Re: 250 GTS on Fedora 13 malfunction
vitb, what beta driver version did you try?
256.29 should have a fix for the DMAR / intel_iommu problem. 256.25 did not have this fix.
Of course, you could have a different issue altogether.
Does X come up at all before the monitor loses signal? It's hard to tell from your description. An nvidia-bug-report would be very helpful.