Help! DVI to VGA Adapter freeze mein Mac

Hallo, ich have yesterday bought a DVI to VGA Adapter. I connect my Macbookpro 15 to my PC Monitor a NOKIA 446Xpro Multigraph.
Everything looks fine, but when everytime my Mac goes to sleep mode and back to activ again it said no Signal and my Mac Freeze. Everything just don´t move.. Everytime this happen i have to test the Harddisc and repair it.
It´s happen only when i connect my Nokia Monitor. Could someone help me what i should do? Is there some Software for my Monitor?
thx

There is a very long thread on this topic here:
http://discussions.apple.com/thread.jspa?threadID=1058380&tstart=90
The topic has mostly become quiet since 10.5.1 because that seems to have fixed most people's issue. But I see you are already running 10.5.1 so that is not helping in your case apparently. You might try reading the above thread backwards from the most recent posts to see if you get any other ideas for a fix. Good luck.

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Thank you, Mark,
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if your Mac monitor has Thunderbolt ports, and the PC monitor is on the end of the daisy chain, then you might be able to do it by connecting your PC monitor’s VGA cable to a Mini DisplayPort-to-VGA adapter (e.g. Apple, NewerTech), connecting that cable’s Mini DisplayPort end to one of the Mac monitor’s Thunderbolt ports, and then connecting a Thunderbolt cable between the other port on the Mac monitor and your MacBook Pro.

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http://docs.info.apple.com/article.html?artnum=301345
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http://support.apple.com/kb/HT1573

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Allan Jones wrote:
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Hello mshameel,
It may help to reset your system's SMC and NVRAM.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
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http://support.apple.com/kb/HT1379
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Hi DoDolom,
First, welcome to Macintosh!
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Can someone tell me the Apple part number for the DVI to VGA adapter that came with a Macbook Pro model A1260? (Early 2008)
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You have a MacBook Pro 15" Early 2009 (MacBook Pro 4,1)
The Mac's port is a Dual-link DVI (VGA, Composite and S-video with adapter)
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http://eshop.macsales.com/item/Micro%20Accessories/DVIVGA/
You also can search the Apple store online for the part, but it's so basic and simple that paying more for Apple's version is just for looks.

Help! DVI to VGA Adapter freeze mein Mac

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