I just installed Zorin OS 17.1 with DualBoot in my laptop, it is a Dell G3 3500 with a GTX 1660 Ti. And I have an issue with the HDMI, I’m trying to connect my monitor by HDMI cable and my laptop doesn’t show anything in the monitor.
with the external monitor connected , please open the "Software Updater", please run this twice, then restart the pc.
then look in Settings>Display & see if the monitor is detected.
Hope this helps.
keep us informed.