I just received 4 C1060’s through the developer program and have been working to install them in a nForce 780a motherboard (the Foxconn destroyer that used to be recommended). The machine is currently running ubuntu 8.04. I have downloaded and installed the 185.18.14 version of the driver and everything seemed to go smoothly. However whenever I query the devices with deviceQuery, I find the first one listed is a C1060, the second is the onboard nForce 780a SLI, the third is a C1060 and the fourth is a C1060. Running the typical tests confirms that devices 0, 2 and 3 perform like teslas and device 1 is quite slow.
How do I go about getting the 4th tesla recognized? I thought to disable the onboard graphics, (I don’t mind if the computer is headless). However the bios will not let me do this completely (it will only disable if an external graphics card is detected) and additionially I am not getting cuda to work without starting the x server. I will be happy to post any additional information that is helpful (such as output of lspci) but I didn’t want to prematurely clutter the message board with unnecessary information if this has a trivial solution.