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spamurai

macrumors member
Original poster
Mar 23, 2012
45
2
England
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:

AtAOWBZ.png

Rnwivpv.png

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

Has anyone else seen this?

What can I do?
 

Olddiverman

macrumors newbie
Oct 24, 2014
14
0
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

macrumors regular
Oct 5, 2008
235
64
Glasgow, UK
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)
 

baryon

macrumors 68040
Oct 3, 2009
3,903
2,972
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

macrumors newbie
Oct 24, 2014
14
0
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

macrumors newbie
Nov 6, 2014
1
0
The crazy thing is that I've gotten a nearly pixel-identical screen on my 2011 15" MacBook Pro:
 

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random123c

macrumors newbie
Nov 18, 2014
1
0
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

macrumors newbie
Oct 24, 2014
14
0
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

macrumors newbie
Dec 17, 2014
5
0
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

macrumors newbie
Oct 24, 2014
14
0
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.
 
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