Just upgraded to Ubuntu 20.4, seeing same symptoms, screen artifacts after X startup and some fonts corruption. Font problems are in some applications/windows only, e.g. Chrome window, gvim, terminal are all fine (so far). However Unity taskbar and System tray usually have broken fonts (some characters).
Video card: 00:02.0 VGA compatible controller: Intel Corporation Iris Plus Graphics 655 (rev 01) It happens with or without custom config (needed to stop video tearing): Section "Device" Identifier "Intel Graphics" Driver "Intel" Option "AccelMethod" "sna" Option "TearFree" "true" Option "TripleBuffer" "true" Option "MigrationHeuristic" "greedy" Option "Tiling" "true" Option "Pageflip" "true" Option "ExaNoComposite" "false" Option "Tiling" "true" Option "Pageflip" "true" EndSection Also tried Wayland but it's a no go because it freezes right after I enter password in gdm3. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1864778 Title: Intel Drivers Artifacts after Mesa-Dev Update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1864778/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
