dual monitor order swapped in twinview setup

[cgsexton]

I'm running into an odd issue regarding display order in X11. The displays may be off when the machine boots (and at least one of the displays will likely be going through a video switcher that may/may not be able to properly report the EDID anyways), so I've added stuff to ignore the EDID. All of that seems to work great - if one of the monitors is off, order is kept and it works as expected when the monitor is turned on. The BIOS post shows up on the display plugged into the DVI-I connection marked "1" on the back of the card, so at that level, it appears to be choosing the correct primary display (the secondary doesn't show anything at boot, which is fine).

However, once X11 starts up, the display order gets flipped and what should be CRT-0 is really CRT-1, and vice versa. I can modify the behavior by swapping CRT-1 and CRT-0 information for twinview (making CRT-0 +1600+0 instead of +0+0), but I don't have confidence that if it goes into a different switcher or a slightly different setup that it won't swap again. It seems that whatever the BIOS picks up as the primary display should be the lowest ordered monitor detected, but when X runs, that doesn't seem to be the case - it seems to be somewhat arbitrary.

Can anyone shed any light on this behavior or lend any advice on how to get the required behavior?

The setup is as follows:

Card: eVGA branded GTX 285
Monitors: 2 identical VGA
Driver: 185.18.36

Attached is the nvidia-bug-report.log, run with logverbose 6.

[cgsexton]

BTTT .. still have the issue, haven't had any luck with nVidia tech support either.

[cgsexton]

BTTT

[cgsexton]

BTTT

[onxeur]

I have the same problem with an EVGA GTX 285 and 2 DFPs. The workaround is to add the following to the Device or Screen sections in xorg.conf:

"TwinViewXineramaInfoOrder" "CRT-1, CRT-0"

Or this for a single display:

"UseDisplayDevice"  "CRT-1"