I just installed a discrete GPU (7970) in my computer than already had a APU (5800-K) in it and runs Linux Mint 14. Following the instructions from other discussions (http://devgurus.amd.com/message/1279453#1279453), I run 'sudo amdconfig --adapter=all --initial' and 'export COMPUTE=:0'. In addition to causing known problems with the cinnamon desktop manager, I can't seem to detect the discrete GPU unless a monitor is plugged in to it. With a monitor plugged in to both the integrated and discrete adapters, clinfo reports what I expect. I unplug the monitor from the discrete card and clinfo lists the integrated GPU twice and completely misses the discrete one. Any idea what I'm doing wrong? Is there a good way to configure the X server to use the integrated device for the monitor and still be able to use the discrete card for computation?
Solved! Go to Solution.
i had a similar problem: clinfo would list the same pci bus:dev:fn twice and only use a single core of a 5970.
after trying various combinations of multi-gpu/xfire settings (aticonfig) in vain, the problem solved itself when
i upgraded from 12-10 to 13-1.
Thanks for this reply, but it makes me worried that dual gpus will just never work for me. I think that I am using driver version 13.1. Here's what I've done: After a fresh install of the OS. I downloaded the latest installer and ran it with the flag "--buildandinstallpkg Ubuntu/quantal". Then I installed the latest version (2.8) of the APP SDK.
If this differs from what you did, could you please let me know what you did that made it work?
It could solve the problem if you say exactly to export a display with the command below,
It solved my problem. I have the 12.10 driver
You should check a lot of things, I think you should do follow these steps,
p.s.: Strange things can happen, when I don't allow the X-fire in the CCC the clGetPlatformIDs() function causes me segfault...