Black screen instead of login manager

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http://forums.opensuse.org – Greets everyone. I'm having a rather peculiar problem booting into openSUSE 11.2. After the installation (which goes fine), i get a black screen and my system freezes. In detail, I can see the splash screen and booting details, but at the moment I am supposed to see a login manager, i just get a black screen. Sometimes it has a cursor indicator in the top left, sometimes it doesn't. Same thing happens in failsafe mode too. This happens over and over, no matter which installation type I choose, 32bit or 64bit, KDE/Gnome/XFCE. My problematic box is: AMD Athlon 3200+ 64bit 2GB DDR ATI Radeon x1950pro <-- which I believe might be causing all these issues. It's rather tedious to see this happening again and again. Any help will be appreciated. (Distributions)