Problems with the XG270 I just received? [Possible Cable Issue]

[Ibp315]

Received my XG270 yesterday and it was working normally when connected to my PC using the DP cable it came with. I then noticed that my games weren’t running in true full screen so I applied the registry fixes I usually use. Here[Here](https://windowsreport.com/windows-10-ve ... 03-gaming/) is a link to the fixes I used on my AW2518Hf without issue.

I started up fortnite to test and realized the game, after loading through the splash screen, brought me to a black screen. I was only able to run the game in borderless windowed mode. I was messing around with my monitor settings but wasn’t able to fix the issue. I then turned off HDR in windows and my screen went black.

On reboot, there was a black screen after I went motherboard splash screen and windows logo. I switched back to my AW2518Hf and everything worked normally. I was never able to get the xg270 to produce an image after the windows logo screen on boot.

Has this ever happened to anyone? Are there any fixes or is something just defective with my monitor?

[Ibp315]

Just a quick update, I tested the monitor by with an insignia brand DP cable which worked on my AW2518Hf monitor, the "hotron" brand cable it shipped with and an HDMI cable. I was not able to get a video signal with any of those cables outside of the 4ish hours it worked with the Hotron cable it shipped with. I did a complete reinstall of GPU drivers using DDU and still no luck. I am only able to use the monitor with a higher quality HDMI cable that I had on hand.

At this point, I don't know if something is wrong with the monitor, the cable, or my system. My only options are to purchase a DP 1.2 certified cable, or exchange the monitor for a different one. When using the DP cables I had on hand with it, I only get the motherboard splash screen and windows logo to come up before it goes dark.

Update: Monitor is now working fully with the cable it shipped with. I had to change my NVIDIA color settings output color depth from 10 bpc to 8bpc and the output color format to YCbCR422.. I don't know what the reason for that is

[Chief Blur Buster]

Update: Monitor is now working fully with the cable it shipped with. I had to change my NVIDIA color settings output color depth from 10 bpc to 8bpc and the output color format to YCbCR422.. I don't know what the reason for that is

I've seen this happen before caused defective included cables.

It appears the DisplayPort bandwidth is reduced, forcing you to a lower refresh rate, lower color depth, and/or a compressed color depth (YCbCr 4:2:2 is more "compressed" than RGB).

Are you able to try a diferent DisplayPort cable?

[Ibp315]

Update: Monitor is now working fully with the cable it shipped with. I had to change my NVIDIA color settings output color depth from 10 bpc to 8bpc and the output color format to YCbCR422.. I don't know what the reason for that is

I've seen this happen before caused defective included cables.

It appears the DisplayPort bandwidth is reduced, forcing you to a lower refresh rate, lower color depth, and/or a compressed color depth (YCbCr 4:2:2 is more "compressed" than RGB).

Are you able to try a diferent DisplayPort cable?

I am not as I only have the Insignia one and "hotron" brand it came with on hand. When I set my color settings to 8bpc, YCbCr422 and a limited output dynamic range, I can use all the features of the monitor with the DisplayPort cable it came with. If I change the Output color format to RGB with 8bpc or 10bpc, the options to use PureXP or any of the preset color modes are disabled. If I turn on adaptive sync with RGB color depth enabled, I lose picture and have to plug in an hdmi cable to turn adaptive sync back off through the monitor.

I am not using gsync with vsync through the nvidia control panel at the moment so I can still refresh at 240hz using the hdmi cable I have on hand. I still would, however, like to be able to use every feature of the monitor.

Would purchasing a VESA certified DisplayPort 1.2 cable allow me to do that?

[Chief Blur Buster]

Would purchasing a VESA certified DisplayPort 1.2 cable allow me to do that?

Yes, it should.

That said, there are odds:
-- Your GPU is too old (pre-GTX 1060); or
-- Your GPU drivers needs to be upgraded (I've seen things fixed); or
-- Your GPU has a defective port;
-- Monitor has a defective port (1% chance);

However if your GPU is recent (NVIDIA 1000-series or newer, or a FreeSync-compatible AMD Radeon), 90% of the time for glitches like these, it ends up being the cable.

[Ibp315]

Would purchasing a VESA certified DisplayPort 1.2 cable allow me to do that?

It should.

That said, there are odds:
-- Your GPU is too old (pre-GTX 1060); or
-- Your GPU drivers needs to be upgraded (I've seen things fixed); or
-- Your GPU has a defective port;
-- Monitor has a defective port;

However if your GPU is recent (NVIDIA 1000-series or newer, or a FreeSync-compatible AMD Radeon), 90% of the time for glitches like these, it ends up being the cable.

My GPU is an RTX 2070. Does this monitor have greater bandwidth requirements than something like the AW2518Hf? I had no issues using that monitor with the insignia display port cable. It seems that this cable and the insignia one can’t support the bandwidth requirements for Adaptive Sync enabled with RGB color mode enabled.

[Ibp315]

Also, if buying a better display port cable is the route to go, is there a preferred brand or place to order quality ones from?

[Chief Blur Buster]

My GPU is an RTX 2070. Does this monitor have greater bandwidth requirements than something like the AW2518Hf? I had no issues using that monitor with the insignia display port cable.

No, it doesn't.

It seems that this cable and the insignia one can’t support the bandwidth requirements for Adaptive Sync enabled with RGB color mode enabled.

It shouldn't be a bandwidth issue for Adaptive Sync portion. Enabling Adaptive Sync doesn't increase bandwidth (same Hz for Hz). Those are sometimes graphics driver glitches. What driver version are you using?

[Ibp315]

I am using 442.59. The newest driver release didn’t seem to improve anything outside of playing Doom Eternal which I’m not doing anyways. I did upgrade to the latest and the issue did persist. I just rolled back to 442.59 for better FPS.

I did one last test with the monitor and using the DP cable it came with, I go to a black screen if I have RGB color enabled the second I turn on adaptive sync through the monitors OSD.

I ordered a VESA certified DisplayPort 1.4 cable. I’m hoping it’s just faulty cables considering the ones I have aren’t certified at all. The DP cable it came with works if I switch the color mode to YCBCR which like you said ends up lowering the bandwidth

[Chief Blur Buster]

I ordered a VESA certified DisplayPort 1.4 cable. I’m hoping it’s just faulty cables considering the ones I have aren’t certified at all. The DP cable it came with works if I switch the color mode to YCBCR which like you said ends up lowering the bandwidth.

AdaptiveSync tends to not work on the oldest DisplayPort versions (regardless of bandwidth) so hopefully the version 1.4 certification solves the problem.

I've had SO many problems with cheaply manufactured cables. Sometimes they even mess up manufacturers -- you're not the only one, ASUS and BenQ have also been prone to these flaky cables too (it's so widespread of an issue, even 1 in 20 bad cables means 50,000 bad cables for a 1 million monitors worldwide) --

I have seen quite a few DisplayPort cables being problematic with almost any manufacturer, with those "included cables" since they're not made by the manufacturers themselves but purchased in bulk from a cable manufacturer, in order to be included with factory monitors. This was a huge problem (And still is) with DVI cables with the first gaming monitors even way back when Blur Busters started about a decade ago -- high refresh rates didn't work until you replaced the cable with a proper dual-link DVI cable.

If the 1.4 cable fixes the problem, let me know!