Here's a verbose log file from XFree, which looks not too bad, but it still doesn't give any usable output. The output image looks as if it was on a CRT with wrong timings (too high vertical refresh rate), but it is a DFP inside a laptop. I found some other people with Samsung laptops, they all had the same problems, and it seems as if it is never running on Samsung laptops.
My System is SuSE 8.2, default kernel 2.4.20-4GB.
If you need any other information please ask.