Hi,

a 'workaround' with some side-effects that worked for me is the "grub2 +
setpci"-trick to (re-)enable AHCI (see [1]). The positive side-effect
is, you get somewhat better IO-performance (my SSD read throughput went
up about 30%). The negative side-effect is, you loose suspend/resume
support. To the latter, there seems hope (see [2]).

[1] http://en.gentoo-wiki.com/wiki/Apple_Macbook_Pro#AHCI
[2] https://bugs.launchpad.net/mactel-support/+bug/817017

My main goal was actually not fixing the DVD drive but getting rid of
the wasted time during boot while waiting for the ata code to time-out.

 - Axel

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https://bugs.launchpad.net/bugs/782389

Title:
  DVD drive doesn't work on MacBookPro8,2

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