U4025QW, Apple OS, support issues

For #5, it's the chip that doesn't support 120Hz. I have the Mac mini with the M2 Pro chip, and it does support 120Hz. The specs for the regular M2 chip top out at 60Hz at 4K/5K/6K, while the M2 Pro is 240Hz at 4K or 60Hz at 8K.

Why Dell just doesn’t enable 100/110 in the driver for non pro M versions. It is just simple EEID config that Dell can include out of the box.  

DDPM is really annoying. It also asks me for a consent every time I start the app, which is just ridiculous. And it takes ages until the settings are usable. During that time, the whole app blocks any input. And the worst thing is the missing volume support. Which is even worse since the monitor itself does not seem to have a volume control. I downloaded Better Display now (thanks for the hint). It is able to control the volume, but not with hardware keys like on my Microsoft Natural Keyboard, which I have connected to my Mac. It only works using the menu.

Thanks @derwaldgeist​

MonitorControl is indeed allowing me to control the brightness & speaker volume on my U4025QW with the standard Apple Keyboard shortcut keys.

Appreciate the tip.

Today my U4025QW monitor was delivered and I had great expectations from this Dell top of the line monitor, based on all the raving reviews. Unfortunately I experience the same problems with volume controls, DDPM, greyed-out controls, etc. I am running MacOS 15.0.1 (24A348). Honestly, for a monitor in this price range, this is unacceptable. The screen is perfect, but with no way of having control over it, this is a real showstopper and a waste of an otherwise perfect monitor. 

I have spent countless hours with  Dell's customer support and  trying to ge this DDPM software to work on my Mac OS environment. I got working after many hours of trying it, and broke once I updated the OS version again. DPPM is slow, buggy and unpredictable! I finally gave up when I found DisplayBuddy for Mac that works without a problem. Dell should be ashamed of issuing a software that does not work or breaks at any moment without any apparent reason. If I could return my U4025QW display now, I would do in a heartbeat. Is not worth the money Dell is asking for. If you are considering buying this device, I would recommend you do a lot of due diligence first. The display and its software are half baked products! 

Forgot to add on my prior posting,  another problem I found when changing input from Windows HDMI to Thunderbolt Mac OS, is that the display starts flickering all over, and I have to reboot the Mac Display M1 Max to fix it, ...another "feature" of this monitor that I started considering replacing even if I loose money 

@MRemme​ try DisplayBuddy $20 that fixed all my DDPM problems, now , dealing with a new one with flickering 

@derwaldgeist​ 

not a solution for refresh rate issue

@flexxconrado​ What excactly do you mean by "refresh rate"?

If this refers to flickering: My first monitor had a severe flickering issue as well. It turned out that it was broken, so I got a new one which works without issues since.

Another interesting side fact: Dell did not want to get the broken monitor back and said something about packaging issues. So I took the monitor out of its packaging, and I realized why: Just by placing it back into the original (!) packaging, the monitor got damaged. It showed weird stripes on the screen. And I was very, very careful when placing it back. I packaged it a second time, and when I later tried it out again, the stripes became really, really big. It seems as if the whole monitor had a quality issue. And I really, really hope this won't happen to my new one when I move somewhere. I had another Dell before which is way over 10 years old and still works till today.