Just wanted to add that after someone suggested the problem might be in GNOME, I've made a fresh installation of Kubuntu 20.04 and haven't had any problem for 2 days.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1886204 Title: Flickering and sudden resolution changes on 20.04/18.04 and old Radeon HD 6570 card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1886204/+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