Hey So I tried just installing the proprietary drivers like you did and running cgminer, and cgminer spits out GPU 0 failure, disabling, for all the cards excpet one, and so then they all list in cgminer as OFF. I followed a few different guides on getting cgminer up and running in ubuntu/xubuntu and no luck. All the cards just show as off, expect for one. And then a few seconds in my display will go blank and I'll loose picture. Computer still on and running, no display. An ideas whats going wrong? I don't think theres anyway that 1600w wouldn't be enough for all 6 but is it possible?
Suggestions? I really just want to get this damn thing stable. I've had all the parts for almost 7 days now -___-
I was setting up three 7950s today and actually found that I need the beta drivers (from the additional drivers in the settings menu) in order to use multiple cards. That fixed most of my problems.
After all the cards were working properly I frequently got reboots right after launching cgminer, I managed to fix that with a powered riser...
1600 watts on the output side of the power supply would be cutting it really, really close. My three 7950s right now are pulling 940 watts from the wall (pre-tweaking).