• Is SwitchResX compatible with Yosemite ?
    SwitchResX 4 is compatible with Yosemite beginning with version 4.4.1. Older versions may also work, but may exhibit some compatibility problems. Versions 4.4.1 and above are tested on Yosemite.
    There are however some compatibility problems on Yosemite when disabling a display (see this section of the FAQ)