Adding second GPU CentOS 6.5
I have added a second GPU and I am trying to get my computer to use both so that I can have a quad display (using two monitors on each video card). They are both RV620 LE Radeon HD 3450's. CentOS sees the first GPU and uses it no problem. When I run /sbin/lspci | grep VGA it sees the other GPU but isn't using it. I have seen things online about editing xorg.conf but my system doesn't have one. Should I be using xrandr to do this? If so how? Any help would be greatly appreciated!
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