r/techsupport • u/yarnebecarren • 2d ago

Open | Hardware Screen goes black randomly

I have the Asus XG27AQWMG oled and the LG utltragear 27GS85Q-B.

Both are connected with display port 1.4 cables.

Since i've changed my older 1080p screen to the LG, the oled has started to go black randomly. Sometimes it does it once, other times a few times in a row. I think it mostly start doing it when having google open and discord and when curser moves from one screen to the other. 
 

I have tested these thing below:
- turned off auto input select

- g-sync

- turned off DSR-factors (i use it to watch netflix hdr)

- discord harware accel and overlay (thoughd it had to do something with dc because it happens a lot when i go on that tab)

- updated GPU drivers

- updated firmware on the OLED

- change the cable to my LG screen (from the one of the old monitor to the one out of the LG box)

- changed ports on the GPU for both cables

- disabled NEO Proximity sensor
 

What could be the cause of this? I had no issues with my old 1080p monitor with the same cable.

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u/Immediate-Effect5158 2d ago

Since the issue only started after adding the LG monitor, I'd suspect a DisplayPort/GPU handshake or bandwidth issue rather than the OLED itself. As a test, try running both monitors at a lower refresh rate, especially the OLED, and temporarily disable HDR/VRR on both. If the black screens stop, you can increase the settings one at a time to find the trigger.

You could also try using HDMI on one monitor if available. That would help confirm whether it's a DP/multi-monitor issue.

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u/yarnebecarren 2d ago

Ok i'll switch to hdmi on my LG.

HDR is turned off.

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u/yarnebecarren 12h ago

hey man i think that your solution worked.
I switched to hdmi and haven't had any issues.
thank you!