I recently bought a nVidia GeForce2 graphics card, and wanted to test it using Knoppix, before permanently replacing my current card. I can sucessfully boot KNOPPIX_V3.1-2003-01-01-EN.iso using my current hardware.

When I installed the GeForce2 and booted, I noticed first that the audio message "initiating startup sequence" was garbled. It was as if it had been chopped up into about five pieces, and then the pieces rearranged and played back twice each. So it sounded something like this: "startu- startu- initiat- initiat- sequ- sequ- ing- ing- ence ence" (just so you get the idea, and in case someone recognizes it).

The graphics card was (as far as I can see) correctly identified, and a "vesa" driver was selected. Knoppix completed booting as usual, and all appeared to be OK, until I tried to use the mouse. The "X" was frozen in the middle of the screen and refused to move.

When I re-installed my old card (ATI Rage pro) and tried again, everything was back to normal, and the startup sound and mouse worked as usual.

I suspect some kind of interrupt problem, but I don't know where to start looking to analyse this. What further information do I need to provide so that someone can help me with this?
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Best regards,
Peter Hugosson-Miller