I have Dell 2713h that has been working well with
miniDP <-> DP cable with my previous Mac (Early 2013). I got brand new Macbook Pro (2018) with only USB-C ports, got Unitek
USB-C <-> DP cable and things went wrong.
The display works fine until I set my mac to sleep or it sleeps by itself. After that when I wake up my mac, only internal LCD panel works, not the external display. It doesn't even react on power button hits unless I unplug it from the mac an plug it again. What's weird it seems that USB ports in the display work fine after wake-up (I have mouse dongle plugged in and it works fine).
Is this possible that the Unitek cable I have is the wrong one? What should I look for when searching for new one?
I've tried plugging the display via USBC <-> HDMI adapter and the issue above doesn't show up, but the display itself doesn't handle HDMI well (poor image quality), that's why I'd prefer having it connected via DP