Hello, I have recently purchased a Mini display port to VGA adapter for my 27" imac mid-2010, Captain OS, and it didn't recognize my new monitor,not even using detect button from the display of system preference, I have try to run the DP to VGA updater from utilities but just a warning message pop up asking me to connect the adapter and the monitor.
Any ideas?
Thx in advance.
iMac, OS X El Capitan (10.11.1)
Your adapter may be defective. Not all adapters are created alike so please return the one you bought, I have found that MonoPrice provides pretty good products. You can also look on Apple's online store for the product they recommend.
Is not a adapter problem, it should be a software problem I recently create a virtualization of windows 7 and in the monitor option I see second screen and says: show devices in VGA, anyway it didn't work in the virtualization either, but if windows is able to detect that is a VGA adapter, it should be a adapter problem.
OK if you feel it's software I can't really help you sort it out, Apple is very clear how to connect an external display in OS X: Using multiple displays in Mavericks - Apple Support. Try another adapter as suggested and if both pose an issue then you likely have a software issue to overcome.
Problems recognizing a second monitor
