Hi all, in my computer i have two GPUs, 1st HD6770 2nd HD5770, so but my boinc dont see second card...Windows see, windows change index number after add of second card, GPU-Z see both card, catalist see both card, but boinc not (actualy 6.12.34)..is there any "black magic" to say boinc, that second card for computing is there? thanks for help
Jhapa

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Bingo..it works...3 hard resets made repair....

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Hi all, in my computer i have two GPUs, 1st HD6770 2nd HD5770, so but my boinc dont see second card...Windows see, windows change index number after add of second card, GPU-Z see both card, catalist see both card, but boinc not (actualy 6.12.34)..is there any "black magic" to say boinc, that second card for computing is there? thanks for help
Jhapa

YES THERE IS...you need to add a cc_config.xml file to the Boinc data directory that looks like this:
<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

The file MUST be done in Notepad in Windows, other programs add characters and the file won't work. Second you need to attach a 2nd monitor to the 2nd card on pc startup or make yourself a dummy plug to make it think there is a monitor hooked up to it. You will also probably have to load the AMD software twice, once for each gpu, to make Boinc see both of them. Remember to exit and then restart Boinc after each step as you get it set up.