This sounds like it might be bug 1767312. Please try the workarounds listed in that bug.
** Tags added: radeon ** Summary changed: - All system graphic glitch when play video + [radeon] All system graphic glitch when play video ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889289 Title: [radeon] All system graphic glitch when play video To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1889289/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs