black screen after login, Mountain Lion on Macbook Retina

Just hang up with the Apple Support and it seems that it's really a software problem, but the laucnh of Mountain Lion is too close to have a known bug referenced to their knowledge base. I gave the case number of smartRaddish to the hotline too.

They advise me to make a reinstall of ML via the Recovery partition... I'll try this tonight, but, I really don't think that it will eliminate the issue.

To be continued...

Hi OriginFR i already tried to do a complete fresh install of Mountain Lion from the recovery partition on my rMBP. The result was the same. Random black screen after login. So your guesses are right it doesn't eliminate the issue.

Okay, so I'll recall the hotline to give them this info. Hope this'll accelerate the resolution of what we can now call "the mountain lion gfxswitch bug" 😉

I haven't seen it for a few days now, but the problem is I've done 2 things...

Did the boot into safe mode and changed the auto switch thing - and did the update from apple.

So, really not sure which one sorted it, but *touch wood* it seems to have done the trick. My laptop is usually off overnight, and seems to log in fine in the morning.

I'll report back if I see it again though.

So, I gave the tip to AppleCare that a ML re-installation does not solve the problem (thanks CJSpoorman). They udpated the case accordingly. They also asked me to make a direct feedback to Apple from the http://www.apple.com/feedback/ page. So I did it.

I encourage all of you to do the same thing 😉

The people who have this problem, are you using the program setresx?

I've restarted the computer 10 times without changing the resolution with setresx. Only in system preferences

--> No problems

I've changed the resolution with setresx to a higher res., then back to a lower res and changed the resulution back to best for retina in system preferences.

When I restarted then, I've got a black screen after the login screen 2 times.

In fact, i don't use any specific tool to change the resolution BUT, I regulary connect My rMBP to my 27" LED Cinema Display, and thus, change the screen/resolution setup ...

Indeed, after connecting it with a 27 inch monitor here, I've got the same problem.

I've a case ID with Apple and I've send this issue with the monitor to them.

I have a 15" Mid 2010 MBP and, after installing Mountain Lion, I'm getting the same black screen issue a short while after logging in. Disabling gfxswitch did not fix the issue but deactivating the automatic graphics switching in System Preferences eliminated the problem. It seems that the black screen symptom appears when the system switches from the Nvidia video card to the integrated Intel.

Apparently this problem manifested before for some 15" Mid 2010 MBPs like mine (I've got mine in June 2010). I never had this problem at that time. Hopefully Apple will fix it again quickly, as running only on the Nvidia card drains the battery too quickly.

See this: http://support.apple.com/kb/TS4088

Just had the issue reapperaing after a fresh boot. So the safe boot setting is not a fix for me!

For me also an external Display is involved (30" tft via duallink dvi adapter from apple). However up until now i cannot see any direct relations to the external display. The issue happens also when i have not been using the external display for 2 days.

This has been solved with this patch:

http://support.apple.com/kb/DL1559

apparently not, because, I applied it about a week ago, when it was released 😉

I cannot agree with you more on the release date aspect.

Surprisingly I installed and updated OS X ML on the 30th and I don't recall this patch.

I reinstalled on the 31st (trying to get rid of the black screen).

Today (1st) I updated with the referred path and have not seen the black screen ever since (around ten restarts).

I can only say that apparently (and only apparently) it worked for me :-?

Hopefully this mistery will be solved soon ;-)

I even got an error That I cant install it on this System :s and it's a retina ;)

probably because, like me, you already had installed it 😉

does PowerNAP settings are present on the energy saving preference pane ?