Re: X unable to validate any modes with 9xxx Nvidia drivers.
It looks like your CRT is returning bogus information for the EDID:
(--) NVIDIA(0): @@@ (CRT-1): 350.0 MHz maximum pixel clock
Unless this problem didn't exist in older drivers, this looks like a problem with your CRT. You can attempt to work around it by setting UseEDID to false. See the driver README for more information.