Have you made sure all your packages are up-to-date? Very likely, the intel driver that shipped with 11.3 is too old for the Intel HD3000 GPU. It's possible that opensuse has packaged a newer version of the driver and in an update to 11.3.
However, I have to wonder why you would have recently installed 11.3 on a new computer. While 11.3 is still technically supported, it will cease to be supported early in 2012, and is already well over a year old.