Public bug reported:
Upgraded from Ubuntu 20.04 to 22.04 at the release date.
I get a blinking screen about 2-3 times a day. Dmesg shows the following:
i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
Lenovo Thinkpad T480s connected to Lenovo Thinkpad Basic Docking Station, type
40AG.
I'm not doing anything special when this happens. I've been using the same
monitor, dock and cables for several years.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-27-generic 5.15.0-27.28
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: oystein 6834 F.... wireplumber
/dev/snd/controlC1: oystein 6834 F.... wireplumber
/dev/snd/controlC0: oystein 6834 F.... wireplumber
/dev/snd/seq: oystein 6832 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue May 3 14:46:03 2022
EcryptfsInUse: Yes
InstallationDate: Installed on 2021-08-03 (273 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
MachineType: LENOVO 20L8002VMX
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-27-generic
root=UUID=e9eb1db1-6947-4826-85ca-b36e8bdf8f75 ro quiet splash
i915.enable_psr=0 vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.15.0-27-generic N/A
linux-backports-modules-5.15.0-27-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu1
SourcePackage: linux
UpgradeStatus: Upgraded to jammy on 2022-04-21 (11 days ago)
WifiSyslog:
dmi.bios.date: 11/17/2021
dmi.bios.release: 1.49
dmi.bios.vendor: LENOVO
dmi.bios.version: N22ET72W (1.49 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20L8002VMX
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.ec.firmware.release: 1.22
dmi.modalias:
dmi:bvnLENOVO:bvrN22ET72W(1.49):bd11/17/2021:br1.49:efr1.22:svnLENOVO:pn20L8002VMX:pvrThinkPadT480s:rvnLENOVO:rn20L8002VMX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20L8_BU_Think_FM_ThinkPadT480s:
dmi.product.family: ThinkPad T480s
dmi.product.name: 20L8002VMX
dmi.product.sku: LENOVO_MT_20L8_BU_Think_FM_ThinkPad T480s
dmi.product.version: ThinkPad T480s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug jammy
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https://bugs.launchpad.net/bugs/1971428
Title:
CPU pipe A FIFO underrun
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