960 x 600 HiDPI won't work

[dsemaya]

I have an HP Z24i Display with native resolution of 1920 x 1200. I want to run it as 960 x 600 in HiDPI. Selecting that option from the menu does nothing. The menu doesn't even update to reflect that I've selected that options. Most other HiDPI options work, such as 1280 x 800, 1280 x 720, 840 x 525, etc. It seems that only 960 x 600 and 960 x 540 refuse to work.

Any idea what's going on here? I'd really like to use 960 x 600 since that's best for this display.

Thanks.

[avibrazil]

I don't know. I didn't write this code, just organized for packaging and distribution.
It is also quite old code that requires some updates. In my 2015 retina display it works with external displays, though.