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NvAPI Warning

Hi, In Output Log unreal keeps spamming me warning: "LogD3D11RHI: Warning: NvAPI_Disp_HdrColorControl returned NVAPI_NOT_SUPPORTED (ffffff98)"

What is that and how to "fix" it? It's just warning, but I want to get rid off that, thanks.

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Product Version: UE 4.21
ue4editor.png (33.2 kB)
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asked Nov 15 '18 at 11:20 PM in Rendering

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avatar image Fire_O Dec 04 '18 at 07:48 PM

bump bump

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It's error of nvidia driver APIs and it means that GPU don't support some feature related to HDR. So what GPU do you use, whats system and driver version? (you can laso just post you log form Saved/Log which also includes your specs) You also set something related to HDR in NVidia settings or UE4? What monitor do you use? When i gogole info on it:


It seems like this that function only supported by Maxwell GPUs (GTX 9xx) and higher

Either way you might consider reporting a bug since this something that should not pop up and might be hole in GPU capability test:


But remember to define your specs in there as this is most impotent thing considering it might be compatibility error

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answered Dec 04 '18 at 11:42 PM

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avatar image Fire_O Dec 05 '18 at 06:16 AM

Hey, I have

  • MSI GTX 780 6GB OC

  • Windows 10 64bit

  • latest nvidia drivers

  • 3 diffrent monitors and 1 TV plugged to it

I'm not sure if I have something set in settings with HDR, I will check it in the evening with a fresh new project

avatar image Fire_O Dec 05 '18 at 09:12 PM

Okey, with new default project, problem still the same but...

I plugged out my TV, launched project and warning disappeared. But if I plug it again and restart engine, the same warning keeps spamming and spamming.

So, problem is TV, I have LG OLED55C6V, I guess I can't use HDR with my gpu (i'm using it with ps4). Is there a way to turn off this warning somehow with keeps TV plugged in? It's so frustrating, every little move with mouse on engine UI spam this warning on whole output log...

avatar image digoxy Dec 30 '18 at 01:05 PM

Was there ever any solution to this? I get this with a samsung tv. Is there a way to set the video card to not report this?

avatar image Fire_O Dec 31 '18 at 09:18 PM

Unfortunately I didn't found any solution

avatar image digoxy Jan 01 '19 at 06:31 AM

Thank you for the reply, have you entered a ticket or bug report? If so do you have record of the report?

avatar image Fire_O Jan 02 '19 at 01:35 PM

I didn't report it.

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