[ubuntu] Desktop, unity disappeared

view full story

http://ubuntuforums.org – Ok, I wrote in my other thread, I'm new to Ubuntu. I'll change to it, but now I've got a test enviroment (with 12.10) on my notebook. So I can test it, and there's no problem if I make a mistake. 2 days ago after a reboot I got the message "The system is running in low-graphics mode" error... And I couldn't do anything. I tried to fix it as described here: http://ubuntuforums.org/showthread.php?t=439745 and here: http://askubuntu.com/questions/13101...-install-unity and as I saw some other places. But Unity is still broken. I could use only the basic Gnome envirom (Hardware)