how do i get HDR working please?

fastboy · 8 Mar 2019 at 11:53

hi all

so I have an ACER KG271B monitor which is HDR ready,yet in the menu option on the screen it is greyed out.
im sure I had it enabled once when I first got the monitor but not sure how lol.

its a 240hz 1080p panel and im using display port on a 1080ti.

any ideas?
cheers

mods1965 · 8 Mar 2019 at 12:30

If you running W10, make sure Play HDR games and apps under Windows HD Colour is turned on in settings.
For your monitor make sure you have at least DisplayPort ver 1.2 set.
My Samsung monitor will not activate HDR if less then DP 1.2 is set.

fastboy · 8 Mar 2019 at 12:59

hi
yes im running windows 10
yes it is set at 1.2 on the monitor

where is the HDR setting you speak of?
I also see in nvidia panel the max bpc I can set is 8 regardless of wether I choose rgb full,limited or 444/422.

Cooper · 8 Mar 2019 at 13:01

Just type HDR in the windows search box and press enter, it will take you the relevant settings.

fastboy · 8 Mar 2019 at 13:07

hi
on the video playback setting it says 'we didn't find any displays set up for HDR'

if I use dxdiag and use the monitor tab and scroll down it says HDR not supported,

it looks like I have to enable it I guess on the monitor but its greyed out.

fastboy · 8 Mar 2019 at 13:08

oh and my monitors are just labelled as generic monitors in windows display

peahead · 8 Mar 2019 at 13:24

Hi

Click the start menu then select settings then system then display and then click on windows HD color settings.

It should show you your displays capabilities.

Also try installing the monitor driver.

https://www.acer.com/ac/en/GB/content/support-product/7176?b=1

fastboy · 8 Mar 2019 at 13:36

I don't have a windows hd colour settings tab

mods1965 · 8 Mar 2019 at 13:46

Are you using displayport cable? If you use HDMI. it might not support HDR.

peahead · 8 Mar 2019 at 13:47

Yep that option is not there so either the monitor does not have true HDR support or it has one of those fake HDR picture settings modes.

peahead · 8 Mar 2019 at 13:52

The manual does not mention anything about HDR support but in the specifications it says.

<li>High Dynamic Range (HDR)</li><li>Navigation Key</li>

So it there a button on the monitor or a option in the menu to turn it on?

fastboy · 8 Mar 2019 at 13:55

yes using displayport with good cables,i can run 240hz no problem,i have 3 of these monitors too and all are the same.
oh well thanks for the help guys..

you can see the HDR is greyed out and cannot change it,now I seem to recall I inititally had my center monitor on a hdmi cable,again being able to run 240hz ok on it..i wonder if that's the issue.

mods1965 · 8 Mar 2019 at 13:58

Looking at Acer web site for this model, it does say that it supports HDR.
My Samsung has no button to turn on HDR. You just select DP1.2 and Windows 10 detects it automatically.

peahead · 8 Mar 2019 at 13:59

Try dropping the refresh rate down on the monitor and then see its the HDR option becomes available ?

fastboy · 8 Mar 2019 at 14:17

yes I tried that,im at 60hz now on all 3 monitors,i even tried unplugging 2 of them to see if that helped but to no avail.

the monitor driver that peahead linked to is for the kg271 which is only 75hz,i cant seem to find a driver for the kg271b,whether that makes a difference or not I don't know.

peahead · 8 Mar 2019 at 14:30

KG271B driver was in that link the third one down but dunno if it will make any difference. i am not sure what else to suggest.

fastboy · 8 Mar 2019 at 14:43

ok..this is weird

I connected one of the monitors to a good hdmi lead, now the HDR is not greyed out on my monitor.

I also now see a HDR and WCG slider in windows display settings..altho its greyed out maybe because I still have the other 2 monitors connected via DP

fastboy · 8 Mar 2019 at 14:50

ok so I unplugged the other 2 monitors using DP and bingo I can get the HDR working..so for some reason they don't work over DP.

altho looking at how washed out this looks now on the desktop..im not sure I like it lol.

peahead · 8 Mar 2019 at 14:53

fastboy said:
ok so I unplugged the other 2 monitors using DP and bingo I can get the HDR working..so for some reason they don't work over DP.

altho looking at how washed out this looks now on the desktop..im not sure I like it lol.

Glad you figured it out but personally i never use HDR for the desktop just for a select few games.

fastboy · 8 Mar 2019 at 14:57

thanks

the washed out look was cured because dumbass here hadn't turned it to auto in the monitor options...

oh welli cant run it anyways with displayport so back to SDR.

thanks for the help guys.