New iMac display problem(?) - weird colors and grain
Hello,
I'm a fresh mac user, made the switch this monday (August 27th) when my 24" iMac 2.4GHz C2D arrived. After using it for a while, I noticed a handful of dead pixels, and a semi-bright green stuck one. I thought I'd wait and see how disturbing I would find them before raising an issue about them.
Well, yesterday I decided to make my first backup of the whole system to my external 500GB Lacie drive (connected with FW800) using Super Duper!, which to my understanding is a reasonably sturdy and reliable backup application.
During the first backup iteration I started to notice some alterations in color in the top middle part of the display. I then returned to whatever I was doing (not on the mac, I had no other applications running, just Super Duper!), and after a while took another look at the display. The weird colored area had expanded, and the whole display had become somewhat grainy. Also, the backup process had slowed down quite a bit (from ~30MB/s to ~7-8MB/s).
So I cancelled the backup operation and logged out and back in again. No change. Then I restarted the whole system, which booted just fine, with none of the aforementioned problems. Even the second backup iteration went without problems.
Still, it's a new (and with my budget, quite expensive) computer, and if I get this kind of problem during the first week, I cannot continue using it happily in the fear of these problems reoccurring time and again.
I took a couple of pictures of this, one during and one after the problem. The quality of these are quite lousy, they're taken with my Nokia 9500 Communicator.
During the problem:
http://iki.fi/aita/imac/01notok.jpg
After rebooting:
http://iki.fi/aita/imac/02_ok.jpg
The images are taken in the same light conditions, but from slightly different viewing points. Note: The first image does not present reflections, it's how the screen looked (actually, in real life it looked somewhat worse)
What do you think?
Could this be a driver related issue or have I received bad hardware?
My drivers and Apple software should be up to date (at least OS X informs me that everything is, and I haven't found newer graphics drivers anywhere).
If anyone has had the same or related problems or know how I should proceed with this matter, I would be grateful.
Thank you in advance!
-Aidan from Finland
A few people, myself included, have experienced the same thing. Check these threads: http://discussions.apple.com/thread.jspa?threadID=1082181&tstart=15
http://discussions.apple.com/thread.jspa?threadID=1100912&tstart=30
http://discussions.apple.com/thread.jspa?threadID=1090395&tstart=60
So far the only fix suggested has been to call apple and get a replacement. I'm still.....still waiting for mine to make it slowly across the ocean from China, so I don't know how the new one is working. I'd call Apple and request a new one.
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A tip and workaround for how to get ATI mobility/laptop drivers so that Windows no longer thinks the ATI is a desktop card:
http://discussions.apple.com/thread.jspa?messageID=11286987
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1. Install Boot Camp 3.0 and upgrade to 3.1
2. Uninstall graphic drivers and run Driver Sweeper
http://www.guru3d.com/category/driversweeper/
instead of:
removing the crashing driver by going into windows 7 setup via its install cd and deleting the ati driver manaully
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http://support.amd.com/us/gpudownload/Pages/index.aspx
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+These Steps "should" work:+
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