LG Dual / SDQHD

[kenhan]

I have LG Dualup monitor with native 2560x2880 resolution. Everything is so small, so I set it to 1280x1440 in BetterDisplay. Now everything is sized better, but everything is a little fuzzy. Now when I turn on High Resolution (HiDPI) in BetterDisplay, the texts look super clear but the screen resolution changes to 1680x945 with huge black bars both above and below the screen. How can I keep 1280x1440 resolution and still use HiDPI? Is that possible?

[waydabber]

Depending on the Mac model and macOS version used it should be possible, yes. Did you try enabling flexible scaling?

https://github.com/waydabber/BetterDisplay/wiki/Fully-scalable-HiDPI-desktop

[StackTc]

my macos system is Montery, I find i can't use the resolution sliders in the app menu to scale the desktop.
so i must upgrade my system ?

[StackTc]

my system version is 12.7.5

[waydabber]

It is always a good idea to run the latest macOS version imho. Still, you should see a resolution slider in the app menu even on Monterey.

[StackTc]

I can only choose
2560 * 2880
1920 * 1440
1920 * 1080

[StackTc]

I have another mac studio m1 max the system is the newest, and i can adjustment.

but in this m1pro, Monterey I can only choose
2560 * 2880
1920 * 1440
1920 * 1080

so what can I do just Enlarge a little bit

[StackTc]

I don't want to upgrade the system because doing so might make the computer lag. I'll only do it if it's absolutely necessary and see if it's a system issue.

[StackTc]

[StackTc]

[waydabber]

Oh, it looks like the display is not natively connected. You probably use a displaylink dock or something similar. With that flexible scaling can't be enabled. Try connecting the display directly to your Mac.

[StackTc]

You're right. I'm using displaylink. If I link directly, it's indeed very convenient to modify the resolution. I have two problems now

1. If I use displaylink, since my m1pro is connected to three screens, you know that the m1pro can only be connected to three screens through displaylink. Is there any way to modify the resolution? For example, I want to change it to 1920 * 2160

2. I found that I can now change the resolution, but I can't select HIDPI. Clicking on it is invalid.

[waydabber]

Make sure you enable flexible scaling for the display. Some HiDPI resolutions might not work with the LG DualUp due to the variying resolution limits on some Apple Silicon Macs. With displaylink you can create a virtual screen with flexible resolutions and mirror or stream them to your real display as a workaround.

[StackTc]

which size shoose I choose? thank you very much.

[StackTc]

my monitor is LGMQ280 size is 2560 * 2880

[StackTc]

Forget it. The virtual screen solution seems quite troublesome. Thank you very much.