Graphics problem after upgrading to Ubuntu 11.04
I've just upgraded my Ubuntu 10.10 to 11.04, however I'm getting troubles with it.
In 10.10 I had no problem at all, I could use all desktop effects with compiz(cube, effects on windows, etc). However since I'm using 11.04 I'm no able to use no even the most basic desktop efects, the only way to work is using the mode Ubuntu Classic with no effects, and even so there's some weird pixeling at the right lower and upper part of the screen.
If I log in in modes Ubuntu or Ubuntu Classic with effects, the screen starts blinking and it doesn't allow me to see the menu or windows. Some times the windows get stuck at the upper panel without the minimize, maximize and close buttons.
Since I was able to use all desktop effects in the former version, shouldn't I be able to do it in this one?
I appreciate any advice you could give me.
Thanks in advance.