Please run a memory test to check for physical RAM corruption using either:
https://www.memtest86.com/ https://www.memtest.org/ That will take several hours. Please also try adding a line to your /etc/environment of the form: CLUTTER_PAINT=disable-offscreen-redirect and then reboot. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1886345 Title: Icons and text corrupted and/or missing Status in gnome-shell package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Bug description: This is a fresh install of 2020.04. Issue is that the display routinely gets corrupted and flickers with blocks of previously open windows. If left without a restart, the system menu text will get replaced by odd characters and system dialog boxes will not display, buttons for the dialog boxes will briefly appear with no text when cursor is over them. Very occasionally, the system will stop responding to the mouse and keyboard after clicking an icon on the dash. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.36.1-5ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Jul 5 15:24:13 2020 DisplayManager: gdm3 InstallationDate: Installed on 2020-05-03 (63 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) RelatedPackageVersions: mutter-common 3.36.2-1ubuntu1~20.04.1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1886345/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
