Originally Posted by DLCPhoto
Yes, that's it.
I power cycled the whole theater, and also turned CMD off, as some have suggested that this might be the source of the problem.
I was then able to reconnect and sync without problem.
Originally Posted by DLCPhoto
The first pattern, which you show in that video, is what I see when I try to load Netflix.
If I then switch inputs on my Marantz SR7010, to try and re-establish Sync, I then got what sounds like the second pattern - very vivid colors, straight lines, sometimes some grainy like areas along the top vertical edge of the picture. I was trying to 're-establish' sync, but this wouldn't work. Had to turn the PJ off and then on again to re-sync.
As I said above, turning CMD off seemed to do the trick.
Originally Posted by rak306
It's definitely not the JVC because JVC has moved on to the RS620 and is not about to do another firmware update or admit it's their issue.
But seriously, 4k hdr from the Roku is 2160p60 4:2:2 12 bit, a legal full bandwidth signal, and not 4:4:4 8 bit. So showing the Samsung works is not relevant, as the format is different.
Besides, the fact that turning off CMD "fixes" the issue ought to tell you where the problem lies.
Originally Posted by lovingdvd
We are going in circles. It doesn't matter what CAUSES the problem - under no circumstances should the JVC HDMI completely freeze up and not be recoverable without power cycling the unit, short of a defect in it's software or firmware, which should be fixed. Yes JVC may not be able to prevent the signal from dropping out or not showing up, but their projector should be able to recover from the condition more gracefully. The fix we are asking for is just that - so we don't have to power cycle the unit to get it working again once it goes haywire.
In my case I have the UB900 which does put out 4K 60 444 for its Home screen, which I can display just fine on the projector. And as I mentioned, this is NOT just in the case of the Roku. It has happened about 1-2 times a month (with every day projector usage) when switching between the UB900 and Comcast X1 STB with the Roku not even in the chain at the time, as I reported here back in October. When you ask why are we blaming the projector when Roku is so buggy (which it is!), THAT is why - it is not confined to the Roku. Tho that said, the Roku definitely triggers it to happen more often. And also as I said, in any event, the projector needs to be able to handle such a case more gracefully instead of going haywire.
Hey guys - I'm following up on the "HDMI going haywire" issue that we were talking about here several months ago with my RS600.
As a quick recap - I would run into this issue every blue moon when watching 4K UHD Blu-rays on the UB900, specifically when switching back to another source. This was tolerable because it was so infrequent. However, I recently started watching Netflix and Amazon Prime Video shows in 4K HDR - and with these streaming services I would get the HDMI haywire issue pretty much every single time it started playback of the show. This would happen with both the Panasonic UB900 and Roku Ultra.
I was recently emailing with
about it, and he suggested I switch the CMD to off. Sure enough, with CMD off I do not have the issue at all. My apologizes to those who suggested this months ago in this thread, saying that it solved it for them too. I'm not sure how I missed or overlooked that.
At any rate, I can confirm that 90%+ of the time I try 4K HDR from Netflix or Amazon off the UB900 or Roku I have this issue, and in the 50-some times I have tested this since turning CMD to off I have never had the issue. Just as a quick test, I recently changed the CMD back to Low and sure enough immediately got the issue again (as would be expected now).
We can say for certain this is NOT the fault of the Roku or UB900, since it happens with both devices. And we can say that even if they are sending something the JVC does not like which it should not be sending, then the JVC should still be handling this more gracefully. The HDMI haywire wouldn't be so bad if you could just say "oh whoops" and switch inputs back and forth and clear it. But the full power cycle makes it a real hassle.
I am waiting to hear back from JVC on why this occurs and what the plan is to correct it. Mike - Any word from them? Since the last time we emailed I now have tested this dozens more times as mentioned above and can conclusively say that CMD off is fine and Low causes the issue (not sure about how). I can even switch to CMD Low AFTER the HDMI sync and its fine - but the problem with that is that I forget after the show to put it back to off before the next HDMI handshake and then the HDMI goes haywire.