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I have a 17-in Macbook Pro, running Snowleopard and Ubuntu 12.10. Ubuntu runs fine, except when I connect it to and external monitor. It exhibits a considerable lag in graphics acceleration. i.e. when minimizing windows using (super key / command + w);

Relevant info

  1. Product name by executing sudo dmidecode -s system-product-name is MacBookPro8,3
  2. Graphic card and other hardware info by exectuting lspci gives VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Whistler [AMD Radeon HD 6600M Series]

I have searched on forums, exprimented with propritery drivers (which did not work at all) but nothing seems to enhance it. Also, I did not experience this on my Desktop. I am hoping someone has already found a solution.

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Are you running the proprietary drivers (FGLRX) or the open-source ones (radeon)? Also, the Linux drivers for AMD are always quite inefficient. Coupled with a DE like Unity that's pretty ressource-intensive, framerates tend to drop. –  Glutanimate Nov 28 '12 at 0:56
    
I am running the open source. I tried the proprietary one and everything breaks. I even had hard time restoring the driver. –  Ali Nov 28 '12 at 1:41
    
You should try following these instructions on installing FGLRX, if you haven't done so already –  Glutanimate Nov 28 '12 at 21:13
    
This does not work. Funny thing, when I run it in a VM on mac it works fine. –  Ali Dec 5 '12 at 0:11

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