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]).
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 /bugs.launchpad .net/mactel- support/ +bug/817017
[2] https:/
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