Tried both cards with it off and on. The 256mb wouldn't boot with it off, and they both still lock up.
Though the strange thing is, if I save the resolution as being on the Radeon, it locks up almost right away (loads the icons on the desktop and the workbench bar, but locks up before Amidock). On the other hand, if I'm in a normal Amiga resolution, then go into a Radeon resolution, it works for quite some time, then locks up.
Not sure if the Afa OS has anything to do with it, but I know when I try to enable that, it doesn't even get as far as showing any workbench, the screen just stays black.
I'm thinking more and more that it's some sort of memory conflict, but I would think I'd be getting an error instead of it just freezing.
slaapliedje