Si le bureau gèle ( 'est pas de la clim' que je parle)

If nothing works, not even changing to a textconsole (alt-ctl-F1)
 or restarting the X-server (alt-ctl-backspace), (Mon préféré)


Le système BRUISE:

The SYSRQ-key (print-key, on the upper right side of the keyboard) will help you
 to cleanly reboot a frozen system.

The following sequence of key-combinations are possible:

# ALT+SYSRQ+R (should give back control of the keyboard )

# ALT+SYSRQ+S (issues a sync)

# ALT+SYSRQ+E (Sends term to all processes but init)

# ALT+SYSRQ+I (Sends kill to all processes but init) Ooooh, j'aime !

# ALT+SYSRQ+U (filesystems are mounted readonly, prevents fsck at reboot)

# ALT+SYSRQ+B (reboots the system, without the previous steps this would be a hard reset).


Source et Crédit:

http://www.linuxquestions.org/linux/answers/Applications_GUI_Multimedia/What_to_do_if_the_desktop_freezes