Graphics glitch/corrupt login screen images

[spamurai]

So I updated to Yosemite a couple of days ago on my 2011 Macbook Pro and I have shut my macbook's lid putting it into sleep/logging out several times just like I always do...

I can't recall exactly how many times, but about 1/4 to 1/3 of the time, when I open my macbook and wake it to login, it wakes up with corrupt or glitched images around the login screen...

I can still type my password (even though I can't aways see it) and login.
It also displays my account image correctly as well as the text in the top right corner...

It just appears to be an issue with the transparency or reference to the background image that is displayed...

Here are 2 photos:

Any ideas? Or shouldn't I have upgraded my OS?

Has anyone else seen this?

What can I do?

 

[aliensporebomb]

Ah!

I'm getting similar issues in iPhoto when using Nikon .NEF (raw) files. It causes iPhoto to look similar to the second screen.

I suspect we might be seeing an OS update soon.

 

[Olddiverman]

I have the same problem on my MacBook Pro early 2011.

 

[sparky1499]

Funnily enough my 2011 is doing the same!

 

[Olddiverman]

Cured (so far!)

I booted using my original install dvd and ran Repair Disk. Rebooted into 10.10 and ran Repair Permissions, restarted and so far all is ok.

 

[sparky1499]

Mine has been ok for the past couple of days.

I do plan to back up my home folder and nuke it from orbit. Just to be sure.

(Read as clean install instead up upgrade from Mavericks)

 

[Olddiverman]

Spoke too soon!

Crap again. Must be 10.10.1 soon.

 

[aliensporebomb]

I can only hope -

I even did a clean install and still getting infrequent issues. I wish there would be an update soon.

 

[Mr. Retrofire]

https://www.macrumors.com/2014/10/28/macbook-pro-2011-graphics-lawsuit/

 

[baryon]

Same problem, sometimes in Safari, sometimes in the Facebook chat window, sometimes in Finder. It's random and goes away if I close the window and reopen it.

 

[Olddiverman]

Update

After causing myself another problem while housekeeping I decide to do a re-install.
I haven't had to do one before but it turned out to be surprisingly simple.
However, it didn't cure the graphics problem and, very oddly, removed some of the desktop images in /Library/Desktop Pictures!

 

[ununnilium]

The crazy thing is that I've gotten a nearly pixel-identical screen on my 2011 15" MacBook Pro:

 

[Olddiverman]

No change

Just updated to 10.10.1.
Still the same. Very disappointing.

 

[random123c]

I have exactly the same problem as the 1st picture.

I have a Macbook Pro early 2011.

Since I updated for Yosemite I had a blue screen and couldn't do anything on my macbook.
I brought my macbook to apple and paid over 300$ and they replaced the logic board.

Then it was working well and a week later I had the glitch on the login page so I brought it again to apple and the replaced the logic board again (for free).

Today I have this glitch back on my login page so I'm assuming it's not a logic board problem...

Anyone fixed this problem?

 

[Olddiverman]

Possible solution

Found this on the Apple Support Community posted by 213JB.
Go to ~/Library/Preferences and remove "com.apple.loginwindow.plist".
Works for me so far.

 

[HRazakee]

Found this on the Apple Support Community posted by 213JB.
Go to ~/Library/Preferences and remove "com.apple.loginwindow.plist".
Works for me so far.

I already did that sometimes ago, temporarily fixed.
But what I did next, was disabling Automatic Graphics Switching, and voila, no glitch in Login Screen anymore, nor glitch when some sites asking the dGPU, or profile color change when some apps asking for the dGPU, so safe to assume Yosemite does have a problems with some dGPU, because I never experience such as glitch on Mavericks.. ...

So from weeks ago, I'm on Dedicated Graphics when on Power Adapter, just waiting for my 2011 MBP 15' to get failure just like rest

 

[Olddiverman]

I had already turned off the auto switching. Didn't work for me.
Early 2011 MBP 15inch.

 

[sparky1499]

Hi all

I tried a couple of things to fix this log-in screen issue but the only thing that seems to have fixed it was downloading the OS X 10.10.1 dmg file from somewhere like here, http://osxdaily.com/2014/11/17/os-x-yosemite-10-10-1-update-mac/, and installing it that way.

Since doing this I have no repeats of the issues.

YMMV however.

 

[sparky1499]

and now it's back.

Clean install soon I think.

 

[Olddiverman]

An update from me.
The problem gradually got worse. Screen would suddenly go black with no cursor and had to do a forced shutdown. Or would go plain grey and reboot itself sometimes going into a boot loop. This often many times a day. Eventually after crashing it would refuse to boot (no chime) sometimes for 2 days (!) then would suddenly boot normally and work perfectly for 3 weeks before black screen and crash again.
Long story short phoned Apple last week. Nice chap listened to my story, told me about a repair extension programme and my MB was covered, and today I delivered said MB into my local Apple Store where they are going to replace the logic board F.O.C. Said Nvidia had advised them of a poor batch of graphics cards (!!!) Should have it back in 3 days. This is an early 2011 MBP 15". Fingers crossed.

 

[Yaboze]

Radeongate. All 2011 15's are affected.

https://forums.macrumors.com/threads/booting-a-radeongate-affected-mbp.1722557/

I don't have the issue yet, but when it dies, I'll just get a new MBP, it's already 4 years old. Surprisingly, this machine with a SSD runs very well and is still fast, the CPU benchmarks pretty nicely even compared to newer chips.

Apple has a free repair up until the end of the year I believe.