Split second white line on display

[koopa990]

Seen on desktop and gaming moments. Though it happens on rare occasions; should I be worried about this?

 

R7 7700x

RTX 3090 (used)

32GB 6000

Gigabyte B650 gaming X AX V2

Seasonic 1000W Gold

ASUS gaming 1440p

...

[podkall]

Dying monitor?

[koopa990]

4 hours ago, podkall said:

Dying monitor?

its new. Though, the only thing that happened to it was... I accidentally let it fell flat on the soft arm edge of my couch. No visible damage 

[podkall]

9 hours ago, koopa990 said:

its new. Though, the only thing that happened to it was... I accidentally let it fell flat on the soft arm edge of my couch. No visible damage 

DOA? no visible damage doesn't mean no damage, it's an electronic,

 

• if different cable or device displays same anomaly, then the last outlier is the monitor itself

[koopa990]

On 10/6/2025 at 5:08 PM, podkall said:

DOA? no visible damage doesn't mean no damage, it's an electronic,

 

• if different cable or device displays same anomaly, then the last outlier is the monitor itself

perhaps... yeah, that soft impact might have been it...

[koopa990]

Or something else?

 

One thing is I have a 2nd monitor that uses HDMI to display port. 

Another thing is my GPU is being supported by anti bracket 

[podkall]

6 hours ago, koopa990 said:

Or something else?

 

One thing is I have a 2nd monitor that uses HDMI to display port. 

Another thing is my GPU is being supported by anti bracket 

If your second monitor works, I doubt it's the GPU.

 

You could swap cables of one or other monitor can use each to rule out bad cable.

[koopa990]

On 10/13/2025 at 3:15 PM, podkall said:

If your second monitor works, I doubt it's the GPU.

 

You could swap cables of one or other monitor can use each to rule out bad cable.

What about specific port numbers on the GPU? It doesn't matter where I plug it in- at least for DP?

[podkall]

1 hour ago, koopa990 said:

What about specific port numbers on the GPU? It doesn't matter where I plug it in- at least for DP?

It shouldn't matter, it's just connection, there's no possible advantage for specific connectors unless it's different connector or version, which it most likely isn't.

 

Got any different cables for the monitor?

[koopa990]

1 hour ago, podkall said:

It shouldn't matter, it's just connection, there's no possible advantage for specific connectors unless it's different connector or version, which it most likely isn't.

 

Got any different cables for the monitor?

i'll report back once I have the cables for testing...

[koopa990]

On 10/15/2025 at 1:17 PM, podkall said:

It shouldn't matter, it's just connection, there's no possible advantage for specific connectors unless it's different connector or version, which it most likely isn't.

 

Got any different cables for the monitor?

so uhh... a major update: I have not tested on different cable yet, but I got new issue: infrequent artifact like white boxes/lines that flashes from time to time.

[podkall]

1 minute ago, koopa990 said:

I have not tested on different cable yet

why?

 

1 minute ago, koopa990 said:

infrequent artifact like white boxes/lines that flashes from time to time.

interesting, this could be GPU, but it also could be monitor getting worse

 

btw the line is constant or occasional?

 

does it appear randomly, or when specific content/game is displayed?

 

GPU temps while gaming?

[koopa990]

12 minutes ago, podkall said:

why?

 

interesting, this could be GPU, but it also could be monitor getting worse

 

btw the line is constant or occasional?

 

does it appear randomly, or when specific content/game is displayed?

 

GPU temps while gaming?

occasional... I think. It can also occur on desktop/browsing.

ATM of this message, I am debunking this out by turning off variable refresh rate from my monitor settings.

[podkall]

2 minutes ago, koopa990 said:

occasional... I think. It can also occur on desktop/browsing.

ATM of this message, I am debunking this out by turning off variable refresh rate from my monitor settings.

not sure if that would help anything, you can try

[koopa990]

On 10/18/2025 at 8:51 AM, podkall said:

not sure if that would help anything, you can try

Breakthrough update: It IS the included cable from Asus that caused the problem. I guess the header cannot be fully inserted in? The one I got from best buy is fully inserted

[podkall]

14 hours ago, koopa990 said:

Breakthrough update: It IS the included cable from Asus that caused the problem. I guess the header cannot be fully inserted in? The one I got from best buy is fully inserted

nice, better faulty cable than anything actually expensive, enjoy artifact free gaming/browsing

[koopa990]

7 hours ago, podkall said:

nice, better faulty cable than anything actually expensive, enjoy artifact free gaming/browsing

im surprised the included cable is flawless. 

[koopa990]

11 hours ago, podkall said:

nice, better faulty cable than anything actually expensive, enjoy artifact free gaming/browsing

Wait... WAIT. The very rare flickering, split second white line is back again... I guess its the display itself huh?

[podkall]

12 hours ago, koopa990 said:

Wait... WAIT. The very rare flickering, split second white line is back again... I guess its the display itself huh?

Could be, or GPU.

 

Do you ever use PC without gaming at all, or do you almost always run some game when the PC is on? Because that could rule out GPU potentially.

 

More arrows point to the display though, since straight line artifacts are common on failing displays or when parts of display fail:

 

Supposedly you don't have second monitor?

 

[koopa990]

8 hours ago, podkall said:

Could be, or GPU.

 

Do you ever use PC without gaming at all, or do you almost always run some game when the PC is on? Because that could rule out GPU potentially.

 

More arrows point to the display though, since straight line artifacts are common on failing displays or when parts of display fail:

 

Supposedly you don't have second monitor?

 

I just messaged the original seller that sold me the card. They said they never saw a single horizontal line flickering when he was testing it before shipping it.

 

I happen to buy another monitor from LG (the main display is Asus ROG.)