Same here on my Dell XPS 13 with i915 graphics. Occasionally it gets worse: my screen goes completely black and won't come back on unless I switch to an external monitor and back, or reboot.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1971428 Title: CPU pipe A FIFO underrun Status in linux package in Ubuntu: Confirmed Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1971428/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
