I have an ASRock z87 motherboard, with x5 XFX 7950 cards on 1x 16x powered risers.
On BAMT boot I get the following errors:
(process:308): GLib-WARNING **: getpwuid_r(): failed due to unknown user id (0)
startpar: service(s) returned failure: gdm ... failed!
Takes me to command line. I can run startx fine and get to GUI interface. 0 graphics cards are listed.
I have tried multiple different USB sticks.
If I find an answer before anyone responds, I'll be sure to post it. I'm having a hell of a time finding anyone with a similar problem that actually posted the solution!