Devices > Video Cards, Monitors, Televisions, and Projectors
Help me get RGB color PC > Dr HDMI 4k > Sony Z9D
tzr916:
I got both of these working:
WHITE #8 – COPY DOWNSTREAM EDID (with Tv+Denon in the mix)
GREEN #1 – 4k60-444-600M-HDR-BT2020-3D-FULLAUDIO
Had to use DDU in Safe Mode, then just let Windows install nVidia drivers (v456.71). This survives rebooting. If I install latest nVidia driver (v516.94), I get full RGB 4k60 picture but after reboot it goes back to 1024x768. Forcing me to repeat DDU Safe Mode & let Windows install v456.71
But a few problems:
- first, when using GREEN #1, my tv is not recognized as HDR capable! So I have to use COPY DOWNSTREAM which correctly recognizes tv as HDR capable.
- second, if I turn the AVR Off/On, the Tv shows a BLANK screen "no signal" message. AVR passthrough does not work at all. I can turn the tv Off/On no problem, but not the AVR and not both, no matter what order. This completely defeats the purpose of the Dr HDMI device!
Something really strange about the second problem:
- when AVR passthrough isn't working and/or powering the AVR Off/on is resulting in "no signal" on the tv, if I remote desktop into the HTPC and toggle the refresh rate from 60 to 59 (or vice versa), the picture magically appears on the Tv! Until the next time I power the AVR Off/On.
-note that AVR passthrough AND powering AVR+Tv Off/On still works fine with the non-RGB
GREEN #5 – 4k60-420-8b-300M-HDR-BT2020-3D-FULLAUDIO
All I can say is THIS SUCKS
jmone:
Yes it sucks.
What happens if you use DDU (Safe Mode) to uninstall but Don't let Windows do the update to v456.71 and manually do a install of 516.94 (so it is not upgrading from 456.71 to 516.94)?
tzr916:
I might have time on Saturday to try that. Until then, I can just leave the AVR On 24/7, only power the Tv Off/On when required.
I'm just not very confident it will have any effect on the AVR passthrough issue (no signal on tv toggle 59/60 refresh to restore), because it happens with both GREEN#1 4k60-444-600 and WHITE#8 COPY DOWNSTREAM. And I've seen it before during first install and testing of the Dr HDMI 4k.
Something else I'm wondering - Now that COPY DOWNSTREAM is working at 4k60 8bit RGB with HDR, I can see all of the following color formats in the nvidia CP drop down:
RGB
YCbCr444
YCbCr422
YCbCr420
I already know that YCbCr420 doesn't do HDR, but AVR passthrough was working when using that EDID bank. So what if I tried YCbCr444 or YCbCr422 - Would I loose HDR? or loose any picture quality/features? Perhaps one of those plays better with the AVR passthrough?
jmone:
Leave it in RGB. All processing on the HTPC (incl JRVR/madVR) is done in RGB. You could try YCbCr4:4:4 and the pro's and con's are here. You would only move to YCbCr (with either 422 or 420 chroma) if you needed higher than 8-Bit UHD 50/60fps on a 18gps HDMI link ... or have some specific compatibility need (signal compatibility with a display device, external chroma upscaler) etc.
It may be worth seeing if the Denon AVR and/or Sony TV has any firmware updates as it could be an upstream issue. I've previously seen complaints with Denon's on EDID but it was years ago.
tzr916:
I was able to clean nvidia drivers via DDU Safe Mode, physically disconnect PC from network, reboot and install v516.94 directly, and get 4k60 RGB 8bit. And, it survives rebooting the PC, no more 1024x768.
But no change on the AVR passthrough issue. Still get no signal+blank Tv screen when powering AVR Off/On. I can get picture back on Tv screen by toggling GPU refresh 59/60 or 60/59.
Seems I will be leaving my AVR On for the rest of my life.
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