I still can not fix this issue. I have dell adapter USB-C to HDMI but I only get 2195X1235 resolution.
The graphic platgforms shows 3840X2160- 60Hz.
Are there eny new upgrades to solve this issue?
Are you sure that your USB-C adapter supports HDMI 2.0, which is required for 4K @ 60 Hz? Not all USB-C to HDMI adapters do. Someone else came here asking a question like this a while ago and posted a link to the adapter they bought. The adapter specifically said it was good up to 1080p, and I found a link to that manufacturer's updated version that looked visually identical but had a different model number and supported 4K @ 60 Hz.
Ok, in that case you can try updating your system BIOS and your Intel graphics driver, but if that doesn't solve it, I would suspect either a hardware fault or at least an incompatibility with your specific equipment even if the hardware should work and WOULD otherwise work with other equipment, so it would become a case of isolating variables. For example, have you successfully tested that adapter and cable with another 4K display? Have you gotten that display to run 4K from any other system?
I have contacted DELL Service in my country (Greece) and tried all that allready (updates, cable and screen testing). They finaly send me an official DELL USB-C to DP cable which gave me a max resolution of 2560X1440.
My screen is Samsung U28E590D.