Bass speakers not enabled on Lenovo Yoga 7 Gen 7 (14ARB7)

[Saverio Miroddi]

The Lenovo Yoga 7 Gen 7 (14ARB7) has 4 speakers - 2 trebles and 2 basses.

The treble speakers work, but the bass ones don't.

I think this is very similar to https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1926165, but that patch does not solve the problem, I suppose because the chipset is not the same (ALC245 on this machine vs ALC295 on that.

This report has been sent from a system with Pipewire (and kernel 6.0), but this can be ignored, as the problem reproduces the same way on a system without Pipewire (kernel 6.0 is needed because of keyboard issues).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: pulseaudio 1:15.99.1+dfsg1-1ubuntu1
Uname: Linux 6.0.0-060000rc3-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: saverio 2016 F.... wireplumber
 /dev/snd/controlC0: saverio 2016 F.... wireplumber
 /dev/snd/seq: saverio 2014 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: MATE
Date: Sun Sep 18 00:08:29 2022
InstallationDate: Installed on 2022-09-15 (2 days ago)
InstallationMedia: Ubuntu-MATE 22.04.1-6.0rc3 "Custom Jammy Jellyfish" (20220910)
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/08/2022
dmi.bios.release: 1.27
dmi.bios.vendor: LENOVO
dmi.bios.version: K5CN27WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76463 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Yoga 7 14ARB7
dmi.ec.firmware.release: 1.27
dmi.modalias: dmi:bvnLENOVO:bvrK5CN27WW:bd05/08/2022:br1.27:efr1.27:svnLENOVO:pn82QF:pvrYoga714ARB7:rvnLENOVO:rnLNVNB161216:rvrSDK0T76463WIN:cvnLENOVO:ct31:cvrYoga714ARB7:skuLENOVO_MT_82QF_BU_idea_FM_Yoga714ARB7:
dmi.product.family: Yoga 7 14ARB7
dmi.product.name: 82QF
dmi.product.sku: LENOVO_MT_82QF_BU_idea_FM_Yoga 7 14ARB7
dmi.product.version: Yoga 7 14ARB7
dmi.sys.vendor: LENOVO
modified.conffile..etc.default.apport: [modified]
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.default.apport: 2022-09-15T11:39:08.571662
mtime.conffile..etc.pulse.default.pa: 2022-09-15T11:39:08.207685

[Saverio Miroddi (64kramsystem)]

Interestingly, somebody found a workaround; see https://github.com/PJungkamp/yoga9-linux/issues/8.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.