Question Is this the end for my LG 27GN950-B ?

[mrmiller]

I've been using my LG 27GN950-B monitor for nearly 5 years, and it's been amazing. Recently I have started encountering a strange problem.. usually when I turn on the PC, the keyboard+mouse+2X monitor all wakes up like it should. but recently when I turn on my PC, my main monitor doesn't detect that the PC is on. Instead, my secondary (smaller) monitor, which is also connected to the PC to the same GPU (RTX 3080), turns on and becomes the primary display. I have tried turning the monitor on manually, but it still doesn’t detect anything and sometimes it even freezes and the only way to fix it is to unplug it from the power and plug it back in.

I thought the DisplayPort 1.4 cable might be faulty, so I bought a new one (3 different types) but it didn’t help.

I switched the connection to a different port on the GPU, but that also didn’t work.

I connected the monitor to my MacBook using an HDMI cable, and it worked!

So....... I didn’t know what to do so I unplugged the power cable a couple of times because the monitor was stuck while I was using the OSD (when no input was detected the monitor just froze I don't know why). After reconnecting it 3–4 times, it finally detected my main PC. It started working perfectly for about two months, but then, boom.. it happened again. why is this happening? what’s going on? I don’t understand.. is the monitor dying? suffering? my GPU? should I downgrade/update the driver?

 

[Lutfij]

should I downgrade/update the driver?
Use DDU to remove all GPU drivers(Intel, AMD and Nvidia) in Safe Mode, then manually reinstall the latest GPU driver in an elevated command, i.e, Right click installer>Run as Administrator(assuming you're on Windows OS).

What motherboard are you working with? Might also be a good idea to see if you're pending any BIOS updates. you've mentioned hooking the monitor up to a MacBook, have you tried tethering the monitor to another Windows machine?

 

[mrmiller]

should I downgrade/update the driver?
Use DDU to remove all GPU drivers(Intel, AMD and Nvidia) in Safe Mode, then manually reinstall the latest GPU driver in an elevated command, i.e, Right click installer>Run as Administrator(assuming you're on Windows OS).

What motherboard are you working with? Might also be a good idea to see if you're pending any BIOS updates. you've mentioned hooking the monitor up to a MacBook, have you tried tethering the monitor to another Windows machine?

Mobo: PRIME X470-PRO, ver: 6223 - It's one version before the newest (should I?)
My OS is Win10, I usually install/update drivers using DDU and then install the driver through NVCleanstall
and... I don't have any Win laptop or machine

 

[Lutfij]

Mobo: PRIME X470-PRO, ver: 6223 - It's one version before the newest (should I?)
I make sure that I'm on the latest BIOS version, in the event that some anomalies pop so at the end of the day, I've made sure I've explored as many avenues before calling it a day.

I don't have any Win laptop or machine
You don't need to have one, you can take the panel over to your friend's or neighbors and test it out there.

 

[mrmiller]

Mobo: PRIME X470-PRO, ver: 6223 - It's one version before the newest (should I?)
I make sure that I'm on the latest BIOS version, in the event that some anomalies pop so at the end of the day, I've made sure I've explored as many avenues before calling it a day.

I don't have any Win laptop or machine
You don't need to have one, you can take the panel over to your friend's or neighbors and test it out there.

I don't have anyone right now for this mate