That's unfortunate. I was hoping to get one of these as an external monitor for an MBP.
I do have to wonder though, you're saying 'Screen scaling with Mac OS' and 'scaling issues on mac' but this is just a monitor, Isn't that "MacOS screen scaling does not work well" and "mac scaling issues" rather than any defect with the device itself?
I bought one, and I'm also upset with how Mac OS handles the scaling.
I've tried absolutely every utility that allegedly makes higher DPI monitors work: BetterDisplay, SwitchResX, EasyRes, and a few other little ones. BetterDisplay makes it sound like they support full resolution with any arbitrary scaling factor. But all of them, at least the ones that did ANYTHING, they only offered the exact same behavior that Mac's built-in display settings offered. They only let me run at a lower resolution. I'm on a 2020 Intel MBP.
Running it at 1920x2160 (just via Mac's built-in settings) is annoying, but it displays things at the correct size and lets me move on with my life. It's still slightly crisper than my old 96 DPI monitor, and the screen real estate + aspect ratio is absolutely amazing for coding.
It's a real shame that neither Mac nor LG has a solution similar to what Windows offers. Hooking the Dualup to my Windows 10 PC, it immediately just worked. Full resolution, 150% scaling, it was the perfect size. Text looks so much crisper on Windows than Mac with this monitor. I've been considering installing some Linux distro for my daily work just to enjoy proper scaling (I figure Ubuntu would offer something similar to Windows).
I was disappointed too. In the end the vastly improved aspect ratio and ergonomics could not overcome the unpleasant screen quality.
While Mac OS has never had an issue with other monitors and scaling replies in my experience, it does for the DualUp. I’m not knowledgeable enough about the various protocols to know if this is Apple or LG’s responsibility, but the end result is not pleasant.
I believe for Apple's rescaling to work properly, it needs to be able to render at 2x resolution on both axes (4x resolution total). So for this 2560 x 2880, it needs a GPU to render internally at 5210x5760. That is 30MP. Can your GPU actually do this?
Are you sure it's not the OS X chroma issue on external displays? It has some bug with the EDID exchange, and doesn't use full chroma - making everything look blurry. There is a way to fix it [1], but it's pretty insane Apple still hasn't fixed this basic functionality.
- The aspect ratio is great when rotated 90 degrees. I really liked having more vertical room for coding and documents.
- Screen scaling with Mac OS does not work well. I’ve been using BetterDisplay to address this but it still suffers from lag, banding and pixelation.
As a result I’m returning and getting a BenQ 32” 4K. If the scaling issues on mac are addressed later on I may revisit it.