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Quad thinks there are two displays
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Fresh-Faced Recruit
Join Date: May 2005
Status:
Offline
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So even the guys at AppleCare couldn't figure this one out....
my new Quad with the 7800 video card and it thinks there are TWO displays hooked up when there are not! I have not changed any of the preferences, and we tried deleting several preference and application support files just in case. I have a 23" cinema display and it thinks there is a 1024x768 CRT hooked up to it.
They also had me try to create a new user, but it still had the same problem.
Any ideas?
BTW Fed Ex is the devil and left my quad unsigned for IN THE SNOW for 8 hours until I got home...and when I called to complain they said they did nothing wrong. ugh.
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15" Powerbook G4 1.67 GHz 1.5 GB RAM
23" Display and Powermac Quad G5 2 GB RAM + more soon
4GB white Nano, 20GB 4G
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Mac Elite
Join Date: Oct 2004
Location: Downtown Austin, TX
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Dedicated MacNNer
Join Date: May 2005
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I would get the video card replaced. Maybe it's romp in the snow is causing the problems? Go to your local Apple Store and see what a genius can do  . Sometimes they can order replacement video cards.
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Forum Regular
Join Date: Dec 2002
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Originally Posted by coquidesign
my new Quad with the 7800 video card and it thinks there are TWO displays hooked up when there are not! I have not changed any of the preferences, and we tried deleting several
I had this same problem! I have a Quad running a Quadro FX4500 graphics card and sure enough, the first time I fired it up it thought I had a second monitor. This went away after a reboot.
However, I think the problem was introduced by the fact that I used the migration tool to copy settings over from a prior Mac G4 MDD. I also noticed that my new Quad quickly ramped up the exhaust fans after a few minutes of inactivity.
Eventually, I broke down and reformatted and reinstalled Tiger. Lo and behold ... no problems! I now have a fast and incredibly quiet machine with no glitches.
So, I don't have an answer for you apart from recommending a reinstall of the OS.
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Mac Elite
Join Date: Mar 2001
Location: England
Status:
Offline
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Try swapping the port the display is connected to.
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What the nerd community most often fail to realize is that all features aren't equal. A well implemented and well integrated feature in a convenient interface is worth way more than the same feature implemented crappy, or accessed through a annoying interface.
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Professional Poster
Join Date: Jan 2001
Location: Salt Lake City, UT USA
Status:
Offline
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There's clearly only one thing you can do, buy another display and attach it. 
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2008 iMac 3.06 Ghz, 2GB Memory, GeForce 8800, 500GB HD, SuperDrive
8gb iPhone on Tmobile
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