Custom Resolution Utility (CRU)

[Harters]

Hi Guys. Firstly I am glad I found this forum and tool. I almost achieved my goal and so hoping by a post here i'll get across the line. (and yes I will happily become a patron).

So, my set up is a Lenovo 64 bit machine running win10. The display adapter is an Intel UHD Graphics 620. Connected to the laptop via a usb-c port is a Dell DisplayLink 6000 which in turn is connected via HDMI to 2 JVC LT-24 monitors. I downloaded the displaylink drivers and all has been great for the last 3 months

Then yesterday the left monitor for some reason, half way through the day, decided it was only using 640x480. As there is no possibility to change this in standard windows display settings as its all greyed out i went on an internet discovery. I realised my issue is likely the EDID file. I found a couple of sites what offer tools for this but after the first two got too complex i gave up with them and found this site. Yay - i managed to make a small bit of progress as follows.

I unzip the CRU files and ran the CRU.exe I found as before i have 3 entries active. 2 for the monitors and one for the laptop screen. So firstly i exported each. I then opened the one for the good monitor , hit copy, then opened the bad monitor and hit paste. I then ran the restart.exe (wasn't sure if I should have used the restart64.exe) then tried to make changes in display settings as apart from a lot of flickering screens for 10 seconds nothing else changed. I kept trying but nothing works. I did manage to prove to myself the CRU tool is working as I changed the bad monitor description from "No Monitor" to be "Left Screen" and i do see this in Display Settings now.

I also saw that i do now have an EDID override entry in the registry (local/system/current control set/enum/display) sitting next to the Device Parameters key.

I read somewhere deleting the entries and rebooting might help but i was not able to delete the keys or entries.

Is there a way to export the EDID file (this seems easy using the CRU), saving it to my laptop and then flasing it up to the bad monitor as apart from the serial number both screens are identical other than one is stuck on low res.

Edit: So firstly afgter playing some more i find both screens are now stuck in low res. However, if I connect the monitor directly to the laptop using HDMI then the issue disappears. So does this suggest the EDID file on the monitor is in fact fine and the problem is with the dell d6000? I downloaded the dell firmware update utility and update the d6000 successfully but no change. I read that there is something called AMD Catalyst where you can force a resolution - of course I am on Intel so dont have this feature i assume. Until I can find a fix I guess I have to just use 1 monitor instead of two as i need to d6000 to connect the second monitor. Thanks for any advice in advance (and of course i will thanks you as a patron)