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
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https://bugs.launchpad.net/bugs/1769936
Title:
[80X7, Realtek ALC236, Mic, Internal] Sound is distorted Lenovo Yoga
720
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