Is it possible to make LoDPI resolutions HiDPI without using a Dummy?

[brady-sewall]

I have a 13" M1 MacBook Pro hooked up via Thunderbolt to a LG 34" Ultrawide 5K2K display.

In the MacOS Display Settings, I see the following options

• 1536 x 648
• 1997 x 842
• 2560 x 1080 (a bit too big)
• 5120 x 2160 (way too small)

BetterDisplay lets me run HiDPI at additional resolutions up to 3027 x 1296 which is definitely better! Ideally, I want to run it at 3200 x 1350 and BetterDisplay lets me do this through a dummy. However when I do, I start having lots of mouse related issues (mouse disappearing, mouse jitters, etc.).

Is there a way to run 3200 x 1350 at HiDPI without a dummy?

[waydabber]

Hi there, it is only possible with M1 Pro/Max/Ultra. With the entry level M1 and M2 the maximum native HiDPI width is limited to 3072px currently in macOS, so you need to use a dummy, there is no other known way as of now.

[brady-sewall]

Ah, gotcha. Thanks for the info. I'm still on MacOS Monterey (12.6.1) because my work isn't allowing for updating to Ventura yet. Any idea if the mouse issues when using a dummy are still present in Ventura?

[waydabber]

Yes, they are, just tested recently. :( You can somewhat fix some of the issues by marginally increasing the mouse cursor size, but that does not solve all issues.

[brady-sewall]

Hi there, it is only possible with M1 Pro/Max/Ultra. With the entry level M1 and M2 the maximum native HiDPI width is limited to 3072px currently in macOS, so you need to use a dummy, there is no other known way as of now.

Hi there, is this still the case with M3 MacBook Pros? Just got a new one and my 5K2K is still stuck with a max width of 3072px.