Public bug reported:
On Focal Fossa the microphone is recognised but doesn't work.
Chromium shows the microphone as present but off, and if it is renabled
it goes off again after a couple of seconds.
Chromium logs this error:
[ 2149.047888] sof-audio-pci 0000:00:1f.3: error: no reply expected, received
0x0
[ 2149.177469] sof-audio-pci 0000:00:1f.3: firmware boot complete
[ 2160.561825] sof-audio-pci 0000:00:1f.3: error: no reply expected, received
0x0
[ 2160.656755] sof-audio-pci 0000:00:1f.3: firmware boot complete
[ 2414.391790] sof-audio-pci 0000:00:1f.3: error: no reply expected, received
0x0
[ 2414.487256] sof-audio-pci 0000:00:1f.3: firmware boot complete
Mar 20 23:09:24 user-ThinkPad-X1-Carbon-7th
chromium_chromium.desktop[9531]:
[9531:9531:0320/230924.861503:ERROR:pulse_util.cc(300)] pa_operation is
nullptr.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: user 1687 F.... pulseaudio
/dev/snd/pcmC0D0p: user 1687 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 20 23:03:01 2020
InstallationDate: Installed on 2020-03-11 (9 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200309)
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: None of the above
Title: [20R1000RUS, Realtek ALC285, Black Mic, Right] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2QET19W (1.13 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20R1000RUS
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.modalias:
dmi:bvnLENOVO:bvrN2QET19W(1.13):bd01/15/2020:svnLENOVO:pn20R1000RUS:pvrThinkPadX1Carbon7th:rvnLENOVO:rn20R1000RUS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 7th
dmi.product.name: 20R1000RUS
dmi.product.sku: LENOVO_MT_20R1_BU_Think_FM_ThinkPad X1 Carbon 7th
dmi.product.version: ThinkPad X1 Carbon 7th
dmi.sys.vendor: LENOVO
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-03-12T15:40:19.308712
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1868330
Title:
Lenovo ThinkPad-X1-Carbon-7th Gen microphone doesnt work
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