Q: OSX Lion, Graphic Artifacts

I also am experiencing graphic artifacts but only while using Safari. These artifacts appear when I am going into Top Sites and only lasts for a fraction of a second. The actual appearance of the artifacts changes. Sometimes it appears as a mostly gray screen with streaks in it. And sometimes it appears as a distorted version of the screen I have just left.

It happens all the time I am going into Top Sites, regardless whether I have just started my day i.e. the computer is cool, or 10 hours later when the computer is hot.

I have a 27 inch iMac from early 2010.

  System 10.6.8

  Model Name:          iMac

  Model Identifier:          iMac11,1

  Processor Name:          Intel Core i5

  Processor Speed:          2.66 GHz

  Number Of Processors:          1

  Total Number Of Cores:          4

  L2 Cache (per core):          256 KB

  L3 Cache:          8 MB

  Memory:          8 GB

  Processor Interconnect Speed:          4.8 GT/s

  Boot ROM Version:          IM111.0034.B02

  SMC Version (system):          1.54f36

Hopefully our different stories will help Apple comprehend and fix the problem.

Joe

I forgot to mention in the posting above that I am using the last Snow Leopard as my system, and the latest version of Safari. This is version 5.1 and is supposed to be Lion ready.

Thanks again

Joe

Maybe I will get it together and get all of the information down in one post. I also forgot to mention that this problem only started after I updated Safari to the 5.1 version.

Joe

SteveDSD

I'm pretty sure it's not heat related at least in my case, even if I run the fans at 100% and temp is 30C, finder is still producing these strange artifacts, but so far I have only seen these artifact in finder and nowhere else.

Just to confirm that it's a wide-spread issue which has to be fixed, the same thing happens on my MacBookPro7,1. I'll try to provide more details once it happens again.

It seems like a software/driver issue to me since multiple people are having what appears to be the same issue on different machines. 

However, once I installed SmcFanControl I have not had any recurrance of the problem.  ???

Happens to me too

http://i.imgur.com/Wgkus.png

http://i.imgur.com/YxvwS.png

iMac 27-inch, Mid 2011, 3.4 GHz Intel Core i7

I am having the same issues with my 2011 iMac 27inch i5 3.1Ghz 6970m 1GB. The pictures Sir Doyle posted is similar to what I get. I did not have these issues with Snow Leopard.

SmcFanControl did not work for me.

same problem here with my new 27 imac i7 3,4:
I called apple care... they told me to send back my iMac and I get a new one...

here in Germany I have the same Problem on my brand new 27" iMac....please Apple fix that with the flash ****....but next time before release

I don't think that's a software problem....

I'm experiencing similar problems, however it only happens in finder when I try to scroll, here is a screenshot:

iMac 27, 2011 with AMD Radeon HD 6970M 1024 MB

ps: it happens even when the mac is stone cold.

--> having exact the same problem: go for apple care... they will replace your mac

Exact same issue here, iMac 27" mid 2011 with AMD 6970 2048 MB.

Artifacts on the menu bar, dock and dashboard.... I hope this will be fixed in 10.7.1.

Same issues here. 27" iMac mid 2011 w/ AMD 6970 2GB.

Going to wait for 10.7.1, really hope they fix it. I really don't want to have to send the whole iMac in for replacement...

Also, with the issues mentioned above, I have strange verticle lines through the whole display sometimes. They usually disappear after a bit.

Also, during video playback the lower half of the screen glitches out and ends up being a few seconds behind the upper half?

And one more thing... During startup, my computer seems to hang for about 10-15 seconds at the grey screen before the Apple logo appears.

PRAM reset doesn't help, nor does unplugging for ~10-15 seconds.

Called Apple Care, they said to reinstall Lion. This didn't help either.

I think it has to be a software issue since it appears in screen grabs, but I could be wrong..