From the log the error is this one: Received an X Window System error. This probably reflects a bug in the program. The error was 'BadValue (integer parameter out of range for operation)'. (Details: serial 4347 error_code 2 request_code 131 (XInputExtension) minor_code 53) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the MUTTER_SYNC environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the meta_x_error() function.)
** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2029413 Title: Tapping the top bar with the touchscreen crashes GNOME on Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2029413/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs