Hi NaN. I have 4*R9 290x running on Xubuntu 64 and they are round 16000 cpm for two days. Today I replaced my old motherboard and restart the miner. It hits 16000 cpm than decreases gradually about 100 cpm per sec. After it hit around 8000 cpm, the computer freezes. I restart the computer and try to run the miner. The miner isn't be able to start anymore. Do you have any idea about it? My catalyst is the latest version from amd.

I also tried the old version and it didn't work too.

EDIT: The error message is "error in xptMiner/clInit.cpp, line 96: Method clGetDeviceIDs(...) failed (errorcode -1)"