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Debian on recent MacBooks


I have a late 2011 MacBook Pro (MacBookPro8,2), one with two
graphics chips in it (intel and radeon).  Installation went
absolutely fine (using EFI and grub-efi).  However, when it
comes to booting it, it's a world of pain.

By default, it gets confused trying to enable the radeon,
and shuts the display off entirely, which does not result
in a very usable system.
http://dentifrice.poivron.org/laptops/macbookpro8,2/ details
some of the nastiness, but given that this is bit old, is it
still necessary to rebuild stuff to get a working system?

Some pages gave instructions for physically disabling one
of the chips with grub using outb commands.  This allowed
boot with efifb only, but then X refused to start.  Also
tried building a 3.8 kernel, which apparently fixes KMS
issues, but still no joy--probably not using exactly the
right options here.

If anyone has got this working, using either the intel or
radeon driver (I'll settle for anything which gives a
usable display!) I'd be very grateful for any advice here.

Thanks all,

  .''`.  Roger Leigh
 : :' :  Debian GNU/Linux    http://people.debian.org/~rleigh/
 `. `'   schroot and sbuild  http://alioth.debian.org/projects/buildd-tools
   `-    GPG Public Key      F33D 281D 470A B443 6756 147C 07B3 C8BC 4083 E800

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