For 6 times, in 8 attempts, my retina macbook pro fails to boot up. All goes black after I enter my user password and I have to press the power bottom for 3 sec to restart. It sounds like a system error, and for sure didn't happen before I installed mountain lion, should I attempt to do a fresh install? Or run any tests?
Any advice appreciated.
MacBook Pro (Retina, Mid 2012), OS X Mountain Lion
I'm having the same problem as you. Also with retina MacBook pro, with mountain lion installed. Black screen after I type my password.
I'm having the exact same issue. The screen is still on though, you can play with the brightness settings - it's just not logging in, and stay blank and black.
I haven't been able to fix it, but I did find a workaround. I can log into the guest account, which loads up fine, then switch to my account using the dropdown in the upper right. Then once my account is fired up, I can go back and log out of the guest account. This is a total pain.
It actually didn't start doing this for me right after Mountain Lion, which I ran for a day or two with no real problems. It began immediately after the first update to Mountain Lion that Apple pushed out. I don't remember what it was called, but it was a system update (not iPhoto or another of the apps)
Having the same issue. Hope an OS for firmware update will fix this soon.
Same problem here. Anyone get it working?
You might want to take your question/problem to the Mountain Lion forum - https://discussions.apple.com/community/mac_os/os_x_mountain_lion - from the answers you're receiving, it seems as if others are having the same problems but no solutions as yet.
Regards,
Clinton
Hey guys...
Just posted this potential solution over in the forum Clinton mentioned. Not sure if it's a proper fix, but it seemed to work for me.
Cheers...
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Had my first experience with this just now. Shut down the MBPr for it's longest off time since getting it last week (about 6 hrs) and logged in to the BSOD.
My go-to solution on any other MacBook has always been the PRAM reset.
Restart your machine. Hold down CMD+OPT+P+R before the gray screen shows up (harder now than on the older, slower machines). Keep holding it down until the startup sound plays 2 or 3 times. Then release the keys and let it boot up normally.
No idea why this works. Don't have any clue what PRAM even is or what it would have to do with all this - but it worked for me. At least this time. Maybe it won't the next!
Hope it helps you all...
http://support.apple.com/kb/HT1379?viewlocale=en_US&locale=en_US
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
For everybody with the same problem, Apple has contact me and are at the moment going through mine and others system logs to identify the problem. As soon as I have any further updates on that, I will post it back here.
I've had a similar problem after installing Mountain lion. Instead of blacking out after logon i experience intermittent blackouts when using the system. I can usually still see the mouse pointer and eventually the display returns to what i was working on. Annoying though.
First I had Kernel Panics, now a black screen on startup. It must have something to do with the graphics software. I did two clean installs, I Zapped the Pram about 4 times and also did multiple Permission repairs and Safe reboots. It only happemed immediately after installing mountain lion. None of the standard fixes have worked.
Same here, also Retina MBP...
Worked for me...
Strange as the problem still exists for me after disabling the automatic graphic switching in display options. I have booked time with a genius tomorrow and lets see if they can replace the MBPr for me. I also get a blurry screen after recovering from sleep for half a second or so. The system log shows a windowserver kernel panic for me. I have kept logs starting from when I installed ML so hoping that it's going to be a straight swap to a new machine.
I am having this issue as well. 😠 Clearing PRAM did nothing for me. Mid-2012 2.6 Ghz Retina MacBook Pro running Mountain Lion.
I'm having the same problem. Bought Macbook Pro 15'' Retina Display already with Mountain Lion, I received it last Friday. Tried to solve the problem with all the suggested solutions everyone left here in Apple Foruns but I'm afraid it still does the same thing.
Mutumah, what were Apple's conclusions as to your problem?
Black Screen after log in with Mountain Lion
