga S740-15IRH dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1857552/+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
