HI, I recently started mining with my radeons on GUI miner very latest version. When it is mining the hashrate is decent ~600MH/s. But if I leave it be and go to sleep, or work, after I come back the cards sit idle and nothing is happening. GUIminer log is full of Warning: Job finished Tahiti is idle.
Cannot figure out what's going on, as all power saving features are disabled on my system.
I tried setting some flags like -v -w256. They increase the rate, but often fail will longpooling (or something similar) I/O failing. And it still goes idle after a while.
Driver on the cards are latest beta, everything is up to date as far as I know. Windows 64bit
I guess you are mining on Eligius pool. Try another one. It seems Eligius generates this kind of issues frequently on same cards under guiminer.