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MC crashes on D3D11 when 3D enable in NVIDIA control panel under FCU [Solved]

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mparade:

This trick is not working stable here. It is definitely working until the 6th-7th switching between 2D, 3D, 4K sources in JRiver within two reset of Windows.
Then OS cpl is no longer locked to Nvidia cpl anymore and "messing up" starts over again.

The solution would be to use the NVIDIA command line to switch its 3D mode. The question still is how because command line options inside madVR seem to be not working here, either.

tij:
I have not tested that many times ... maybe 4 or 5 switching between 3D and 2D sources ... will do more extensive testing tonight

I don't think madVR command line will be fixed ... the issue existed long time ... and was probably created to automate stuff like masking of projector screens ... since ppl who needs these have tons of cash, likely they pay ppl like Creston to do that for them ... normal ppl are more interested in quality and performance of madVR, so that's probably where developers are focusing

this issue with switching 3D is likely Windows issue than NVIDIA driver issue (NVIDIA command line seems to able to trigger this function flawlessly) ... and since 3D users move from critically endangered to extinct in the wild cause of TV manufacturers abandoning 3D, I do not think 3D is a high priority for anybody

regarding your unstable HDR ... did you set HDR passthrough in MadVR ... mine HDR works fine ... press ctrl+J when watching HDR stuff and note rendering times  it should be less than 40ms for 23Hz stuff

mparade:
Thanks for the answer. In command prompt calling the "Nvidia 3D switch" command line is working just fine.
HDR seems to be solved by using one of Asmodian's profile so it must have been some madVR set up problem from my side.

P.S.: Still getting dropped frames but only when there is an abrupt scene change to "black background with subtitle" e.g. in Dunkirk 4K there are some of them at the beginning to check.
While watching 4K my average rendering time is ~30-32 ms for 23Hz using "Max. Quality", anyway. 

P.SS: Using Kodi + MPC-BE/HC this 3D switch problem supposed to be avoided using an xml file which triggers switching between 2D and 3D and the player using madVR but I am a JRiver user, so...:)

tij:
can you point me to website that talks about this xml and kodi 3D setup

tij:
did some testing (I seriously doubted MC/MadVR could have cause breaking link between windows cpl 3D and NVidia cpl 3D ... as it was not the cause of the problem in first place)

so what i found:

1. if you switch TV off (in may case LG E6) no matter if 3D setting was on or off ... and resolution was 4K ... 3D link between cpl gets brocken

2. if you switch TV off no matter if 3D setting was on or off ... and resolution was 1080p23 ... 3D link remains

(if anybody could confirm this)

so one of the solution to keep the system stable is to run Windows and MC in 1080p23 ... and let MC switch to 4k when desplaying 2D movies but revert back to 1080p23 for user interface ... should keep 3D link alive (have not tested it)

interface will not look as flashy (doubt most ppl will able to see difference between 4K and HD insterface if run in Theatre View) ... but movies will run properly in 3D and 4K (native and upscaled)

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