The big problem is that often it does not work - it goes in power save mode absolutely random, during work

Much like many of the other reviews have stated the lack of quality is a problem.

There is no fix of this problem (tech support suggestions are ridiculous: according to them (something that I had done anyway before I contacted them) you have to unplug and plug all cables (in different combinations) in order to switch it on again

(4K@60Hz)Brand new Dell U2415 monitorUpdate (same day as original review ... still on my first full day using this thing ... planning to return it):Like others, I'm getting the problem where the monitor periodically goes black

This screen is just great, but I am giving it 2 stars because of the annoying connection problem.

other then there being an odd problem with dimming when the majority of the screen is dark when i use the preset color settings for games, the picture and quality of the monitor is good

Don't know if it was a defective monitor or a systemic problem with this unit and PowerBooks.

During my testing I verified that the computer supported DP 1.2 so enabled that setting in the monitor menu and that corrected the problem.

This was a really annoying problem (that Dell should have addressed a long time ago

My monitor has dark-edges problem in 1 year usage with Macbook Pro (I am using this monitor only at weekends!)

is a problem with the main menu button frequently not working,I don't plan to use the button much as I expect the button to totally die.2

He thanked me for performing all the troubleshooting to isolate the problem to the monitor and immediately made arrangements to have me return the monitor with a pre-printed shipping label, and he placed an order for a new monitor, which arrived today, and I just got it all connected.

, manifested the problem a different way - this time it would not flicker but make the screen blink every few seconds

And the assistance did not come from the Dell website, which is next to useless as well b/c it deals with all Dell monitors, but not specific ones

good, but not as great as the U2412M, even though 2412m is older but the color is more vivid and crisp.