I just upgraded OS X from 10.7 to 10.8.
While using 10.7 with an HP Compaq LA2405wg external monitor connected via Mini DisplayPort to VGA adapter, I was unable to set this monitor's native resolution of 1920x1200, because it was not listed in OS X's
System Preferences > Displays.
After scouring forums and SE sites, I found the application SwitchResX. With this application I was able to install a custom resolution, and then I was able to use this external display at 1920x1200 without issue for almost a year until I upgraded OS X.
After upgrading to 10.8, my custom resolution was lost. Again, the 1920x1200 resolution is not listed in OS X's
System Preferences > Displays. The highest resolution I can use (with correct ratio) is now 1440x900, which is the same as the LCD screen on the MBP.
So I fired up SwitchResX to re-install the resolution, but I am now being nagged about my trial time expiring. When I select my display on the left hand side of SwitchResX, and open the
Custom Resolutions tab, I see my resolution listed, but it always says
Not installed under the
Since this exact same hardware configuration worked under 10.7 (with the help of non-free third-party software), it seems like I should be able to get 1920x1200 from 10.8 as well. The only software workaround I knew (SwitchResX) has expired.
Is there anything I can do with OS X to reclaim my monitor's native resolution? Or do I really have to resort to purchasing third-party software to support this seemingly common resolution?
OS X 10.8.4, Intel Core i7, 4GB DDR3 RAM, AMD Radeon HD 6490M 256MB
Edit - Bounty Details:
I have Apple's Mini DisplayPort to VGA adapter. Their knowledge base entry about supported resolutions and refresh rates here:
And the native resolution and refresh rate for my monitor is 1920x1200 @ 60Hz. You can view the manufacturer's product page here:
For detailed diagrams covering various methods of shoelacing, please refer to the following site: