An update on 09/07/2015 to 15.04 was a real catastrophe! Not only my computers crashed, all of my friends' computers as well. Ubuntu froze with normal BOOT! Mouse and keyboard functionality totally killed!
And now, how can we get rid of these bugs?
Clearly, it's a graphics driver problem, which probably could be solved with:
sudo apt-get install xserver-xorg-input-all
or
sudo apt-get install --reinstall xserver-xorg-input-all
But how can I get into the frozen update Version? When I start the automatic boot process, it always gets into the cracked version and freezes! Other later versions are working in poor or false graphic mode and I can start the routine above, so these versions are finally OK, but I can't put one of these working versions as Main-Version!
apt-get
. – kos Oct 08 '15 at 11:48