1
vote
1answer
611 views

Why isn't my external monitor's native resolution available in Display Preferences?

I have 22" external monitor that has a native resolution of 1680 x 1050. When I open the display preferences I don't get it as an option. I've tried rebooting. That didn't help. I have the ...
1
vote
0answers
539 views

Automatic “detect displays” not working when plugging in Mini DisplayPort

Some time ago, the automatic detection of external displays stopped working when plugging in a display via Mini DisplayPort to my 13", late 2011 Mac Book Pro with Lion installed. This is regardless ...
4
votes
1answer
4k views

How can I force specific HiDPI modes?

I have a 13" MBP (Early 2011) plugged it to a Dell U2711 monitor via DisplayPort. I have successfully enabled HiDPI mode, using Quartz Debug the problem is that the screen won't run at the HiDPI ...
5
votes
3answers
1k views

When my external display is on, my Mac thinks it's off. When it's off, on

Hardware details: MacBook Air, Mac OS X Lion 10.7.2 Mini DisplayPort to HDMI Adapter Standard HDMI cable Famous Maker 23” Ultra-Slim LED Display, 1080p Yesterday everything worked fine. Today when ...
1
vote
1answer
819 views

Daisy-chain non-display port displays

I have a Mac Mini (Mid 2011) running OS X Lion with two monitors currently hooked up to it. One is a DVI monitor (it also supports VGA) and the other is VGA-only. The DVI monitor is currently hooked ...
3
votes
0answers
2k views

After Lion upgrade, external monitor sometimes shows color noise [closed]

Hardware: Early 2011 (pre Thunderbolt) MBP 15" Apple Mini Display to DVI adapter Dell 2408WFP (using included DVI cable) Before upgrading from Snow Leopard to Lion, I did not have this problem. ...
3
votes
1answer
886 views

How do I troubleshoot a lockup that occurs when plugging in an external monitor?

Since installing Lion, nearly every time I plug my 13" MacBook Air into my 27" Dell display, the Mac locks up. (The mouse pointer stops moving.) I can't do anything except shut it down and reboot. ...