I had the same bug after updating Kubuntu from 25.10 to 26.04 LTS. For me, completely removing and then reinstalling the amdgpu driver package with the latest version solved the issue.
-- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kscreen in Ubuntu. https://bugs.launchpad.net/bugs/2152794 Title: Opening the KDE displays system menu gives an error of "No KScreen backend found." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kscreen/+bug/2152794/+subscriptions -- kubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
