I have just run an update for Debian Testing, the first update for 5 days, and when I start X I have no keyboard and no mouse.
The mouse pointer is displayed but won't move and using the keyboard has no effect including the alt-sysrq combinations and I can't get to a terminal using alt-F(n).
I can run and close an X application remotely using ssh and I can kill the unresponsive X server remotely using ssh. I can also kill individual X applications remotely. It doesn't look as though the system is locked in any way as the clock on the bottom bar (xfce) updates and the cpu load meter also appears to be updating.
I haven't the remotest idea where to start looking for this problem. Could someone please help?