Question Have to unplug/replug monitor on each boot

[a59]

Hello!

Having this weird issue with my monitor now when i boot i can see the bios screen and as soon as i get into Windows login screen the screen goes black i have to unplug the power cord and re-plug for it to display image or unplug/re-plug the HDMI cable, i guess monitor is dying? It's an LG Ultra wide 2560x1080, worked fine since the day i got it till today.

Also tried different Windows versions, 24h2/23h2 Windows 11, different GPU drivers. The bios screen always shows so it can't be the GPU or Bios/other hardware issues otherwise i shouldn't be getting an image at all, i did CMOS reset, downgraded BIOS, just to isolate the PC being a factor but i guess it's not?

If i do get a new monitor it won't be cheap that's why i would like some opinions before i get one and then find out it's not the issue, anyone familiar with this problem can give me guidance?

 

[Lutfij]

downgraded BIOS
You're advised to flash to the latest BIOS version not backwards. You're only going to cause anomalies with the OS as well since Windows 10 onwards they are nitpicky about a lot of things, even your BIOS.

Can you get into Safe Mode without any complications?

It's an LG Ultra wide 2560x1080
A SKU to the monitor would help us two fold. Have you tried working with different cables?

Try DDU in Safe Mode, then remove all GPU drivers(Intel, AMD and Nvidia), then manually install the latest GPU driver sourced from your GPU maker's support site in an elevated command.

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

 

[a59]

downgraded BIOS
You're advised to flash to the latest BIOS version not backwards. You're only going to cause anomalies with the OS as well since Windows 10 onwards they are nitpicky about a lot of things, even your BIOS.

Can you get into Safe Mode without any complications?

It's an LG Ultra wide 2560x1080
A SKU to the monitor would help us two fold. Have you tried working with different cables?

Try DDU in Safe Mode, then remove all GPU drivers(Intel, AMD and Nvidia), then manually install the latest GPU driver sourced from your GPU maker's support site in an elevated command.

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

Ops sorry for missing these key mentiones.

GPU is GT 1030 it has one HDMI 2.0 output and one DVI output.

I did try the DDU route on 24h2 and since the problem persisted i downgraded (Fresh install) to 23h2 Win 11 and tried a different nVidia drivers but the problem never went away.

Yeah at boot if i spam F8 i can get to safe mode each and every time without having to unplug or re-plug anything.

I was on the latest BIOS revision when it happened so figured it might be a factor that's why i downgraded.

CPU: i5 12400f (25c temp)
CPU cooler: MasterLiquid ML 240L V2
Motherboard: AsRock H610-HDV-M.2 current BIOS version 16.02
Ram: Fury Beast 8x8
SSD/HDD: One Kingston M.2 and an SSD. M.2 is at 32c temp.
GPU: GT-1030 GDDR5 version. (runs at 32c)
PSU: AeroCool VX Plus 500W (2022)
Monitor: LG UM58 - P dates back to fed 2018 i purchased it in 2019.
I don't seem to be having any kind of overheating issues in any of my components.

The rest of the components were bought during the release of Intel's 12 Gen all new.
I have no flickering or artifacts issues/never had them, only problem i have is black screen right after the login screen which is very recent.

 

[LinuxDevice]

I can't tell you if the monitor is dying, but it might be. FYI, HDMI cables include a wire called the "DDC" wire. This uses an i2c protocol to query the monitor for its capabilities. The power for the i2c circuitry in the monitor comes from the HDMI cable, which allows for query of a monitor which is turned off at the moment. If you lose this data, then the monitor will typically appear to be failed even if the hardware is good.

During boot the hot plug detect should trigger a query of the monitor. However, if there is some kind of timing issue, then query might fail. HDMI is hot-plug, and so if you unplug and replug, then what you are doing is triggering another query of the monitor. Besides a timing issue during boot, it is also possible that the cable is borderline quality, and perhaps data just isn't getting through. Or perhaps there is a nearby RF noise source, and interference is an issue (not usually a problem, but this is also not uncommon). You might change where your HDMI cable is routed, or try a different cable.

Also, DisplayPort has similar wiring. I generally consider DisplayPort to be a bit better at its job compared to HDMI.

Regardless of cable type, if your monitor is set to run at higher resolution or scan rate, then signal quality requirements go up. It is possible that at a lower resolution it wouldn't blank, but at a higher resolution it hasn't become stable during boot. Trying another monitor is a nice test, but unless it is at the same resolution and scan rate as the one which fails until reconnected, it might not be a "great" test.

EDIT: I forgot to mention that when a monitor is failing, then it is usually the power supply. Maybe it just isn't stable early on.