I wonder if it's worth trying your troublesome HDR (and a working HDR) with this monitor? It may produce useful data points. If it green screens then the issue is most likely with the Humax. If it doesn't produce green screen then it may be to do with HDCP revocation list (assuming the monitor isn't linked to the internet). Although the EDID issue may throw this guess out.Don't get me started on EDID! My electriQ (sic) UHD monitor returns a manufacturer ID which is identified in the tables as "do not use". That means when I go into desktop settings, the desktop layout mapping to monitor(s) disconcertingly displays "do not use" as my main (only) monitor! Very confusing.
I cured it by editing the look-up table, but that means doing it again every time the OS gets updated.
I can't decide if my green screen HDR is an issue with hardware or software/firmware.
If it is hardware - it doesn't explain the ability to show the screen properly during pre-HDCP (as BH mentioned).
If it is software/firmware, then the only thing I can think of is the HDCP revocation list was tripped - making the HDR incompatible with my TV.
From these links some TV makes had issues with the HDR - LG, Samsung, Sony and occasionally Panasonic, Sharp.
(Jan 2012) https://community.sony.co.uk/t5/oth...ng-humax-hdr-via-hdmi-to-sony-kdl/td-p/282489
(Apr 2013) https://myhumax.org/forum/topic/green-screen-issue
(Apr 2014) https://myhumax.org/forum/topic/green-screen-1
(Oct 2015) https://myhumax.org/forum/topic/green-screen-saga#post-41394
(Oct 2016) https://myhumax.org/forum/topic/green-screen-2
(Mar 2018) https://myhumax.org/forum/topic/green-screen-3
In my case my first HDR purchase was June 2016. This developed an intermittent green screen issue. The green screen issue gradually got worse and became permanent in roughly 2018. I haven't had TV firmware updates since 2013, only CFW updates (but others have had the issue without CFW - so it can't be that).
My one developed issue like this one
It's so confusing.I convinced myself that it was a timing issue caused by component ageing as, in my case the problem first showed up some years ago with a Sony Bravia TV, and got progressively worse over some months. When the Bravia was replaced by a Panasonic, the green screen went away. However, some years later, the problem has resurfaced very occasionally. It remains to be seen whether it gets gradually worse as before.
For info the Loader is 7.31. I didn't try changing it as others had reported no improvement.