Comment 13 for bug 296118

OK, just had the problem occur again. Absolutely no diff in dmesg or Xorg.0.log. Can still navigate with the keyboard. xmodmap and xev show nothing funky (xev does not receive mouse events). It appears no app knows anything about the mouse (pointer does not change over window edges/firefox links), but the pointer does move.

This was triggered by opening a firefox window and gnucash...this is what triggered it the last time it happened too, but the problem does not always involve gnucash (firefox is pretty much always open).

I have never seen anything like this. Next time it happens I will plug in a wireless mouse to check whether X will recognize a new mouse.