my 295 can only run one wu properly, the other gpu works fine, is detected and no sli issues, but after 5-10min of crunching the error message comes out and i loss that wu. Since there's a wu limit i have to stop the downloads or in 60 min i'll have 1 wu crunching and 9 errors...

the os is ubuntu jaunty x64 with cuda 2.3 and 185 nvidia driver

what possible solutions should i try??

thanks in advance

i´ve installed windows 7 64 and i´m trying to make boinc use the gpus

i´ll look for some of those programs you wrote and see if it´s a card problem

right now i´m crunching collatz and seti with both gpus... ¬¬ i really don´t get it

You may need to look into adding the LimitVideoPresentSources entry to the registry to get the second core working. Or do what I did and give up on CUDA entirely.

were you ever able to find an answer to this? I currently have a zotac gtx 295 and have the same issue. I have tried to get both going using vista and win7 but with no luck.

current config:
core i7 920
zotaz gtx 295 driver 190.62
asus p6t delux
6gb gskill ddr3 1600
dual monitors, 1 with dvi port 1 and the 2nd connected to the hdmi port

I can get gpu 0 to run when I have both monitors connected to dvi ports but when I use the hdmi port only gpu 1 will work. I am confused and frustrated so any help would be great.

I have an EVGA GTX295 and in order to get both GPUs crunching I have to activate PhysX in the second GPU. I have both DVI conected to two monitors (really it's a KVM switch) and the desktop is extended to the second "monitor".

I tried it sometime with GPUGRID and it worked fine. Now it is with Collatz because the high temperatures.

Win Vista 32 bits
Nvidia driver 190.38

I finally got my 295 going with 190.62 as detailed here.

http://forums.nvidia.com/index.php?showtopic=101930&pid=586227&st=40&#entry586227

I don't need reg fixes, secondary or fake monitors any more. This may be Windows specific though.