Public bug reported:
After rebooting following a system update where kernel 5.4.0-31 got
installed, the main audio output stopped working. HDMI audio and USB
headphones still work. Rebooting using the previous kernel (5.4.0-29)
restores audio.
Description: Ubuntu 20.04 LTS
Release: 20.04
log of the update that broke audio:
Install: linux-image-5.4.0-31-generic:amd64 (5.4.0-31.35),
linux-headers-5.4.0-31-generic:amd64 (5.4.0-31.35),
linux-modules-extra-5.4.0-31-generic:amd64 (5.4.0-31.35),
linux-modules-5.4.0-31-generic:amd64 (5.4.0-31.35),
linux-headers-5.4.0-31:amd64 (5.4.0-31.35)
Upgrade: bind9-dnsutils:amd64 (1:9.16.1-0ubuntu2, 1:9.16.1-0ubuntu2.1),
linux-headers-generic:amd64 (5.4.0.29.34, 5.4.0.31.36), linux-libc-dev:amd64
(5.4.0-29.33, 5.4.0-31.35), linux-image-generic:amd64 (5.4.0.29.34,
5.4.0.31.36), bind9-host:amd64 (1:9.16.1-0ubuntu2, 1:9.16.1-0ubuntu2.1),
dnsutils:amd64 (1:9.16.1-0ubuntu2, 1:9.16.1-0ubuntu2.1), linux-generic:amd64
(5.4.0.29.34, 5.4.0.31.36), bind9-libs:amd64 (1:9.16.1-0ubuntu2,
1:9.16.1-0ubuntu2.1)
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-modules-extra-5.4.0-31-generic 5.4.0-31.35
ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
Uname: Linux 5.4.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: zeyelth 1921 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Thu May 21 13:05:44 2020
HibernationDevice: RESUME=UUID=8ede6c97-084e-4c19-b235-2ba8b2c5565c
InstallationDate: Installed on 2017-10-29 (934 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
MachineType: System manufacturer System Product Name
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-31-generic
root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-31-generic N/A
linux-backports-modules-5.4.0-31-generic N/A
linux-firmware 1.187
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-05-08 (12 days ago)
dmi.bios.date: 04/16/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1003
dmi.board.asset.tag: Default string
dmi.board.name: ROG ZENITH EXTREME
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1003:bd04/16/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGZENITHEXTREME:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1879939
Title:
Audio stopped working after 5.4.0-31 kernel update
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