Originally Posted by HDfury
- You can do as you want, when you add our device in any system you need AT LEAST one more HDMI cable, so the fact that cables worked before means not much until at least that extra one is tested.
- 4K60 can be 300MHz at min and 600MHz at max, normally no cable have issue for anything lower than 600MHz, but given the reviews posted for your cables, then I have to tell you that you should consider changing them, because even they will work for what you want to do now, they won't work for 600MHz/18Gbps. It is quite simple to test cable, take a source where you have a full control of output signal and connect it straight to the display and use that setup to control each cable one by one. that is a minimum to do in any 4K setup that have issue. Source MUST send 4K60 422 12b or 4K60 444 8b, nothing else is relevant for cable testing, this is actually why you see some review of people saying, "the cable works great for 4K60 HDR", while most of the time 4K60 HDR is 375 MHz and problem start around 600MHz for most cables. Anyway this is all general recommendation for OPTIMAL results means for true 18Gbps support ,which you might not need but I have to tell you about.
About the issue:
- By checking your config I noticed that the one you report working use 1080p 422 12b and those failing use 1080p 444 12b. So please set the unit in Custom Scaling mode and set the option as per the picture in attachment. then see if it helps. (if that works you can try replacing 422 by RGB to see if it still works as you wrote above that you once saw that going thru)
about those last two sentences below:
For clarity, EDID is a file that is present on any HDMI input, it list what the input support in terms of audio/video format.
"1080p23.976 RGB L 12b 111MHz" is the signal description (it's the current signal traveling from source to display)
TX1 is set to copy TX0 in your config, so yes you are in splitter mode. but that's not the issue here. I guess the issue is that your TV prolly does not support everything, so some low timing might fail on it that's why if you just copy it's edid, it works, because those low signal bandwidth are then excluded. similarly I suppose that if you set Automix Algo to MIN VIDEO, it would work as well.
Anyway, just try the custom scaling option as I wrote it, this should give some hints and then give me the exact BRAND/MODEL of both PJ and TV so I can check their usermanual and based on your results we will check the TV EDID timing listed and that should shed some light on the issue.
If you have time, try an older firmware 0.33 or 0.34 just to make sure it does not come from last firmware as we are working on some issues currently that did not exist before 0.35 version. (do that at last test, first check custom scaling)
Projector: Optoma UHZ65
TV: Philips 42PFL7695H / 12
I configured the SCALER CUSTOM as per your instructions, but it seems to me that Vertex2 is not working as intended.
When only one display is powered ON (either PJ or TV) all is working well.
But with the two displays powered on I get the following:
Export: “TV ON - PJ ON - 21 - Oppo Menu.txt”
I get “1080P59.940 444 BT709 8b 148MHz” signal going to the TV while navigating through the Oppo menu, and all is working well.
Then I play a BD, HDMI handshake, PJ works well, but TV goes Blank.
The Export is: “TV ON - PJ ON - 22 - BD Menu.txt”
Now the signal going to TV is: “1080P23.976 444 BT709 12b 111MHz”.
Custom Scaling as per GUI, don’t seem to work (444 CS signal instead of 422). Also I get confused when I see on Export: "tx1scale4k30downscale": "off" Is that right? or should be "on" ?
I Play a MKV test file 4K60 downloaded from Youtube and the TV recovers and plays well after the hdmi handshake.
Export file: “TV ON - PJ ON - 31 - Playing MKV 4K60P OK BOTH.txt”
Now, the signal TX1 to TV has changed to: “1080P59.940 444 BT709 8b 148MHz “
So my thoughts, as far as I understand, are:
- Vertex2 is not working well for Custom Scaling regarding the forced downscale TX1 to CS 422
- My TV does not handle well, for any reason, the change to 23.976fps 444, but should not be related to cable quality as it works well with other higher speeds signals.
I will check later with older firmwares 0.33 or 0.34, when I have time, unless you instruct me to do otherwise.
Many thanks for your great support!
Could the TV problem be related to HDCP? No idea really about HDCP, but some days ago when I started with the first tests I got continuous hdmi handshakes on the Projector (each minute or so). I then see on the Vertex2 OLED display that the Signal to TV said: “HDCP Error….” or the like. After Power recycling the Vertex2 this anomaly didn’t occur anymore. Perhaps was caused by powering Off the TV during the tests in a bad moment of time.