Comment 17 for bug 817017

@Anders: I don't think so, I have a MBP 8,1 and booting in EFI (with grub2-efi) does not help me to get AHCI mode on, I can force it using the 'setpci' on grub (actually I have a script that puts it on every linux entry everytime I do a update-grub). Unfortunately, after suspend, it still goes back to ata mode (actually, I'm not sure what happens, the rootfilesystem simply becomes unaccessible, but I guess that's what's happening). I've disabled AHCI for now (or rather, haven't enabled it), but I do hope the patch gets merged into mainline kernel.

PS.: I'm running precise x64