3840x1080 no HiDPI - Macbook Pro M2

[patryk-matis]

Monitor - odyssey g9 oled 49" - native res: 5120x1440
thunderbolt - DP

When selecting 3840x1080 and pressing HiDPI - it falls back to 2560x1440.

I've read in similar discussions that M2 supports up to 3840 HiDPi so I'm not sure what's wrong

[waydabber]

here 3840px is non-HiDPI. But yes, M2 Pro should support 3840px HiDPI over USB-C, but probably at lower refresh rates (not 240Hz) due to a framebuffer pixel clock limitation.

[patryk-matis]

Even on 60Hz, it's not there:

[patryk-matis]

with 3840x1080 hidpi enabled - is it normal that display reports 5120x1440 resolution?
Macbook reports 3840x1080 ofc, but even what I switch between this 3840x1080 to 5120x1440 display does not even blink - looks like it just changes scaling

[patryk-matis]

Figured it out:
Default resolution was marked as 2560x1440.
I edited native resolution to 5120x1440 - since it's real native resolution of the display.
After that, it appeared:

[waydabber]

Oh, right, that might have been a cause. I should have pointed out that the native/default resolution seems wrong on the original screenshot, but missed it somehow. Thanks for pointing it out!