There may be a solution to use normal vesafb with the drivers, as we discussed in this thread
, thanks to mixer030. Adding the lines:
Option "ConnectedMonitor" "CRT"
Option "IgnoreDisplayDevices" "TV"
to XF86Config seems to fix the problem. (You may have to use "ConnectedMonitor" "DFP" if you have a DVI flat panel, hopefully that would work as well). Also, I think this fix would disable using multiple video outputs. I did notice the problem occurred (prior to the above fix) on both cards I have used that had 3 outputs, but it worked fine on the card that had only two outputs. (See the other thread for more details).
I reported my findings to firstname.lastname@example.org
yesterday and received a reply today asking for more information. At least we know nVidia is working on it!