[mclingo]

=11ptok, so your chain is fully 4k.

There are some issues with MADVR coming going back to 4k from 1080p but as far as I knew it only affected 3D. If you play a 3D movie then stop it you'll get a black screen and either your PC will have crashed or you have just lost HDMI handshake. To check this setup an RDP connection from another PC in the house or your mobile phone,  if you can logon then its just HDMI loss.

Getting back your HDMI.

1. Create a script or batch and program this to your remote, this often wakes mine up again.

https://thydzik.com/hdmion-a-solution-to...on-hd-tvs/

2. If this doesnt work turn your AVR off and your display, then run this again, then turn on your AVR, then your display.
=11pt3. If neither works, logon via RDP and reboot your PC.


Prevention. =11ptFirstly, your PC should never need to go into 1080p mode so why is it?, this suggests to me you’ve not got something setup right in MADVR or KODI DS as everything should be upscaling to 4k, the only time it will go into 1080p mode is when you are playing something in 3D, if this is the case then you have the known bug and the workaround is above, don’t use MADVR refesh rate switching.

Things to check.

1. KODI DS gui MUST be 3840x2160@60hz (same as desktop)
   
2. KODI DS SYSTEM – you MUST use windowed mode in KODI DS.
   
3. DO NOT use windowed mode in MADVR
   
4. You need FSE for 3D, it should not cause you any issues as long as you don’t use MADVR refresh rate switching.
   
5. DIRECT3D11 – this MUST be on but it might cause blown out reds for SDR material, if it doesn’t let me know.
   

EDIT - ive not played anything in 3D for a while, there looks to be some new issues with it but it could just be the fact ive recently moved to D3D11 decoder in LAV and DS, this seems to produce far more HDMI loss than standard DXVA copy back, disappointing as I can get about 20% more processing out of D3D11

could also be an issue with latest drive but for now drop back to DXVA copy back mode, i'm going to test the last stable driver though.    

Thank you.. I do not care for 3D and will not be watching any 3D movies so that's out of the question..

1. KODI DS GUI is 3840x2160 (same as desktop) but I didn't know you could choose the hz within Kodi? I check Adjust refresh rate to playback.
   
2. KODI DS SYSTEM – I never used windowed mode in KODI DS what effect does this have when enabled please? I will definitely try it tomorrow as I am currently at work, working night shift.
   
3. I don't think I am using windowed mode in MadVR but how can I check please, which tab is it under? Thanks.
   
4. Sure Thank you...
   
5. DIRECT3D11 – this MUST be on but it might cause blown out reds for SDR material, if it doesn’t let me know. I use this with Native mode and no issues with playback.
   

 

Hi, if you're desktop is 4K and you are not playing 3D styff then how and why are is your setup moving back and forth from 1080p?, everything should be upscaled to 4k, nothing should be playing in 1080p.

I suspect you've put in some 1080p display modes into MAVR in error, there should have been only 2160p display modes in MADVR.

When you get home follow these steps one at a time, one after the other, stop when you get a fix.


1. In MADVR display modes, remove everything and just put in 2160p23; 2160p25; 2160p30; 2160p50; 2160p60 and nothing else at all. - (((( REASON - there is a bug in MADVR which breaks HDMI HANDSHAKE moving from 108-p back to 4k desktop, up until now i've only seen it with 3D but you may have this issue )))


if this works, thats your fix, if this doesnt work.... continue.



2. go into KODI DS and enable windowed mode in SYSTEM  ((( REASON - without this, sometimes KODI plays in a little box in the corner of the screen, or you get handshake loss sometimes. ))))


if this works, thats your fix, if this doesnt work.... continue.


3. Set LAV to DXVA COPYBACK, Set KODI DS video decoding to DXVA COPY BACK - ((( REASON, i have found a bug with D3d11, it can cause loss of hanshake for 3D playback but its likely that is a problem moving from 1080p back to 4k thats causing it, COPYBACK mode doesnt have this problem however.

If none of this works come back to me.