We've found the chipset for this thing--it's the Cirrus CLGD5465, mounted on the motherboard.
But which driver does this use? the chipset is listed in XF86Setup, but i can't tell if i should be choosing something other than the regular svga driver. At least we've determined that it's not bringing the whole system down; the IP address was wrong, which was the real reason we had been unable to telnet in. But after we telnetted in after the most recent crash, the display didn't come back, and we still needed to reboot. Ideas, anywone? rick