Cannot enable 16:9 HiDPI resolutions (in 10.15 Catalina) / 无法激活任何16:9比例的HiDPI选项

[T1nyeyes]

I executed this
sudo mount -uw /
before injecting two more 16:9 HiDPI 1600x900 and 2000x1125 resolutions. After rebooting, both 2 new options were available in the RDM, but I could not enable these, and any of the 16:9, e.g. original 1920x1080, options (by that I mean clicking on the 16:9 option it still stays on the current option).

在执行之前，用了这个操作
sudo mount -uw /
尝试加入了1600x900和2000x1125这两个16:9的HiDPI分辨率，重启后打开RDM可以看到新加入的两个选项，但是点击后还是停留在之前的选项上（包括自带1920x1080在内的所有16:9的分辨率）。

Catalina 10.15.3
Intel Iris Plus Graphics 645 1536 MB
BenQ PD2500Q 25inches (2560 x 1440)

[T1nyeyes]

Update:

For those encounter similar issue and "getting yourself a 4k monitor" is not your solution, my way of sorting out this was to downgrade your Mac to 10.14 Mojave and install SwitchResX (as when it was in 10.15 SwitchResX seemed also useless).

如果有遇到同样问题但是不能通过“买一台 4k 显示器”来解决的话，分享我的解决方法：降级到 10.14 Mojave 并且安装 SwitchResX（因为在10.15下用 SwitchResX 同样不能解决这一问题）。

[qianbinbin]

参考一下这个
https://binac.io/2020/11/08/a-workaround-to-bypass-rdms-failing-to-switch-to-some-hidpi-resolutions/