I am having the same issue on my Thinkpad T490. Very tinny/high treble audio with no bass.
-- 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/1913977 Title: Bad sound quality (no bass) on Thinkpad T490s Status in alsa-driver package in Ubuntu: New Bug description: Sound works on with 20.04 on the Thinkpad T490s, but sound quality is noticeably worse than on Windows. It looks like the same bug here: https://bugs.launchpad.net/ubuntu/+source/alsa-ucm-conf/+bug/1872108 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-41-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: hmahmood 1360 F.... pulseaudio /dev/snd/pcmC0D0p: hmahmood 1360 F...m pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Jan 31 19:14:57 2021 InstallationDate: Installed on 2021-01-30 (1 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) PackageArchitecture: all ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Speaker, Internal Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: None of the above Title: [20NYS83800, Realtek ALC257, Speaker, Internal] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/31/2020 dmi.bios.release: 1.70 dmi.bios.vendor: LENOVO dmi.bios.version: N2JET92W (1.70 ) dmi.board.asset.tag: Not Available dmi.board.name: 20NYS83800 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.20 dmi.modalias: dmi:bvnLENOVO:bvrN2JET92W(1.70):bd08/31/2020:br1.70:efr1.20:svnLENOVO:pn20NYS83800:pvrThinkPadT490s:rvnLENOVO:rn20NYS83800:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T490s dmi.product.name: 20NYS83800 dmi.product.sku: LENOVO_MT_20NY_BU_Think_FM_ThinkPad T490s dmi.product.version: ThinkPad T490s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1913977/+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
