Hi, got exactly the same issue with two identical laptops (Lenovo ThinkBook 13s-IML). One has the current latest kernel from Ubuntu 20.04 (5.8.0-40), for the other one I installed a more recent kernel (5.9.16-050916) using mainline. Microphone does not work for both.
Also, I tried some steps from https://help.ubuntu.com/community/SoundTroubleshootingProcedure, and when running : wget -O alsa-info.sh http://www.alsa-project.org/alsa-info.sh && chmod +x ./alsa-info.sh && ./alsa-info.sh I get the following error : cat: '/sys/module/snd_soc_skl_hda_dsp/parameters/*': No such file or directory Finally, I attached the output from alsa-info.sh. ** Attachment added: "alsa-info.txt" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1904213/+attachment/5457089/+files/alsa-info.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/1904213 Title: Built-in microphone not working with 20.04 on ThinkBook 13s IML [Realtek ALC257] Status in alsa-driver package in Ubuntu: Confirmed Bug description: After installing current 20.04 release on ThinkBook 13s IML with Intel audio card built-in microphone is not working - I'm unable to record anything. I could confirm that it was working in Windows 10 (previously installed on that laptop), and when I'm using headphones their microphone is working fine. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65 Uname: Linux 5.4.0-53-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.12 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: anlar 1496 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Nov 13 19:07:34 2020 InstallationDate: Installed on 2020-10-29 (14 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:sofhdadsp failed Symptom_Card: sof-hda-dsp - sof-hda-dsp Symptom_Jack: Black Mic, Right Symptom_Type: Only some of inputs are working Title: [20RR, Realtek ALC257, Black Mic, Right] Recording problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/29/2019 dmi.bios.vendor: LENOVO dmi.bios.version: CQCN24WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ThinkBook 13s-IML dmi.modalias: dmi:bvnLENOVO:bvrCQCN24WW:bd10/29/2019:svnLENOVO:pn20RR:pvrLenovoThinkBook13s-IML:rvnLENOVO:rnLNVNB161216:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrLenovoThinkBook13s-IML: dmi.product.family: ThinkBook 13s-IML dmi.product.name: 20RR dmi.product.sku: LENOVO_MT_20RR_BU_idea_FM_ThinkBook 13s-IML dmi.product.version: Lenovo ThinkBook 13s-IML dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1904213/+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
