** Also affects: nvidia-graphics-drivers (Ubuntu)
   Importance: Undecided
       Status: New

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to chromium-browser in Ubuntu.
https://bugs.launchpad.net/bugs/1874882

Title:
  chromium-browser: intermittent display glitch when more than 1 window
  open

Status in chromium-browser package in Ubuntu:
  Incomplete
Status in nvidia-graphics-drivers package in Ubuntu:
  New

Bug description:
  When using Chromium, and there's 2 or more windows open, an
  intermittent hardware glitch is triggered, as if the screen was
  divided into a small quadrant grid, and these quadrants were
  horizontally and vertically skewed & degraded into particles.

  The glitch happens in a 1/4-second, at random intervals between
  events.

  OS: Ubuntu 18.04 / elementaryOS 5.1.3
  Processor: Intel i5 540M  (ThinkPad laptop)
  Video: NVidia NVS 3100M (using proprietary driver 340.108)
  Chromium version: 80.0.3987.163 (Build oficial) Built on Ubuntu

  It only happens in Chromium or Chrome, since version 70+.
  Firefox does not exhibit this behavior.

  Logging out from the user session and logging back in and reopening 
Chromium/Chrome makes the triggered glitch disappear.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Pantheon
  Desktop-Session:
   'pantheon'
   '/etc/xdg/xdg-pantheon:/etc/xdg'
   
'/usr/share/gnome:/usr/share/pantheon:/home/dmayr/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop'
  DetectedPlugins:
   
  DistroRelease: elementary OS 5.1.3
  Env:
   'None'
   '/usr/local/lib'
  InstallationDate: Installed on 2020-02-07 (80 days ago)
  InstallationMedia: elementary OS 5.1 "hera" - stable amd64 (20191202)
  InstalledPlugins:
   
  Load-Avg-1min: 0.73
  Load-Processes-Running-Percent:   0.1%
  MachineType: LENOVO 2924BV6
  NonfreeKernelModules: nvidia
  Package: chromium-browser 80.0.3987.163-0ubuntu0.18.04.1 [origin: Ubuntu]
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-46-generic 
root=UUID=35f065a1-29da-4be8-896a-ed1ace85e367 ro quiet splash vt.handoff=1
  ProcVersionSignature: Ubuntu 5.3.0-46.38~18.04.1-generic 5.3.18
  Tags: hera third-party-packages
  ThirdParty: True
  Uname: Linux 5.3.0-46-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip kvm lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 10/11/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6UET70WW (1.50 )
  dmi.board.name: 2924BV6
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr6UET70WW(1.50):bd10/11/2012:svnLENOVO:pn2924BV6:pvrThinkPadT410s:rvnLENOVO:rn2924BV6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.family: ThinkPad T410s
  dmi.product.name: 2924BV6
  dmi.product.version: ThinkPad T410s
  dmi.sys.vendor: LENOVO
  modified.conffile..etc.default.chromium-browser: [deleted]

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