Here’s the log and output:
http://paste.osmc.tv/avateyunas
osmc@vero4k:/sys/class/amhdmitx/amhdmitx0$ echo 422now | sudo tee attr
422now
osmc@vero4k:/sys/class/amhdmitx/amhdmitx0$ cat config
cur_VIC: 353
VIC: 353 3840x2160p60hz
Colour depth: 10-bit
Colourspace: YUV420
Colour range: limited
EOTF: HDR10
YCC colour range: limited
PLL clock: 0xc000029a, Vid clock div 0x000b0000
audio config: on
3D config: off
Again no signal for that video.