I use an external monitor with my Macbook Pro (2015 edition) both at work (Dell 2407WFP) and at home as well (Planar PLL2410w). When I first got the Planar monitor at home, it worked fine and looked very nice at a 1920x1200 resolution. This is the same resolution I use at work.
However, nowadays, when I regularly use the work and home monitors, the resolution on the Planar monitor at home is a lot lower. The 1920x1200 option doesn't even display in the list of Scaled resolutions, even when I option-click. The highest resolution I can get is 1920x1080.
Has anybody dealt with this before? Or know how to fix it?