Public bug reported: Happy to do further testing, fresh install of Bionic. Discovered this when trying to do a video conference using the built in mic and was able to verify the issue by installing gnome-sound-recorder.
ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: asif 2213 F...m pulseaudio /dev/snd/controlC0: asif 2213 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue May 8 11:58:37 2018 EcryptfsInUse: Yes InstallationDate: Installed on 2018-04-28 (9 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Mic, Internal Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:PCH successful Symptom_Type: Digital clip or distortion, or "overdriven" sound Title: [80X7, Realtek ALC236, Mic, Internal] Sound is distorted UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/08/2018 dmi.bios.vendor: LENOVO dmi.bios.version: 4MCN31WW(V2.03) dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo YOGA 720-15IKB dmi.modalias: dmi:bvnLENOVO:bvr4MCN31WW(V2.03):bd03/08/2018:svnLENOVO:pn80X7:pvrLenovoYOGA720-15IKB:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct31:cvrLenovoYOGA720-15IKB: dmi.product.family: YOGA 720-15IKB dmi.product.name: 80X7 dmi.product.version: Lenovo YOGA 720-15IKB dmi.sys.vendor: LENOVO ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769936 Title: [80X7, Realtek ALC236, Mic, Internal] Sound is distorted Lenovo Yoga 720 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1769936/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs