[ubuntu] Dual ATI GPU causes GUI to crash - Is there a fix to this?

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http://ubuntuforums.org – I love playing arounud with linux and it's distros, primarily ubuntu and it's derivitives. I have noticed something that is a real pain!! I have a dual boot system: Win7 x64 and Ubuntu 9.10 x64. I love to play games on my win7 partition but love to be productive in on my ubuntu partition. The issue comes from the fact aht I have two ATI GPUs in a crossfire setup to play the newer games at higher resolutions. Once I switch back over to ubuntu, if I have both cards in the machine still, than no mater what I try, the GUI for ubuntu WILL NOT LOAD!!! I am stuck starting in the terminal. It isn't even like the GUI starts and I can see my desktop and then BAM!! I get booted out and sent to the terminal. Nope. I start the machine, ubuntu does its loading progress bar thing and then straight to the terminal. I have searched around and haven't seen anyone else have this same issue but I might have missed something. Anyone have any ideas? I hate having to power down my win7 partition, pull out my second GPU, and then start my ubuntu partition JUST to use ubuntu. It is a pain in the neck. It wouldn't be that big of a deal if I didn't game on my win7 system. I play games like Crysis, Far Cry 2, Assassins Creed, etc. Games that will not work in wine or crossover, sorry, I have tried. Is there a solution to this issue? Thanks for your help guys! -Spydey :P P.S. Here are my specs: AMD Phenom 9950 oc'd 3.2Ghz Asus M3A79-T Deluxe Mobo 2 x ATI HD3870 in CrossfireX (for Win7) 4 gigs DDR2 PC8500 1066 Mhz Win7 x64 & Ubuntu 9.10 x64 (Hardware)