On Ubuntu 20.10 x64 frequently updated.
I noticed in the last week that after a while there are huge screen artefacts, that I would describe as flashing. Squares of screen flash, normally linked to widgets on screen.
E.g.: the app bars on the left can start flashing blue, or parts of editors.
I noticed it more in firefox, made worse by scrolling.
VirtualBox is severely affected too.
VS Code.
It does not happen immediately and the feeling I get is that it starts happening when there is a lot on screen. For example has not happened at all in this session, but I have done little or nothing screen-heavy.
The issue gets worse, then might settle down for a while.
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: xorg 1:7.7+19ubuntu15
ProcVersionSignature: Ubuntu 5.8.0-50.56-generic 5.8.18
Uname: Linux 5.8.0-50-generic x86_64
NonfreeKernelModules: socwatch2_11 vtsspp sep5 socperf3 pax
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 18 13:53:28 2021
DistUpgraded: 2020-11-27 20:39:33,916 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process “./xorg_fix_proprietary.py” (No such file or directory) (8))
DistroCodename: groovy
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 6.1.16, 5.8.0-49-generic, x86_64: installed
virtualbox, 6.1.16, 5.8.0-50-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1043:8534]
InstallationDate: Installed on 2020-02-01 (441 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: ASUS All Series
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-50-generic root=/dev/mapper/fedora_bomba-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to groovy on 2020-11-27 (141 days ago)
dmi.bios.date: 11/11/2015
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2801
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97-A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2801:bd11/11/2015:br4.6:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ97-A:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: ASUS MB
dmi.product.name: All Series
dmi.product.sku: All
dmi.product.version: System Version
dmi.sys.vendor: ASUS
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.102-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.10.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.2.6-0ubuntu0.20.10.1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
Firefox screenshot example