Eylem: I'm sure you'll get a longer answer, for the moment, a workaround (that allows you to carry on, and/or save your work) is:
Ctrl-Alt-F1
killall -9 compiz
unity --replace
Ctrl-Alt-F8 (and wait 10-15 seconds for unity to "catch up"... for some reason it takes a long time to enumerate the existing open windows)
The other bug is that sometimes 'gnome-screensaver' opens (invisibly) on top of everything a "killall gnome-screensaver" from Ctrl-Alt-F1 will nuke that.
Eylem: I'm sure you'll get a longer answer, for the moment, a workaround (that allows you to carry on, and/or save your work) is:
Ctrl-Alt-F1
killall -9 compiz
unity --replace
Ctrl-Alt-F8 (and wait 10-15 seconds for unity to "catch up"... for some reason it takes a long time to enumerate the existing open windows)
The other bug is that sometimes 'gnome-screensaver' opens (invisibly) on top of everything a "killall gnome-screensaver" from Ctrl-Alt-F1 will nuke that.