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yurtesen
Miniboss
‎02-26-2012 02:41 PM

Linux Nvidia primary, Radeon headless OpenCL not finding radeon?

Hello,

1- I am trying to install an nvidia card to use with the display and radeon for calculations. However once I install the nvidia driver, the clinfo does not show Radeon anymore. (I didnt try/check with nouveau driver ... )

So, is it because X is not running on this card? If yes, is there any instructions on what to do to run a dummy X on it?

Does this work better on Windows? or would it have made any difference if both cards were from AMD?

Thanks,

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1 Solution
dmeiser
In response to yurtesen
Elite
‎02-29-2012 10:22 AM

Normally you'd just have to list the devices in your /etc/X11/xorg.conf. For example in my xorg.conf I have the following three devices:

Section "Device"

          Identifier  "aticonfig-Device[0]-0"

          Driver      "fglrx"

          BusID       "PCI:1:0:0"

EndSection

Section "Device"

          Identifier  "aticonfig-Device[1]-0"

          Driver      "fglrx"

          BusID       "PCI:4:0:0"

EndSection

Section "Device"

          Identifier  "aticonfig-Device[2]-0"

          Driver      "fglrx"

          BusID       "PCI:5:0:0"

EndSection

You can find the BusID by running the lspci command and looking for your graphics devices. When you add your devices to the xorg.conf they should be running after you restart your x server.

Cheers,

Dominic

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