This question already has an answer here:
I just installed 14.04 over my old 12.04 partition on my Macbook Pro 10,1 (which is dual-booting with OS X) by following the instructions here. The only difference is that I'm using rEFInd instead of rEFIt. The proprietary NVIDIA drivers worked great with 12.04, but now I'm unable to boot into Unity with it in 14.04.
Generally, I just get a black screen after the Grub menu, though occasionally I get some kind of panic screen like this, where I see errors like:
[drm: __gen6_gt_force_wake_mt_get] *ERROR* Timed out waiting for forcewake old ack to clear.
[drm: __gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out
[drm: __intel_ring_setup_status_page] *ERROR* render ring: wait for SyncFlush to complete for TLB invalidation timed out
Using the nouveau drivers works fine, but everything feels sluggish so I would really like to get the NVIDIA drivers working.
Has anyone successfully gotten the NVIDIA drivers working with the GT-650M Mac Edition?