Only VGA resolution?

[GdB]

Hi all,

I have a problem with the new PC at my work. The only possible resolution under X is 640x480. I tried everything to get better resolutions, but no success: cheatcodes fb1024x768, screen=1280x1024, using KDE-controlcentre. CTRL-ALT-+ doesn't do anything either.

Has somebody a good idea?

My hardware:

IBM Netvista M42.
Graphics: Intel845G.
Monitor: IBM P260

Runs without problem with Windows XP.

Thanks,

GdB
PS Knoppix 3.4 c't edition