LG 27GN950-B HDR issue

Dagare · 18 May 2021 at 01:37

Hi all, first time posting so sorry if this is in the wrong section.

I ordered the 27GN950-B last October, the monitor has been great for all of this time, however in the last week the monitor has stopped showing up as HDR compatible in both windows settings and from DXDIAG.

I have performed a full video driver reinstall using ddu, this has not helped, I have tried swapping from my gtx 1070 to my 980ti, the option still does not show despite having had HDR working on both previously.

I'm currently clueless, any advise would be greatly appreciated.

Dagare · 18 May 2021 at 10:41

Baddass said:
Tried a different cable or a full display reset?

No luck, full reset and using multiple dp and hdmi cables hasn't changed anything.

Dagare · 20 May 2021 at 09:59

Well, luckily it doesn't seem to be a hardware issues, got my hands on another HDR capable pc and that recognizes this as an HDR monitor no problem, probably a windows issue.

Dagare · 20 May 2021 at 10:25

Just had another look at DXDIAG, in the file from save all information, I've noticed this:

HDR Support: Not Supported
Monitor Capabilities: HDR Supported (BT2020RGB BT2020YCC Eotf2084Supported )
Display Pixel Format: DISPLAYCONFIG_PIXELFORMAT_NONGDI
Advanced Color: Not Supported