4k 10-bit playback issue

Help and Support Vero 4K / Vero 4K +
1

I am fairly sure this used to work, but recently appears to have stopped working

I have my Vero4k connected via HDMI to a Denon AVR X2400H
If I set the ‘HDMI mode’ to enhanced on my amp (this is the setting to enable 10bit support on the amp), then ANY content I play from the Vero results in a black screen. I know the content is still playing, because I can see (via the Kodi remote app on my phone) that the film timer is running. If I use the app to stop playback, the Kodi GUI returns
If I turn off ‘enhanced mode’, then the Vero is happy to out put everything at 8bit

I have a SKY Q box which is quite happy to do 4k 10-bit (with the appropriate setting on the Denon amp)

I have also got a failed blue LED (I am aware this is a known issue) but whilst troubleshooting this, I replaced the power supply twice, so I am fairly confident this isnt a power issue

I have also replaced the HDMI cables, tried different HDMI inputs on the Denon (including the one with the working SKY Q box on). I have also connected directly to the TV with no success

One other strange issue with the Vero - it seems to hold open the HDMI in a very strange way, which randomly prevents any other HDMI device connected to the amp from working. If I unplug the HDMI cable from the Vero, then other devices can successfully handshake

EG - If I watch a movie on the Vero, then attempt to switch sources back to the Sky Q box - all I get is a black screen, forcing me to reboot the SKY Q box. This only happen immediately after using Vero
This never EVER happens after switching from PS4, Blu-Ray player or ARC

Also, if I switch from an input source to an ARC source (eg, Netflix on my LG TV), there is no sound until I unplug the HDMI from the Vero

Is it goosed? :slight_smile:

I will upload some logs shortly, but has anyone else seen anything like this? I realise there may be two separate issues here, but it feels like they may be related in some way, as they are both broadly HDMI type issues

2

Enable HPD Lock to fix issues when switching between Sky box.

What does the ‘enhanced’ option claim to do?

Sam

3

‘enhanced’ mode enables the 10-bit support on the Denon amp

When it is disabled, my Sky Q box only detects (and outputs) 8-bit
When it is enabled, the Sky Q box will detect (and output) 10-bit

However, what I think is happening is that Vero is detecting 10-bit support on the amp and is attempting to output at 10-bit and failing for some reason

If I disable ‘enhanced’ mode, then Vero is detecting only 8-bit support from the amp and outputs accordingly - which works

4

Probably fixed with [TESTING] Vero 4K / 4K + video improvements which will be released soon.

Sam

5

thanks Sam, it seems to have fixed the 8bit/10bit playback issue.
Still having an issue when I change the amp input source away from the Vero, but it only ever seems to affect the Sky Q box
its a strange one, the only way to recover the Sky Q box is a hard reboot (yank the power)

It must be a handshake issue though, because although I get no audio or video, if I switch inputs away from the Sky Q, I do hear about 1 second of audio suddenly spring to life before the input changes

6

This may be a bug with the Sky Q device.
The Vero should deassert when you change source.

1 Like
7

For anybody else who may stumble across a similar issue, there’s 40+ pages of Sky Q issues here:

https://helpforum.sky.com/t5/Sky-Q/No-output-from-Sky-Q-box-when-switching-on/td-p/2841585

Seems to be a known issue. The workaround (until sky issue a fix - don’t hold your breath), seems to be to keep your Sky Q switched on when swapping inputs

Thanks for your awesome help yet again Sam