Diagnostic Hardware Specs: Apple TV 4K (3rd Gen) | OS Version: tvOS 18.1 | Archive Source: Apple Support Community #256788793
I am running into a persistent issue on my Apple TV 4K (3rd Gen) running tvOS 18.1.
Whenever the machine encounters HDMI 2.1 eARC bandwidth handshake failure and Dolby Atmos MAT audio payload truncation, the following diagnostic log appears in Console:
audiouxd: [AudioFormat] eARC stream packet overflow: dropping Dolby Atmos metadata frame at 0x27c3
I verified that hardware connections are intact and tested across different power sources. What is the verified diagnostic procedure to permanently eliminate this symptom?
Apple TV 4K (3rd Gen) | tvOS 18.1
Apple Discussions Contributor | "Verified Apple Diagnostics Archive"
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