Created attachment 107113 [details]
Kernel messages, round 1

Good news; I have some kernel messages to attach.  These were gained using
netconsole, which was on another machine.  It seems to me that it detects the
radeon FireMV2400 (although it never mentions it by name), and detects two of
the four connectors (I'm assuming two that are connected to the same chip; this
card has 2 chips with 2 displays each; total of 4 displays).