It's not specific to rhythmbox, reassigning to gtk but it might be freetype or something else in the stack. Could you add your journalctl log just after seeing the issue? What videocard/driver do you use? Do you get the problem at random time or maybe sometime after suspend/resume for example?
** Package changed: rhythmbox (Ubuntu) => gtk+3.0 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to rhythmbox in Ubuntu. https://bugs.launchpad.net/bugs/1767162 Title: Random stripes and dots To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1767162/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs