HDMI audio doesn't work for AMD RX6700 XT

[Sebastian Rettig]

After the recent update to the 5.19.35 kernel (installed on 4th March 2023), the HDMI audio (out) of my AMD RX6700 XT doesn't work anymore. I don't see any devices in Gnome or when listing the devices with `aplay -a`

In the ACPI error message on startup I see:

kernel: snd_hda_intel 0000:01:00.1: no codecs initialized
kernel: hdaudio hdaudioC1D0: no AFG or MFG node found

When I boot with the old 5.19.0.32 kernel version HDMI audio works perfectly.

Ubuntu 22.04.2 LTS
linux-image-5.19.0-35-generic: 5.19.0-35.36~22.04.1

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.19.0-35-generic 5.19.0-35.36~22.04.1
ProcVersionSignature: Ubuntu 5.19.0-32.33~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-32-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 4 19:49:59 2023
InstallationDate: Installed on 2022-04-24 (314 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.19
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.