Hey everyone, I'm new here (these forums), that is why this is being posted in this section.
I'm using Ubuntu 11.04 with an AMD/ATI Radeon 6990 (soon to be 2 6990s). I use poclbm with Catalyst version 11.8 and AMD APP SDK version 2.5. I'm using Gnome and Compiz as my desktop & window manager.
My problem is: Whenever I mine with both cores at the same time, my OS locks up and I have to hard reset. My OS also locks up if I leave a single core mining for a period of time. I get about 10 seconds of mining time on both cores before it freezes (I do get shares on both cores during this time), and up to 30 seconds or a minute with just one core running.
How I invoke poclbm (through a shell script):
echo "#started 1#"
echo "changing directories..."
./poclbm.py http://USER_NAME:PASSWORD@deepbit.net:8332 -v -w 128 -f 10 -d 1
I have to use the line "export DISPLAY=:0" for poclbm to see both GPU cores (aticonfig can see both). I use a much higher frame (-f) parameter for adapter "0" to leave resources for running my display.
I hope someone has some advice for me as I've exhausted my own means to solve this. I'm happy to provide any more relative information. I will be back from work at 8:30 (EST), any help would be appreciated.