Boinc 6.6.20 will only see one gpu, there are two (not the same as each other).

I have tried setting <use_all_gpus>1</use_all_gpus> in cc_config.xml, makes no difference. Currently I have no changes other than the cc_config entry this is just an out of the box Boinc install.

Vista see's both cards, and I had no issues with Boinc using both cards prior to moving to 6.6.20.

Any ideas?

Rob

A link to the host would help, along with your cc_config and Boinc's start up messages,
<use_all_gpus> won't work, as it didn't get added until Boinc 6.6.25

Changes for 6.6.25

- client: add <use_all_gpus> config option. If set, use GPUs even if they're not equivalent to the most capable one.

Claggy