I tried the 11.4 Live KDE CD on my Lenovo Z61M (equipped with ATI X1400 Mobility Radeon). Initially the display runs better than my actual distro (Mint KDE 9), and I can use the secondary display (a Lenovo 19"). After some minute, the primary screen lose the refresh rate (this is my interpretation), and screen results unreadable. The secondary display remains visible so I moved the Control Center on this and tried to disable the desktop effects, but it didn’t helped. I recovered the screen by switching to a text console (with Ctrl-Alt -F1), and then back. After a few seconds the primary display broke again
It seems to use radeon driver.
I actually didn’t installed OpenSuse, what could I try with LiveCD before proceed to install?