What I saw today was that the X session somehow got "disconnected" from input devices. The mouse would move, but clicks and keyboard events were ignored. CTRL-ALT-F1 got to me a virtual terminal, where I could restart GDM, and all has been fine since.
What I saw today was that the X session somehow got "disconnected" from input devices. The mouse would move, but clicks and keyboard events were ignored. CTRL-ALT-F1 got to me a virtual terminal, where I could restart GDM, and all has been fine since.