Michel Dänzer <daenzer@debian.org> writes: On Fri, 2007-05-18 at 17:42 +0800, William Xu wrote: > Michel Dänzer <daenzer@debian.org> writes: > > Your 3D driver may be broken. > > How to confirm this? Some 3d games like ppracer, works smoothly here. The problem I'm thinking of only affects applications that never call glViewport for the initial window size. Another example would be the game trigger. You are right, trigger doesn't work either.. William