black screen after login, Mountain Lion on Macbook Retina

I havent tried it but i think it is a driver's bug and should be only can fixed through updating the driver

For the long run, yes.

But this should help the user get back up and running for now.

Did you try it?

Cheers!

I've given it a go... will see how it pans out.

Mine seemed to be random as and when it went to black, or booted properly.

Is everyone who are having issues having it from the login screen? Or do some of you have it with a single user logged straight in?

Jep, always after typing password and hitting enter.

One static i can observe is that it happens randomly, it takes different amounts of hardresets but it always works when os x asks if it should reopen all previously opened programs.

As soon as this box appears im sure it will load properly and it does not matter if i tell it to open the old programs or start fresh.

Well, since yesterday, I reinstalled GFXCardStatus and my Wacom drivers...

Strangely my machinew has not done this since, and I still canot nail down exactly why, there is no set of variables that seem to have a discernable effect. Hmm.

Well, I will report back if I find anything, but for the time being, it seems (temporarily) resolved. However, I also submitted a bug report to Apple linking to this forum post.

I do take comfort in that its a fairly common issue so likely nothing wrong with my spanking new machine 😝

Cheers guys.

I have also encountered this issue, disabling automatic graphics switching has fixed it for me but that is not the solution we want. Battery is drainig much faster now. Hopefully apple will release a new update to resolve this issue.

yup, me too...exactly the same issue, and only since Mountain Lion. pretty unimpressed...

I have worked around this issue. My wife's ML install booted into a grey screen and sat there. After some digging I resolved with the following;

1) boot into SAFE MODE

2) Turned on Automatic Login for her account

3) rebooted

It did pause on the same grey screen (with the pointer) but then it logged her in.

this morning I had exactly the same trouble after a normal shutdown last night: black screen logging in my user.

I'm using an new mbp retina with ML installed as upgrade of Lion: I was NOT plugged in AC power and my default resolution in 1920x1200. I logged in my account many times before having this issue.

I do not now what exactly solved my probem but here is what I did:

1. plugged AC power in

2. logged into guest user and immediately logged out

3. shutdown

4. boot doing a PRAM reset before

After this steps was performed, I was able to log into my account even after 2 more reboots

Enabling automatic login seems to solve the issue for me.

^ I wondered if that would be the case...

I hadn't had the issue till I made my missus an account on the laptop.

Little Snitch is not the culprit 😟

Hi guys,

Exactly the same problem here. It really seems to be a software/firmware problem, because, when I get the problem, I log in my MacBook Pro from SSH, delete the "com.apple.CoreGraphics.plist" file in ~/Library/Preferences, the log in from my MacBook Pro and all work well.

Now, waiting for M.Lion or firmware update to get this fixed ...

Same problem here - brand new MBP with Retina, all working fine with Lion, updated to Mountain Lion a little less than a week ago and about 30% of the time get a black screen after logging in. Running at 1680 x 1050. I did think it was a HD problem as the first time it occured I had to repair disk via disc utility and then was fine. However still ocurring so obviously a grpahics issue - awaiting update.

I have the same problem.

It happened randomly. However, it has more chance after a long peroid of shut down, for example, shut down in the evening and turn on the next day morning.