Public bug reported:
I am attempting to add an I2S DAC for line level output on a Raspberry
Pi 5.
The hardware is a Pimoroni Audio DAC Shim which uses the
dtoverlay=hifiberry-dac
The hardware, when used with Raspberry Pi OS (Bookworm) configured per
instructions works fine, this I2S output DAC appears in the sound output
selector pull-down, line-out works, so hardware and connections are
good.
When installed and configured on Ubuntu 23.10 Desktop, fully updated to
current, the I2S DAC output does appear in the sound pull-down selector
window, so the I2S DAC output can not be selected, and is not
functional.
Configuration consists of adding the following to the /boot/firmware/config.txt
file:
dtparam=i2s=on
dtoverlay=hifiberry-dac
When a user signs into Ubuntu, a pair of error messages appears 25 times
in the CLI ttyAMA10 output:
[ 23.126215] designware-i2s 1f000a0000.i2s: ASoC: error at
snd_soc_dai_set_bclk_ratio on 1f000a0000.i2s: -22
[ 23.136303] HifiBerry DAC: ASoC: error at snd_soc_link_hw_params on
HifiBerry DAC: -22
This seems to reference some kind of failure to initialize an I2S bit
clock ratio parameter on the part of designware-i2s, which causes
HiFiBerry DAC to error out.
~$ lsb_release -rd
No LSB modules are available.
Description: Ubuntu 23.10
Release: 23.10
All updates are current as of 2024 FEB 29
the dtoverlay=hifiberry-dac is the one distributed with the Ubuntu 23.10
Desktop release.
ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.5.0-1011.14-raspi 6.5.8
Uname: Linux 6.5.0-1011-raspi aarch64
ApportVersion: 2.27.0-0ubuntu5
Architecture: arm64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: graham 1907 F.... wireplumber
/dev/snd/seq: graham 1894 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Feb 29 16:08:26 2024
PackageArchitecture: all
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 mantic wayland-session
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https://bugs.launchpad.net/bugs/2055479
Title:
I2S DAC not loading
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