I have them both, Only the 5700XT has this problem, my VEGA 64 and my 6800XT don't happens I see that PC facts youtube channel's test that and don't face this problem anytime too,
Only happens when dolby atmos is on,
but when you Setup on 6800XT PCM 5.1 or 7.1 16/24/48/192 this don't happen's, and still decode's atmos sound.
did you guys tried a 2.0 or 2.0b HDMI cable?
i know that this in theory should not be the problem - but please check that
Issue: HDMI link / audio drops when streaming from PC
RX 5700 (w XT bios)
Samsung HW-N950 soundbar (HDMI input)
LG OLED B8 (HDMI ARC)
Possible fixes tried so for:
- AGESA 22.214.171.124 bios update
- Set PCI to GEN3 in bios
- modified Adrenaline 20.12 audio driver
- Installed 18.10.1 audio driver
- disabled Realtek drivers
- reinstalled Radeon drivers after DDU cleanup
- DP adapter (works but you loose HDR with DP 1.2)
FIX that worked:
Make sure you set your LG OLED to use YCbCr 4:2:0 Pixel format and 10 bpc Color Depth.
Before setting 10bpc, the HDR logo appeared every timed i switched from Desktop to 3D HDR content.
When the video card entered idle state (0% use) the HDMI link failed causing black screen. Sometimes for a second and then the connection was reestablished until the link failed completely and i had to switch to another input on my soundbar and then back. The issue manifested in games, PLEX streaming, or without any app (desktop).
After i switched to 10bpc i have no problem. The HDR logo appears only when i turn on the TV (HDR turned on in Display Settings). Atmos works fine, PLEX works fine with both HDR and ATMOS / DTS, gaming works fine.
Please try this and if it works come back with feedback.
There are a lot of complaints out there regarding this issue and i read in similar topic that most of them are using LG OLED displays. Also, i don't think anyone wants to spend an extra 30$ on a DP 1.4 - HDMI adapter witch i also think it works. My DP1.2 adapter solves the problem but it's not HDR capable.
I actually found this interresting things by looking at the amd high definition audio device. I have an rx5600xt and I'm experiencing giga audio dropout on Bitstream to my audio receiver and less but anyway too much on pcm multichannel to my receiver in every application, games, Netflix (onkyo txsr-494). Nothing when I'm on my USB headset, hdmi problem maybe, just falsy hdmi audio controller ? I'm sad because my actual amd card can't do what my gtx 960 was doing easily (transmit audio correctly lol), this is just ridiculous. Actually I'm even more sad because I just found that the "amd high definition audio driver" hasn't been updated since April, this is the same for every released since the 20.7.2. Wtf?
This my first amd card, I'm sad I surely made a mistake...
I'm actually on the 20.11.2, the more stable for playing with a rx5600xt.
The amd high definition audio driver date that window is showing to me is 01/04/2020? And the version is 10.0.1.6. Just after the release of this version (high definition audio driver version of the 20.7.1), amd reported in the 20.7.2, the audio stutter when connected to an av receiver! Guys they never fixed it because the driver never changed since this version.
I can't understand why changing a color depth that is used for hdr screen can actually solve any audio issue through avr... I don't have an hdr screen, only my avr have it on, it transmit the image to basic projector