Hi,
I also have a P3421W purchased recently and tried everything I could find online but still can't get it to display HiDPI. It works in the standard resolution for it which is 3440 x 1440 but the fonts and windows are too small for me.
Plus sharpness (edges around the font) also bothers me.
Laptop is a 2018 4TB MBP.
I also have a 2020 4TB MBP with an 32" non ultra wide LG and when I go to Preferences > Display > Scaled it shows me this....
View attachment 1811066
while on the Dell ultra wide P3421W it shows me a list of resolutions (even with holding Option while clicking it).
Any tips on fixing the Dell one? If not I'll have to take it back... can't stand the small windows and fonts plus bad sharpness, hurts my eyes.
Thanks!
PS. If I take it back, do you think a 2k monitor is enough to display HiDPI (use it like a Retina one) or do I need 4k monitor? Thank you!!