Hello, I was affected by the same bug as you following the Linux 5.8.0-49-generic kernel update (everything is ok with the 5.8.0-48-generic kernel)
However, the problem has been solved with the X.org update which has been available for a few hours. Can you look for new updates available and test after updating the X.org server and restarting the PC? My PC : - Dell Inc. Inspiron 3847/088DT1, BIOS A11 05/07/2019 - EFI v2.31 by American Megatrends - Secure boot disable - CPU : Intel(R) Core(TM) i3-4150 CPU @ 3.50GHz - GPU : Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) - A single screen connected via HDMI. Resolution: 1920x1080 - RAM : 16 GB DDR3 My Ubuntu 20.10 : - Linux 5.8.0-49-generic #55-Ubuntu SMP Wed Mar 24 14:45:45 UTC 2021 - X11 - GNOME 3.38.2 - French language -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1923632 Title: Screen flickering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1923632/+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
