Report from my current test system:

GPU 0: HashCnt = 1280, time = 1773 ms, hashrate = 721 h/s

Adapter 0 - AMD Radeon (TM) R9 390 Series
Sensor 0: Temperature - 47.00 C                                                                          
Fan speed query:
Query Index: 0                                
Result: Fan Speed: 80%  

Catalyst 15.20
Ubuntu 15.10
Claymore CryptoNote GPU Miner v9.1 Beta - Linux - POOL Catalyst 14.6 (latest build I could find for linux)

I´m getting this error frequently:   {"id":1,"jsonrpc":"2.0","error":{"code":-1,"message":"Lowdifficultyshare"}}

pool: 'mine.moneropool.com'