Public bug reported:
Hello,
I am experiencing a persistent audio issue where my HDMI audio via AMD
Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] is completely locked
and shown as "Unavailable" (with a red cross icon) in pavucontrol, even
though the monitor has built-in speakers.
Here is the troubleshooting summary of what has been verified and done so far:
1. Graphic Driver Status: Verified with 'lspci -k'. The 'amdgpu' kernel driver
is fully loaded and active. Secure Boot issues have been resolved.
2. Audio Server: PulseAudio has been fully replaced/purged, and PipeWire +
WirePlumber are active and running correctly at user/global scope.
3. ALSA Layer: In alsamixer, the HDA ATI HDMI card is selected, but the S/PDIF
/ IEC958 channels appear muted/off or locked in Pro-Audio mode.
4. Profiles: Running 'pactl list short sinks' shows the card stuck in
'pro-output' profiles (e.g., pro-output-3, pro-output-9). Forcing the profile
to 'hdmi-stereo' via pactl executes successfully but pavucontrol still marks
all HDMI ports as "unavailable".
5. Hardware: Tested with hotplugging the HDMI cable, power-cycling the monitor,
and verified the monitor's OSD settings (internal speakers are enabled and
unmuted).
It seems WirePlumber fails to parse the EDID/handshake correctly for
this monitor on the amdgpu framework, forcing it into an unusable state.
Hardware Specs:
- GPU: MSI Radeon RX 570 Armor 8G OC (Ellesmere)
- Motherboard: MSI MS-7C52
- Audio System: PipeWire with WirePlumber
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.8.0-136.136.2-lowlatency 6.8.12
Uname: Linux 6.8.0-136-lowlatency x86_64
ApportVersion: 2.28.2-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Mon Jul 27 03:32:56 2026
InstallationDate: Installed on 2025-10-16 (283 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: Micro-Star International Co., Ltd. MS-7C52
PackageArchitecture: all
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/30/2024
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 3.N2
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B450M-A PRO MAX (MS-7C52)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr3.N2:bd08/30/2024:br5.17:svnMicro-StarInternationalCo.,Ltd.:pnMS-7C52:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnB450M-APROMAX(MS-7C52):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C52
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2025-12-29T23:33:03.695387
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2161857
Title:
HDMI audio port shown as "Unavailable" (Muted/Red Cross) on AMD
Ellesmere (RX 570) under PipeWire/WirePlumber
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