How to supress dual-link?

[omv]

Is there an option I can use to force a single-link connection through one of the ports? I want to drive my T210 with a single-link, since I don't have enough dual-link cables, and the monitor doesn't always lock in correctly (swaps the channels giving wrong pxel order).

Further complications:
o I'd like to do this on only one port - the other drives an ACD 30, which can't handle single-link at full res
o I'm using independant screens rather than twinview


From my screwing around, it almost seems like the driver ignores almost all modelines and refresh data when it detects the T210 through DVI - no matter what I request, monitor reports 2048x1536x60, whether I force a 2048x1536x30 modeline, or a 1600x1200x60....


Thanks in advance,

-dan