144 HZ having random flashing black screens. :: Hardware and Operating Systems

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Baron Von Ellis 28 Jul @ 1:55pm

144 HZ having random flashing black screens.

Hello, I just bought a Gigabyte ultra wide screen monitor M34WQ and have a Radeon RX 480 on Win 10. When using displayport 3440x1440 at 144 HZ the screen will randomly flicker to black for a second. If I use 100 HZ it works fine. Or 2560x1080 at 144Hz it works fine. But I'd like to use the max settings for what I bought this monitor for. The RX 480 does Displayport 1.4A. Does anyone know if that displayport version wont support 3440x1440 at 144 HZ ? It happens in every game on steam. I also disabled AMD free sync.

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Showing 1-15 of 20 comments

_I_ 28 Jul @ 3:02pm

some combos of displays and gpus will do taht when gsync/freesync are enabled

Baron Von Ellis 28 Jul @ 3:11pm

I tried disabling free sync and it still does it, the monitor doesn't have gsync.

_I_ 28 Jul @ 3:13pm

does it say no signal or the power light change?

Baron Von Ellis 28 Jul @ 3:27pm

The screen goes totally black for about 2 seconds and then come back on again. It does it randomly when playing any games on steam. But when on the desktop browsing email non game things it never happens. Sometimes there is about 1 pixel horizontal white line across the screen for 2 seconds when playing games.

Bad 💀 Motha 28 Jul @ 4:55pm

It can be due to FreeSync or HDR
Or perhaps the Display has an internal OC enabled

Last edited by Bad 💀 Motha; 28 Jul @ 4:55pm

Baron Von Ellis 28 Jul @ 8:08pm

I tried OC the GPU and that made the black flickering go away somehow.

Bad 💀 Motha 28 Jul @ 9:05pm

I've also had this occur a few times (even though nice quality DP cable was used) when certain cables were too close to my DP cables.

Also see:
https://www.google.com/search?sourceid=chrome&udm=50&aep=42&q=Can+having+gaming+PC+too+close+to+high+refresh+monitor+cause+flickering

Last edited by Bad 💀 Motha; 28 Jul @ 9:09pm

Pocahawtness 28 Jul @ 10:35pm

Originally posted by Baron Von Ellis:
Hello, I just bought a Gigabyte ultra wide screen monitor M34WQ and have a Radeon RX 480 on Win 10. When using displayport 3440x1440 at 144 HZ the screen will randomly flicker to black for a second. If I use 100 HZ it works fine. Or 2560x1080 at 144Hz it works fine. But I'd like to use the max settings for what I bought this monitor for. The RX 480 does Displayport 1.4A. Does anyone know if that displayport version wont support 3440x1440 at 144 HZ ? It happens in every game on steam. I also disabled AMD free sync.

You are exceeding the bandwidth of your cable. You need a new cable.

Last edited by Pocahawtness; 28 Jul @ 10:36pm

_I_ 28 Jul @ 10:42pm

Originally posted by Pocahawtness:
Originally posted by Baron Von Ellis:
Hello, I just bought a Gigabyte ultra wide screen monitor M34WQ and have a Radeon RX 480 on Win 10. When using displayport 3440x1440 at 144 HZ the screen will randomly flicker to black for a second. If I use 100 HZ it works fine. Or 2560x1080 at 144Hz it works fine. But I'd like to use the max settings for what I bought this monitor for. The RX 480 does Displayport 1.4A. Does anyone know if that displayport version wont support 3440x1440 at 144 HZ ? It happens in every game on steam. I also disabled AMD free sync.

You are exceeding the bandwidth of your cable. You need a new cable.

that would just not work, not black out randomlly

what you can test is use its osd menu to turn down the brightness/backlight to 75-80%
if that helps its a backlight led going bad

Bad 💀 Motha 28 Jul @ 10:50pm

Originally posted by Pocahawtness:
Originally posted by Baron Von Ellis:
Hello, I just bought a Gigabyte ultra wide screen monitor M34WQ and have a Radeon RX 480 on Win 10. When using displayport 3440x1440 at 144 HZ the screen will randomly flicker to black for a second. If I use 100 HZ it works fine. Or 2560x1080 at 144Hz it works fine. But I'd like to use the max settings for what I bought this monitor for. The RX 480 does Displayport 1.4A. Does anyone know if that displayport version wont support 3440x1440 at 144 HZ ? It happens in every game on steam. I also disabled AMD free sync.

You are exceeding the bandwidth of your cable. You need a new cable.

If that was true, you'd get a non-recoverable black screen when you change the refresh rate.

The cables are fragile, if you curl them too tight at some point or bend them; this sort of thing can happen.

#10

smokerob79 28 Jul @ 11:01pm

try a new cable....DP cables are super easy to break and should never be moved.....even in never moving them i had them go bad after 4 or 5 years of use NEVER touching them after mount and install of monitor

#11

Bad 💀 Motha 28 Jul @ 11:23pm

Originally posted by smokerob79:
try a new cable....DP cables are super easy to break and should never be moved.....even in never moving them i had them go bad after 4 or 5 years of use NEVER touching them after mount and install of monitor

Not really. I have nice braided cables and abuse the hell out of em. 2 of them are 8 years old, not a single issue with them.

If anything it's just a cheap designed cable if that's your issue maybe. I've had much more issues with flaky HDMI cables then anything.

Hoping soon GPUs will just get rid of HDMI and DP and just use HDMI to Type-C or DP to Type-C

#12

Baron Von Ellis 29 Jul @ 9:28am

Originally posted by _I_:
Originally posted by Pocahawtness:

You are exceeding the bandwidth of your cable. You need a new cable.
that would just not work, not black out randomlly

what you can test is use its osd menu to turn down the brightness/backlight to 75-80%
if that helps its a backlight led going bad

I'm using the brand new DP cable that came with the new monitor out of the box. I've only got brightness at 50%. I bought the monitor 4 days ago.

#13

AmaiAmai 29 Jul @ 9:55am

Originally posted by Bad 💀 Motha:
I've also had this occur a few times (even though nice quality DP cable was used) when certain cables were too close to my DP cables.

Also see:
https://www.google.com/search?sourceid=chrome&udm=50&aep=42&q=Can+having+gaming+PC+too+close+to+high+refresh+monitor+cause+flickering

^ Most likely scenario

Originally posted by Baron Von Ellis:
Originally posted by _I_:
that would just not work, not black out randomlly

what you can test is use its osd menu to turn down the brightness/backlight to 75-80%
if that helps its a backlight led going bad

I'm using the brand new DP cable that came with the new monitor out of the box. I've only got brightness at 50%. I bought the monitor 4 days ago.

I had a Dell monitor come with a certified HDMI cable with it's watermark and QR code. Guess what? Cable still couldn't do 4K 144Hz or 8K 60/75.

I concluded that the cable doesn't support the monitor when used with the GPU, and trying another DP cable I already had on hand from an MSI monitor that died after 1 year that MSI was too greedy to replace, it worked perfectly.

Last edited by AmaiAmai; 29 Jul @ 9:55am

#14

_I_ 29 Jul @ 10:06am

Originally posted by AmaiAmai:
I had a Dell monitor come with a certified HDMI cable with it's watermark and QR code. Guess what? Cable still couldn't do 4K 144Hz or 8K 60/75.

I concluded that the cable doesn't support the monitor when used with the GPU, and trying another DP cable I already had on hand from an MSI monitor that died after 1 year that MSI was too greedy to replace, it worked perfectly.

you should not use hdmi for over 4k60
most monitors with dp and hdmi will be limited refresh rate or res due to its hdmi spec
better cable quality will not make a difference if its input port is restricting the res or refresh rate

but that wont cause black screen, it just wont work

Last edited by _I_; 29 Jul @ 10:07am

#15

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Date Posted: 28 Jul @ 1:55pm

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