====== Fix Ubunut Unity, compiz ======

Fix errors in ubuntu, unity, compiz

When the Desktop is frozen and unusable, compiz killed or shut down in some unusual way you can restart it to gain some/full functionality.

Login to a text shell (tty-1 to tty-6) by pressing STRG-ALT-1 to -6.
<code  bash>
> DISPLAY=":0.0" compiz --replace
</code>
or 
<code bash>
> DISPLAY=":0" compiz --replace
</code>

For restarting the GUI (because you can not reboot while someone else - you - is logged in)
<code bash>
> DISPLAY=":0.0" unity --replace
</code>