Monitor Goes Black

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Oriphix

523 posts

Ultimate Geek

#304195 12-Apr-2023 13:12

Hi All,

I have a strange issue where my monitor goes black while the power light is still on. It happens randomly once or twice a day. Only way i can get it to turn back on is by removing the Display port cable or power cycling the monitor.

Computer is setup as High Power and no screensavers etc.

The graphics card and monitor both are new bought over Christmas.

I tried another cable and latest AMD firmware.

Event logs doesn't show anything so its not driver crash from what I can tell.

I have used DVI / VGA and never had this issue. Using HDMI is also fine so seems to be related to DP.

Any ideas?

xpd

Geek @ Coastguard NZ
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#3061896 12-Apr-2023 13:53

Try on another PC to rule that out 100%.....

Gavin / xpd / FastRaccoon / Geek of Coastguard New Zealand

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mrdrifter

576 posts

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#3061905 12-Apr-2023 14:16

You didn't say what Brand/Model the monitor is.

It doesn't happen to be a Dell does it?

Silvrav

469 posts

Ultimate Geek

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#3061912 12-Apr-2023 14:44

xpd:

Try on another PC to rule that out 100%.....

This, separate the two, try the monitor on another PC and try another monitor on your PC and see where the issue is.

If you don't have a spare monitor and in the Christchurch area you can grab one from me to test with.

to add, when does this happen? (any specific app, tasks you can identify?) and are you running non native resolution for the monitor?

Groucho

524 posts

Ultimate Geek

#3061925 12-Apr-2023 15:42

I have a vaguely similar issue in my office of my screen going black but does come back on again after 3-4 seconds. Depending on ambient light I might see what was on screen really faintly so not 100% blackout.

I'm pretty confident mine's caused by some electrical noise as sometimes when it does it I hear my small fridge thermostat start/stop at the same time. Then other times I hear the thermostat start/stop and doesn't do it. I subsequently plugged the monitor into a Jackson branded filtered multi-board but makes no difference. Being a small office I don't have the luxury of trying another power point on a different circuit from the fridge.

Monitor is a Philips 273V7Q powered directly from the mains (not a power brick). Mac Mini desktop is the same, fridge is the same and old monitor never did it.

Oriphix

523 posts

Ultimate Geek

#3062087 13-Apr-2023 06:39

xpd:
Try on another PC to rule that out 100%.....

I have another monitor which i have tried and the same issue happens when plugged in via DP.
So might not be the monitor. The graphics card is Sapphire Pulse Radeon RX 6600 XT OC Edition (VGASAP26650)

mrdrifter:
You didn't say what Brand/Model the monitor is.

It doesn't happen to be a Dell does it?

It is a AOC Q27G2S

Oriphix

523 posts

Ultimate Geek

#3062088 13-Apr-2023 06:40

Silvrav:
to add, when does this happen? (any specific app, tasks you can identify?) and are you running non native resolution for the monitor?

It happens randomly when streaming netflix or when i click the task bar.
Running at 1440p resolution on AOC. On the Test monitor running 1080 resolution

Silvrav

469 posts

Ultimate Geek

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#3062103 13-Apr-2023 08:45

mmm, as you stated it happens with the other monitor, seems its driver or GPU related.

As this different resolution, its not a resolution issue (1440p vs 1080)

What refresh rate are you running? the 155hz natively? do you have freesync turned on for the GPU and G sync compatibility turned on the monitors? (if the 1080 monitor supports it).

Would suggest to turn these off and see if it still happens.

Another silly question, have you tried a different DP cable?

Seems this is a known issues and lots on the net about it. Lots seem to have success with disabling the ULPS: https://www.overclock.net/threads/how-to-disable-ulps-cfx-windows-10-crimson.1587347/

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ratsun81

508 posts

Ultimate Geek

#3063242 13-Apr-2023 14:04

Ive had a similar issue before,

2 things id recommend would be first to ensure that you have run DDU and wiped all display drivers for a complete fresh driver install.

The 2nd would be to change out to a known displayport cable. This is the one that helped me out the most. I do not recommend extremely expensive cables just something from a known brand.

The displayport cables that come with some of the cheaper displays can be a bit janky.