I was just able to reproduce it by previewing a 3D screensaver (Molecule). After clicking Leave Fullscreen X crashes with this as the error message on screen. Killing the session (ctrl-alt-backspace) will recover responsiveness and allows me to log back in.
I was just able to reproduce it by previewing a 3D screensaver (Molecule). After clicking Leave Fullscreen X crashes with this as the error message on screen. Killing the session (ctrl-alt- backspace) will recover responsiveness and allows me to log back in.