Hey there;

I have had a very similar problem with my Toshiba Laptop. In my case, however, I had too much screen image for my screen (as a result only the top left hand two thirds of the screen was displayed, the rest remained virtual and unseen).

The solution is to boot knoppix with one of the cheat codes at the boot:. You can press "F2" to see them all, but the two of interest in this case would be screen=1024x768 and xserver=XFree86 xmodule=fbdev fb1024x768.

You might have to fiddle with those two a bit, try them together, etc... but that should do the trick. Let me (us) know by posting again.

Good luck!

Civ