*** This bug is a duplicate of bug 761065 ***
    https://bugs.launchpad.net/bugs/761065

On Fri, Apr 29, 2011 at 06:13:11AM -0000, Jeff Olson wrote:
> *** This bug is a duplicate of bug 761065 ***
>     https://bugs.launchpad.net/bugs/761065
> 
> I just tried the kernel AceLan Kao posted in comment #13 and no luck.
> Connecting an external monitor causes a system lockup on my system. I
> went back to the 2.6.39 kernel in kernel-ppa and everything works
> better, it seems.

Ah, bummer Jeff.

If you have some time, you could do your own bisection search to figure
out which patch from 2.6.39 is needed for your system.  For some
paint-by-numbers directions on doing this see:

  https://wiki.ubuntu.com/Kernel/KernelBisection

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https://bugs.launchpad.net/bugs/762855

Title:
  [sandybridge-m-gt2+] Display on external monitor (vga) is black on 13"
  MacBook Pro 8,1 (x86_64)

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