So I followed this guide to installing the mining software onto 11.04. Everything loaded OK, or appeared to. But once it was all done, neither aticonfig nor poclbm recognized two of my four 5850s. In particular, I've got two on x1-x16 risers and two on x16-x16 risers; the two on the x16-x16 risers are the ones NOT being recognized (which is puzzling to me). I'm not running any dummy plugs, but I read that they aren't necessary on Linux; is this true?

Anyone have any idea why this might be happening, or how to fix it?

Also, how the hell does one become an "established member"? I'm really pretty annoyed that I couldn't post in the thread for the guide and ask for help there.