How do I get the full resolution from a 2560 x 1080 LG 29" monitor on my MacBook Pro running OS 10.9.5? I've purchased the necessary HDMI adaptor for the laptop, but don't have the option of selecting 2560 x 1080 in my System Preferences.
Mac Pro, OS X Mavericks (10.9.5), none
Hello there, Hopeless.
It sounds like you are unable to select the desired resolution on your external display when running OS X Mountain Lion. The following Knowledge Base article offer some great recommendations for troubleshooting:
OS X: How to use multiple displays with your Mac in Mountain Lion and earlier
Additionally there is a great tidbit of information in this article as well that you might find useful:
Get more resolutions for your external display
You can see more resolution options for your external display by holding down the Option key while clicking the Scaled button.
If you're using OS X v10.7 Lion or OS X v10.8 Mountain Lion, this is only available in extended desktop mode.
Thanks for reaching out to Apple Support Communities.
Cheers.
29" LG 29UM68-P monitor
