Re: nvidia-settings & xorg.conf and multi screens
I see a number of problems in your bug report.
First, the EDID for both CRTs is not getting detected:
(WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-0
(WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-1
While you don't neccesarily need the EDID for a CRT, it seems very strange that neither has one. How are you connecting the CRTs to the graphics card?
Second, if you're using multiple Device sections in xorg.conf, you need to specify the BusID in them, or the X server has no way of knowing which physical device you're referencing. This is likely the biggest problem.