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)