HDMI (E)arc (LG C5 + Marantz Cinema 40 avr) screen flikker and audio cut outs

[DeadDevil6210]

Detailed Reproduction Path

Hi awawa-dev

Since hyperhdr 21 I have noticed an issue with hyperhdr 22,

This is with the following setup
TV: LG C5 55 inch (using hdmi 1 (no e-arc) and HDMI 2 (with e-arc)
Marantz cinema 40 AVR (using primairy out for my LG TV and secundairy OUT for hyper har
Ezcoo 12H21 HDMI splitter on the Hyperhdr output (to get no conflict on my marantz avr)
Raspberry Pi 4 running hyperhdr
MS2131S screen capture stick in the raspberry pi 4

when I plug the cable from my avr to tv's hdmi 2 e-arc port i notice cut outs screen flikker etc, Most of the time this recovers but also at a certain point the screen stays black and I stil see the light going and have audio going through my HDMI port to the avr

When i switch the cable from my avr to any of the ports on my tv that doesn't support E-arc there is no issue, It seems that something is broken but I don't know what If you need more information on this I'm willing to help you out but at this moment I'm on a house moving so reaction could have some delay,

With Hyperhdr 21 I didn't have this issue and the work around is just don't use the e-arc port but I can understand that some users (me including) like to have there audio hardware on the e-arc port)

I don't know for sure if this is also on the older ARC type hdmi ports since I have a dolby atmos setup and use only the e-arc standard

Have you tested the latest Github Action/beta build?

No, I am only using the official stable release

Did this work in a previous stable version?

Yes, it worked in the previous version

Platform

Raspberry Pi 4

Capture Device / Grabber

Other USB Grabber (provide model in the "Detailed Reproduction Path")

LED Driver

Neopixel WS281x/SK6812 (GPIO/FTDI)

System About Info

Version

22.0.0

Build source

(HEAD detached at v22.0.0.0) (Awawa-2ed4c00/e5bda28-1788221035)

Build date

Sep 1 2026 00:36:06

Main UI components

Bootstrap 5, AdminLTE, JQuery, JSON-Editor, Vanilla Picker, jQuery.i18n, Download, Gijgo

System info

HyperHDR Server:

• Build: (HEAD detached at v22.0.0.0) (Awawa-2ed4c00/e5bda28-1788221035)
• Build time: Sep 1 2026 00:36:06
• Git Remote: https://github.com/awawa-dev/HyperHDR
• Version: 22.0.0
• UI Lang: auto (BrowserLang: en-US)
• Avail Capt: Linux (V4L2)
• Database: read/write

HyperHDR Server OS:

• Distribution: Debian GNU/Linux 13 (trixie)
• Architecture: arm64
• CPU Type: Raspberry Pi 4 Model B Rev 1.5
• CPU Hardware: c03115
• Kernel: linux (6.18.39+rpt-rpi-v8 (WS: 64))
• Qt Version: 6.8.3
• OpenSSL: OpenSSL 3.0.18 30 Sep 2025
• Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/27.0 Safari/605.1.15

Application Log

There is no visible log about the cut out, It seems to be something hardware technically that my raspberry Pi 4 and hyperhdr doesn't notice in log

Validation Check

• I understand that my issue will be automatically closed if logs are missing/incomplete or description is insufficient.