There is a patch now that is expected to be in kernel version 5.13.
If you're willing to build your own kernel, you can find the patch here
and do it yourself:
https://github.com/thesofproject/linux/issues/2748
** Bug watch added: github.com/thesofproject/linux/issues #2748
https://github.com/thesofproject/linux/issues/2748
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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/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:
USERPID 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:
USERPID ACCESS COMMAND
/dev/snd/controlC0: gdm1126 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
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