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LAVFilters-0.74.1-20 Dolby Atmos issue again #302

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cmichaelhk opened this issue Aug 3, 2019 · 6 comments
Open

LAVFilters-0.74.1-20 Dolby Atmos issue again #302

cmichaelhk opened this issue Aug 3, 2019 · 6 comments

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@cmichaelhk
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@cmichaelhk cmichaelhk commented Aug 3, 2019

2 months before, installed the nightly build 0.74.1-20(bitstream to av receiver), fixed the dobly atmos problem(no sound after few times seek, receiver keep displaying Dobly Atmos) with UHD Black Hawk Down. But today, when I watch uhd Alita Battle Angel(rip) and uhd Avengers Endgame(iso rip) same problems found again. After that I try Black Hawk Down(rip and original disc with anydvd) agian and it also got no sound after few times seek.

I already tried roll-back the RX480 driver to 19.4.3-apr22 and 19.7.1-july7 still no luck...….

@Nevcairiel

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@Nevcairiel Nevcairiel commented Aug 3, 2019

If LAV didn't change in 2 months, and the issue still came back, its probably something else, and not LAV.

@cmichaelhk

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@cmichaelhk cmichaelhk commented Aug 3, 2019

Yes I know. So I am now reinstall windows and will test again....

@cmichaelhk

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@cmichaelhk cmichaelhk commented Aug 3, 2019

after re-install latest Windows 10 and only install rx480 driver, Lav filter, MPC-BE, same no sound problem found. Will it caused by windows update? As I found the problem in pervious installed windows seem occure after windows updated. And now, my workaround is change to dobly 5.1 then change back to atmos

@cmichaelhk

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@cmichaelhk cmichaelhk commented Aug 5, 2019

I am sorry that I seem found out the problems.
As the yamaha CX-A5100 default 4k mode is mode 2(just like safe mode in pc) that will cause HDMI in low bandwidth so that I think that caused the sound problem when playing 4k hdr content.

How to know you are in low bandwidth mode for me in windows 10? Goto the page that change screen resolution page. If the recommend resolution is 1920x1080 that is in mode 2.
To change back to 4k native mode, please visit
https://www.google.com/amp/s/www.avsforum.com/forum/90-receivers-amps-processors/2963648-how-fix-problem-yamaha-cx-a5100-other-yamaha-avrs-don-t-pass-hdr.html%3famp=1

This fucking setting already cause me confused when I just changed to 4k TV for a years.

P.S. If you got blank screen problem when switch on the PC after change to mode 1, try enable CSM support in BIOS (when I disabled the CSM, my PC with rx480 will not start + blank screen + no beep sound)

@Nevcairiel

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@Nevcairiel Nevcairiel commented Aug 5, 2019

So just to be clear, with it set into proper 4K mode, Atmos now also functions properly?

@cmichaelhk

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@cmichaelhk cmichaelhk commented Aug 6, 2019

Yesterday I test the atmos sound seem ok.....but today sound will lost again.....

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