Wow that took forever, damn kernel issues followed with power issues....
Anyway, here are my Ubuntu results. R9 290X (1040/1250)
GPU 1 - [STATS] 2014-Feb-11 00:27:11 | 4153.40 c/m | 16.60 sh/m | VL: 119 (100.00%), RJ: 0 (0.00%), ST: 0 (0.00%)
GPU 2 - [STATS] 2014-Feb-11 00:21:54 | 4237.20 c/m | 16.20 sh/m | VL: 26 (100.00%), RJ: 0 (0.00%), ST: 0 (0.00%)
Decided to run one command line on each GPU with 2 threads each just to measure individual performance. I'll run -t 0,0,1,1 next.
This is a 1000cpm change over my Win7.64 Mining rig with the same specs.
Thanks a lot NaN!!
I'll send you something tomorrow