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Level 1

5 points

Display issues after installing Mavericks

Have an iMac mid 2007 and installed Mavericks. However am noticing areas on the screen where there are moving diagonal lines (the best way I can describe it) and also on certain background colours like light grey there is a horizontal pin stripping effect.

I have reinstalled a clean copy of Mavericks twice and also reinstalled a clean copy of Mountain Lion to check for this issue but no sign of it in Mountain Lion at all.

Have been on to AppleCare and they have had me reset the SMC and PRAM and also repair permissions and repair disk as general troubleshooting but the problem still persists. They have said to try downloading the installer again for Mavericks, which I am currently doing, incase there is something wrong the first copy although installed and works fine on my MacBook.

Just wondered if anyone else had had this issue either using an iMac Mid 2007 with the ATI Radeon HD 2600 Pro 256mb or later model?

I am wondering if it may be something to do with the driver included with Mavericks for my graphics card?

Thanks for any help anyone can give.

iMac (20-inch Mid 2007), OS X Mavericks (10.9)

Posted on Oct 27, 2013 1:23 PM

52 replies

Nov 1, 2013 6:42 AM in response to danthemanuk

i had the same problems on my imac. i could solve it by going to system preferences -> displays -> color. there i unchecked "show profiles for this display only" and chose the sRGB profile.

gerymca

Level 1

0 points

Nov 1, 2013 6:48 AM in response to matthias86

Hi Matthias86, I tried what you said, but I did not work, plus I have two sRGB profiles and the make my screen blueish.

Any other ideas?

Nov 1, 2013 6:57 AM in response to gerymca

hi gerymca!

you could try this:

1. download one of the profiles provided here: http://www.color.org/srgbprofiles.xalter

2. copy this profile to /System/Library/ColorSync/Profiles and choose it via system preferences

Nov 1, 2013 7:05 AM in response to danthemanuk

tried the profile solution, but do not really fancy the blue tint

silver76

Level 1

5 points

Nov 1, 2013 7:24 AM in response to danthemanuk

danthemanuk, as you suggested I contacted apple care. they said to me to create another admin account and try... naturally it didn't work... then they said to take my imac to an apple store to verify any hardware issue..

we all know it's impossible that all of us have the same hardware issue started after mavericks installation...

so... let's hope apple will patch this as soon as possible!

regards

danthemanuk Author

Level 1

5 points

Nov 1, 2013 12:06 PM in response to silver76

Hopefully this will be something they can patch. I might be going over an Apple Store next Sunday and will take my iMac so they can have a look. After I had tried the troubleshooting and other people started reporting issues on this discussion, the AppleCare rep said they would actually need to see the problem first hand so they could investigate it further. There is only so much they can do via the online chat and the original thought of it being a hardware issue related to my iMac is probably incorrect.

For those who mentioned changing the profile - I have tried that and although it does make the problem less visible it makes the image on screen look horrible with the tinting etc.

I have also tried the calibrate display option but again no luck with that.

I still think it might be something to do with the ATI driver they are using in Mavericks.

danny264

Level 1

0 points

Nov 1, 2013 1:41 PM in response to danthemanuk

same issue here!

mid 2007 iMac

2.4 GHz Intel Core 2 Duo

4 GB 667 MHz DDR2 SDRAM

ATI Radeon HD 2600 Pro 256 MB

brrrzz

Level 1

0 points

Nov 4, 2013 4:44 AM in response to danny264

I own exactly the same mid 2007 iMac and have this issue too!

silver76

Level 1

5 points

Nov 4, 2013 7:23 AM in response to brrrzz

I think everyone of us should contact apple care to make them know that this issue is affecting a large part of consumers

enryfox

Level 1

16 points

Nov 4, 2013 10:18 AM in response to danthemanuk

Same problem on an iMac 2007 (ATI Radeon HD 2600 Pro); changing color profile only makes the problem less visible but it does not fix it and the blueish tint is rather horrible. As far as i remember, our iMac's have a low quality LCD display with a real colour bit depth of 6 bit and the apparent 8 bit color depth is obtained via dithering. Can it be a dithering issue ?

bye

danthemanuk Author

Level 1

5 points

Nov 4, 2013 11:30 AM in response to silver76

I agree with silver76 - the more of us that contact AppleCare the more likely it will be that this issue will get picked up and hopefully fixed.

You can do what I did and use the chat support even if you are out of warranty. Just request an exception to the usual one off fee for support. I also sent them a link to this support thread in the hope they might take a look.

Hopefully I will be taking my iMac to Apple Store this weekend for a Genius to have a look at so will keep you all posted.

davicf

Level 1

0 points

Nov 11, 2013 8:44 AM in response to danthemanuk

This is also happening to me with a ATI Radeo 2400 on an iMac mid 2007. Playing around with color profiles does not really fix the problem. Depending on which gray the screen is displaying the wave effect is very strong.

Cruniac

Level 1

0 points

Nov 11, 2013 5:13 PM in response to danthemanuk

Having the same problem as well.

markd475

Level 1

0 points

Nov 13, 2013 11:56 AM in response to danthemanuk

Hi everyone thank god i found this thread i've got the same problem mid'07 iMac

ATI Radeon HD 2400 XT 128 MB I realy there is a solution, though I only find the patterning slightly anoying I don't want to go back to Lion as my MAc seems a lot snappier. (I was having some major Beachball problems).

Nov 13, 2013 1:10 PM in response to danthemanuk

Same problem here Mac Book Pro, 17-inch, mid-2010, NVIDIA GeForce GT 330M

Display issues after installing Mavericks