Originally Posted by markswift2003
I did think that, even though it shouldn't matter with YST mode on, however the Vertex is in the cinema system and this evening I brought the Zidoo into another room which just has a Samsung TV via a Denon 7200, no Vertex, and the settings remain persistent.
I even booted the Zidoo before the Denon & the TV were switched on and it was still ok.
As for the syncing - that's completely different behaviour to mine too - both in the Den (Z9S > 7200 > Samsung TV) and the cinema (Z9S > Vertex > 8500 > JVC PJ) it doesn't resync if the content matches the desktop.
I have had situations in the past when the Zidoo has defaulted to 1080p60 after I've been moving it about and I always figured it was due to there not being an EDID sink available at boot, and obviously the Vertex takes care of that, but it would seem that isn't the case - I can cold boot with no connection, then make the connection and it'll still be at 4K23 with 23 & 59Hz modes available.
It's an odd one for sure.
But yes, let's see what happens when you hang the Vertex off it...
I can't see why this would make a difference, but it's worth a go - try replicating my settings:
Ignore EDID on
Switch frame rate and resolution on
HDMI mode 3840x2160p23
SDR to HDR on
Deep Colour Priority 10-bit
Colour Space YCbCr 444
HDMI range 16-235
I know there's nothing special in that list at all, but all I can say is it works here and even when booting from cold with no HDMI cable connected (just tried that too!).
So I had some time to watch some material on the Z9S in my PJ / Vertex system (which is where it will stay once I get it ironed out) last night.
First off, I checked the Vertex timing info on 23hz playback for you - 23.974.
59hz = 59.932 (fwiw, my shield after 7.2 FW shows 59.931 - maybe it always did...)
So while I never actually checked the power on / off resolution persistence, I did discover some odd behavior.
1) At one point, with desktop resolution at 1080/59, I could play DVD rips (29hz ones, which play at 59) w/out a resync (they play at 1080/23 or 59 depending on original frame rate). I could also return to the "poster wall" or home menu w/out a resync from these rips. Oddly, I couldn't play a BR rip that also outputs 1080/59 without a resync (which is what normally happens). I checked the Zidoo "info" box on both files (DVD and BR) and they were both in the 1080/59 444 10bit 709 output mode.
2) Related to above, I found that at some point, the above DVD rips started re-syncing again upon playback (like the BR files, and like what I'd been seeing in the other system), but while "quick settings" still showed 1080/59 as the output mode. Checked vertex OSD - it shows 60, not 59. But earlier, the Vertex showed 59 (which is what it should have been). So there are some issues with the Zidoo keeping track of frame rates it seems (resolution seems to always be what you're expecting).
I did observe what subjectively I'd call great image quality - compared a few clips with the Shield, and it's a tough call, but I think they are close to indistinguishable on 1080 material (didn't try any 4K HDR at this time). Zidoo has the edge for DVD rips IMO, which is great news for me since I have a bunch of DVD era (or before...) music concerts.
While not conclusive by any means, I'll say I didn't see any lipsync error (which I commonly see on Shield / Kodi / SPMC / Plex etc...) from time to time. This is especially bothersome on concert music rips, since even a small error is usually visible (and might not be in a movie), as when the drummer hits a cymbal, you can instantly tell the timing is off. Some files themselves have this in it and the only fix is offset, but I find (with shield and all those players mentioned) I see different results depending on the player sometimes. Zidoo looks good so far...
Didn't have any playback issues or stutters, or any other unexpected behavior (except one out of the blue HDM resync - but I've had those before here and there with other sources in use...too many HDMI boxes in line, who knows where that issue is).
Which leads me to ask why you have your Vertex between the Z9S and your AVR, as opposed to at the output of the AVR? Or at least that's how I understood your post.
And regarding your settings, mine are the same with the exception of the desktop resolution - I will say that could be it, as mine reverts to 4K23 after a reboot. Could just be that the resolution that you chose is the failsafe (23hz being low bandwidth) 4K resolution? Or at least a resolution that IS persistent. I'll play with mine and see if 4K23 sticks - maybe you can try 1080/59 and see what happens...
Thanks for taking the time to help with this.