Try these:
knoppix xserver=XF86_SVGA
knoppix xserver=XFree86 xmodule=svga
THX
for the answer, I already found myself.
Anyway the resulting display is inacceptabel small: 640x480 on a screen with 1600px in x. And also the Pingu icon takes 25% of the window in y.
Is their any way to get an acceptable screen?

bydey