Some precision : I use the HDMI-HDMI cable from my monitor bundle
Cable should be fine.
Your driver is out-dated.
Try drivers from this list Downloads for Intel® UHD Graphics 620
To bypass message "best driver is already installed" or "computer is not validated" install driver via have disk method as described at:
(ignore prolog about MS surface)
Thank you for your help.
Following your steps, drivers have been updated but the problem is still the same.
Please see attached files
My LG monitor is also picky.
For me it works like ths:
Let your laptop finish booting, connect HDMI cable to laptop
Power on monitor
Quickly plug in HDMI into monitor before it reads "no signal"
This trick doesn't work for me.
Do you have any other idea?
How can i know who's wrong? I'm in contact with LG, INTEL and ACER, and nobody can tell me what happen ?! Even a 200€ laptop pc can handle this screen