All drivers are freshly installed and up to date. Graphics card is Intel(R) Iris(R) xe Graphics and all cables also checked. Both monitors that are not detecting on this laptop work on my other laptop fine as of today. Everything worked until about 6-9 months ago when windows updated and now windows does not detect the second or third display, I tried everything I knew how to do and then I gave up and starting searching again and found this so I figured I'd give this a try. My computer is a Lenovo Ideal pad slim 7 pro 14IHU5. The monitors are hooked up to a omars dongle via HDMI and then the dongle hooks up to my laptop via USB-C. I'm super frustrated as this is a major hinderance on work trying to use the laptop screen only. Any help would be divinely appreciated!
I had the exact same problem. What worked for me after jumping through all those hoops, and still no luck, I took a look at my graphics card software. AMD was installed already, I launched it, read all the system menu options, chose display, and a very obscure option was at the bottom of the page....a single box to click, " Combine These Displays Into a Single Display.". Unchecked it, and instant success. I must have read that screen 100 times and didn't see it. Walked away frustrated, came back after a gin and tonic, sat back down, and saw it. It fixed all the problems and headaches. unfortunately, it reoccurs if I restart the machine, Im sure there is an additional checked box to fix that one too. But I will take the win for now, and only use sleep mode to shut down for the day