running 20.04 on thinkpad t470, with "Mesa Intel® HD Graphics 620 (KBL GT2)" graphics and gnome version 3.36.1. Whenever I am watching a video, on any of my displays (laptop, or 2 external), there is a screen tear in the middle of the screen. I have never experienced this before while I was using 18.04, and it started immediately after installing 20.04.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lance 1482 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-24 (11 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 20HDCTO1WW
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-generic root=UUID=8968c86c-f827-46b8-8aee-0434135ba0df ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
RelatedPackageVersions:
linux-restricted-modules-5.4.0-28-generic N/A
linux-backports-modules-5.4.0-28-generic N/A
linux-firmware 1.187
Tags: focal
Uname: Linux 5.4.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/27/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N1QET87W (1.62 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20HDCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1QET87W(1.62):bd02/27/2020:svnLENOVO:pn20HDCTO1WW:pvrThinkPadT470:rvnLENOVO:rn20HDCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T470
dmi.product.name: 20HDCTO1WW
dmi.product.sku: LENOVO_MT_20HD_BU_Think_FM_ThinkPad T470
dmi.product.version: ThinkPad T470
dmi.sys.vendor: LENOVO
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1876980
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.