all system freeze, can't do anything, so I can't switch tty with Ctrl+Alt+FX(In
reply to ominous from comment #4)
> For those who experience a freeze, please try the following:
> 
> - Switch to a terminal with Ctrl + Alt + F7
> - Switch back to your original environment with Ctrl + Alt + F1
> 
> I am experience some freezing but I am not entirely sure if it is the same
> freezing as in this thread. Doing the above trick unfreezes the system.

all system freeze, can't do anything, sound freeze too
so I can't switch tty with Ctrl+Alt+FX (I use it too when xserver or gnome
freeze/crash)