Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Graphical issues with 2011 iMac and Lion

I have a 2011 27" iMac (core i7 and AMD Radeon HD 6970M 2GB) with 2 external displays, most of the graphical issues are present in the external displays but the menu bar, dock and volume popup all appeared distorted on the main display.

On the external display most apps look like this http://i.imgur.com/FQ0AJ.png

there are a few exceptions like steam, safari and itunes, these apps don't show any distortion apart from when being switched the the other displays though, almost all other apps apear disdorted (as shown in the image) on the external displays.

I never had these issues with Snow Leopard but as far as I can tell its some kind of graphics driver problem, don't know how this wasn't spotted in the beta..



More images:

http://imgur.com/bK3jBl&RSaix

http://imgur.com/bK3jB&RSaixl

iMac, Mac OS X (10.7)

Posted on Jul 22, 2011 9:06 PM

Reply
194 replies

Jul 27, 2011 8:54 AM in response to JoshS182

Confirming that I have this issue too. It seems to crop up randomly. Today I was reading an article online and when I went to check my Dashboard, it had it, When I went back to my desktop everything was fine. Dashboard had this graphical issue though. A few days ago I had the problem on my external monitor and once on my primary built-in iMac monitor.

Jul 27, 2011 10:57 PM in response to JoshS182

Strange enough I too am experiencing all of the same symptoms that everyone in this thread is experiencing... my macbook pro 13" (2009) hasn't had it happen.


but my 27" iMac Core i7 w/ AMD 6970M 2GB, 16GB RAM has this problem. it's happened 3 times. in the past 3 days. (twice today)



side note, my iMac also has kernel panicked twice first time having a kernel panic since OSX Tiger. :$

Jul 27, 2011 11:09 PM in response to JoshS182

I also have a 27 in iMac Core i7 3.4 with the 2GB Graphics Card.


I called apple care and informed them + I recorded a video of it happening with ScreenFlow and sent it to apple. Please call apple care and inform them so they escalate this issue.


When I called them they sent me a file to Capture the Data of my computer to see what happened and what caused it.


By the way this computer should be able to connect with 6 screens simultaneously.


Please if you are experiencing this issue write here to inform apple about and call apple care or see the genius bar.


Thanks

Jul 28, 2011 12:47 AM in response to Resta

Not limited to the 2GB 6970m.

I have a 1GB 6970m installed in mine and I still get these isses


Here's what my desktop looks like right now:

http://cl.ly/2d2o17192i3O3M3B0g2N


Here's what my menubar looks like in fullscreen apps:

http://cl.ly/132i36030J1m1v3U1E1w


27" iMac with i7 @ 3.4Ghz, AMD Radeon 6970m 1GB, and 16GB RAM (self-installed, but that shouldn't matter).

Graphical issues with 2011 iMac and Lion

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.