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You are here: MacNN Forums > Software - Troubleshooting and Discussion > Mac OS X > Is 10.5.5 consistently not working with external displays?

Is 10.5.5 consistently not working with external displays?
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Mac Enthusiast
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Sep 16, 2008, 06:42 PM
 
I've read on two Apple Discussions threads that external displays cease to work when users upgrade to 10.5.5, including Apple's own Cinema Display. I have a 20" Apple Cinema Display connected to a PowerBook G4/1.67 Ghz. Are upgraders to 10.5.5 consistently seeing this problem, including with Apple's displays?
(Last edited by Le Flaneur; Sep 17, 2008 at 06:54 AM. (Reason:added information about host computer))
     
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Sep 16, 2008, 08:30 PM
 
No problems so far with the external Dell display attached to my MacBook.
     
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Sep 16, 2008, 08:40 PM
 
I encountered an issue today with my Dell 20" LCD connected to my MBP C2D. I woke up the computer for the first time after installing 10.5.5 and it didn't auto-wake or auto-recognize the LCD. Never had this problem before. The MBP's screen was fine though, so I went in to system prefs > displays and chose 'detect displays'. After that, it recognized the external. I'll put it to sleep again tonight and will just have to check to see if the issue repeats.
     
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Sep 17, 2008, 02:00 AM
 
The two 23" ACDs I have hooked up to my MBP are working as good as always with 10.5.5.
     
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Sep 17, 2008, 02:26 AM
 
No problems with my two 20" Cinema Displays hooked up to an 8800GT.

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Sep 17, 2008, 06:17 AM
 
Portables with external displays hooked up need to re-detect displays. This needs to be done only once.
Wojtek

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Sep 17, 2008, 06:53 AM
 
Originally Posted by hwojtek View Post
Portables with external displays hooked up need to re-detect displays. This needs to be done only once.
This apparently doesn't work for some people with MacBooks (with 4GB of RAM?).
     
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Sep 17, 2008, 07:40 AM
 
Originally Posted by Le Flaneur View Post
This apparently doesn't work for some people with MacBooks (with 4GB of RAM?).
While that may be true for *some* people, I happily report that my 23" ACD is functioning just fine attached to my 2.2 GHz MacBook with 4GB of RAM and running OS 10.5.5 . It also works fine attached to a 15" MBP with 4GB installed, also running 10.5.5. (Needless to say, the portables are not connected to the ACD at the same time. )
     
   
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