madshi bug tracker

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IDProjectCategoryView StatusDate SubmittedLast Update
0000585madVRbugpublic2018-11-21 20:072018-12-04 19:37
Assigned Tomadshi 
PlatformOSOS Version
Summary0000585: Cannot activate HDR via DisplayPort
DescriptionI have a problem with activating HDR via DisplayPort. This is with a LG 34BK95U - 5120x2160 which requires DP 1.4 to get the full width. HDMI (which limits it to 3840 width) works fine.

Basically, it seems that madVR does not recognize that HDR is supported via DP, and thus always does tonemap HDR instead. (And I HAVE checked that HDR can be activated otherwise via DP.)
Steps To ReproduceIt only occurs with the above monitor (or probably with the 34WK95U which is identical) and only on the Displayport (1.4). Other than that, just play a HDR file with "passthrough HDR to display" set and "send HDR metadata to the display" checked and note that the HDR indicator does not appear and that the resulting image is from "tonemap HDR ..." instead.

I've included a log.

Additional InformationIt may or may not be related, but the "identification" for this monitor is wrong, e.g. it shows NVIDIA for the manufacturer (among other things). (Again, this is only on the DisplayPort 1.4 input to this monitor - the HDMI input is fine and DisplayPort (1.2) inputs on other LG monitors are fine.) And Moninfo shows correct data for this DP 1.4 input.

Even stranger, additional identical identification entries keep getting added, always 2 at a time (but I don't know what triggers it). The data is identical for all, with all but the last grayed out. (I'm currently at 23 entries.)
TagsNo tags attached.
madVR Version92.17 (probably any version that supports HDR)
Media Player (with version info)Zoomplayer 14
Splitter (with version info)LAV
Decoder (with version info)LAV
DecodingDXVA2 Copyback
Deinterlacingnone (progressive)
DXVA2 Scaling Activeno
Aero / Desktop CompositionOff
Problem occurs with modeall modes
GPU ManufacturerNVidia
GPU ModelGTX 1060, 1070
GPU Driver Version416.94
Attached Fileszip file icon madVR - [^] (389,651 bytes) 2018-11-21 20:07

- Relationships

-  Notes
jmonier (reporter)
2018-11-21 20:15

For some reason, OS data did not appear. The problem occurs on both Win 8.1 and 10.
madshi (administrator)
2018-12-04 19:37

That's really weird. I'll have to create a special build to collect more information, when I find some time...

- Issue History
Date Modified Username Field Change
2018-11-21 20:07 jmonier New Issue
2018-11-21 20:07 jmonier File Added: madVR -
2018-11-21 20:15 jmonier Note Added: 0002441
2018-12-04 19:37 madshi Note Added: 0002443
2018-12-04 19:37 madshi Assigned To => madshi
2018-12-04 19:37 madshi Status new => assigned

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