Q: Connection to monitor suddenly seemed to stop working.

About a month ago I was connecting my MacBook to an 15" LCD monitor (hp w1858) using a mini display port to VGA adapter and it was working great.
Later, I then connected the mac to a large HDTV (with some resolution difficulty) to give a presentation. When I went back to hook up the LCD, my Mac seemed to not recognize or "see" the monitor, even when I use the Detect Displays command.
It is not just this monitor, but also projectors that It will not recognize.

I just recently went to the site and downloaded the 10.6.7 Composite update... no luck.

Any help?
Thanks

MacBook Pro, Mac OS X (10.6.7), Nope

Posted on Apr 13, 2011 6:43 AM

I have this question too

Q: Connection to monitor suddenly seemed to stop working.

All replies

Helpful answers

by BSteely,

BSteely Apr 13, 2011 11:06 PM in response to Thepizza
Level 5 (7,635 points)

Apr 13, 2011 11:06 PM in response to Thepizza

Try moving com.apple.windowserver.plist to the Desktop and restarting to see if that helps. You can find this file in Macintosh HD/Library/Preferences.

You may also have to move com.apple.windowserver.xxxxxxxxxxxxxxx.plist to the Desktop as well. You can find that file in your user account at:

YourUserAccount/Library/Preferences/ByHost

If that doesn't work, just put the files back in their original location.
Reply options

Link to this post

by Thepizza,

Thepizza Apr 14, 2011 6:51 PM in response to BSteely
Level 1 (0 points)

Apr 14, 2011 6:51 PM in response to BSteely

Still nothing... but thanks.
Reply options

Link to this post

by BSteely,Helpful

BSteely Apr 14, 2011 9:52 PM in response to Thepizza
Level 5 (7,635 points)

Apr 14, 2011 9:52 PM in response to Thepizza

Could it just be that the adapter has gone bad? Maybe a wire is broken inside of it.
Reply options

Link to this post

by Thepizza,

Thepizza Apr 14, 2011 11:11 PM in response to BSteely
Level 1 (0 points)

Apr 14, 2011 11:11 PM in response to BSteely

I'll go see if I can borrow one from somewhere.
I didn't think it would be the problem because my laptop refreshes the screen (like something may happen) whenever I unplug it... But who knows?

Thx
Reply options

Link to this post

by Appaloosa mac man,

Appaloosa mac man Apr 27, 2011 3:23 PM in response to Thepizza
Level 5 (4,330 points)

Apr 27, 2011 3:23 PM in response to Thepizza

What options have you explored in the system preferences?
Reply options

Link to this post

by Lanny,

Lanny May 5, 2011 1:45 PM in response to Thepizza
Level 5 (7,972 points)

Desktops

May 5, 2011 1:45 PM in response to Thepizza

Keep in mind that this only works if the laptop is powered by the AC adapter. It will turn off if the laptop is on battery power.
Reply options

Link to this post

Q: Connection to monitor suddenly seemed to stop working.

All replies Helpful answers

by BSteely,

by Thepizza,

by BSteely,★Helpful

by Thepizza,

by Appaloosa mac man,

by Lanny,

All replies

Helpful answers

by BSteely,Helpful