Yeah I had this yesterday with 3.27.91, but today the bug is gone (bionic updated to gnome-shell/mutter 3.27.92).
** Summary changed: - After login the screen pixelates for few seconds on GNOME on X + Graphics corruption in login animation to Xorg sessions ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Fix Released ** Changed in: mutter (Ubuntu) Status: Confirmed => Fix Released ** Changed in: xorg (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1753776 Title: Graphics corruption in login animation to Xorg sessions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1753776/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs