These kind of locks tend to occur when an application locks up
while it has a so called mouse/keyboard grab. When that
happens you can try to select a virtual text console with Ctrl+Alt+F1 and login. With the
following command you will get a list of all running processes: ps -aux | more
By killing the process that has the mousegrab, your desktop will
come to life again. Unfortunately you can't see which process that is,
so you will have to find out through trial and error. To kill a process
use: kill -9 pid
Here pid is the process id of the
process, which is the first number on each line reported by
ps -aux . You can switch back to the desktop with Ctrl+Alt+F7 (or
F8 through F9 depending on your
operating system) to see if things work again. When you press
Alt+Tab you should get a
response from the window manager. If not, you need to get back to the
text console and try to kill another process. |