I have a Raspberry Pi 3 running Raspbian Stretch.
I need to connect it to a 17" 4K UHD (3840x2160) monitor via HDMI, I tried to do that but noticed that resolution is automatically set to full hd.
I tried to edit my
config.txt as described here and reboot the system, but nothing changed, the monitor is still seen as a 1920x1080.
Is there another way to set the correct resolution and use a 4K monitor on the RPi 3 with Stretch?