** Description changed:
+ [ Impact ]
+
Confirming reports made in the UbuntuMATE forums.
HDMI audio no longer shows as available on kernels beginning with
5.13.0-1011
After reverting to kernel 5.13.0-1008 HDMI audio is available.
Pi4 4GB
ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: linux-image-5.13.0-1008-raspi 5.13.0-1008.9
ProcVersionSignature: Ubuntu 5.13.0-1008.9-raspi 5.13.14
Uname: Linux 5.13.0-1008-raspi aarch64
ApportVersion: 2.20.11-0ubuntu71
Architecture: arm64
CasperMD5CheckResult: unknown
CurrentDesktop: MATE
Date: Wed Jan 12 10:56:22 2022
ImageMediaBuild: 20201028
ProcEnviron:
- LANGUAGE=en_US
- PATH=(custom, no user)
- XDG_RUNTIME_DIR=<set>
- LANG=en_US.UTF-8
- SHELL=/bin/bash
+ LANGUAGE=en_US
+ PATH=(custom, no user)
+ XDG_RUNTIME_DIR=<set>
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
SourcePackage: linux-raspi
UpgradeStatus: Upgraded to impish on 2021-09-26 (107 days ago)
+
+ [ Test Case ]
+
+ Boot Ubuntu MATE *or* Ubuntu Desktop with fkms enabled (instead of kms).
+
+ $ cat $ cat /proc/asound/cards
+ 0 [Headphones ]: bcm2835_headpho - bcm2835 Headphones
+ bcm2835 Headphones
+
+ Correct output should be:
+ $ cat /proc/asound/cards
+ 0 [b1 ]: bcm2835_hdmi - bcm2835 HDMI 1
+ bcm2835 HDMI 1
+ 1 [Headphones ]: bcm2835_headpho - bcm2835 Headphones
+ bcm2835 Headphones
+
+ [ Fix ]
+
+ Cherry pick missing commit ("ARM: dts: bcm2835_audio missing firmware
+ reference") from raspberrypi linux.
+
+ [ Where Problems Could Occur ]
+
+ It's a change to the audio portion of the bcm270x DTB so problems will
+ likely be audio related, like no output device at all.
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https://bugs.launchpad.net/bugs/1957198
Title:
HDMI audio no longer working on Pi4 after 5.13.0-1011
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