Hello,
Thanks in advance for reading my post and to this great forum!
I have a Mac Pro 1,1, now 3,1 with Chameleon and Mavericks, and everything is working fine.
Recently I've upgraded the graphic card to AMD Radeon Hd 7950.
At the beginning my Mac refused to start, and froze at the grey screen.
Only after changing the parameter from:
<key>GraphicsEnabler</key>
<string>Yes</string>
to No GraphicsEnabler I could start Chameleon again.
The "problem" now is that in the About This Mac window/More Info I see:
Graphics AMD Radeon HD 7xxx 3072 MB
My new GPU is not recognized...

Yes... I know that it's not a serious problem... it's only affecting the appearance, but I ❤ my Mac Pro.
Is there a way to fix this?
Thanks a lot for your attention!
Long Live the Mac Pro 1,1!