Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-ucm-conf (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2084824
Title:
Opening ALSA device fails on sof-soundwire resulting in Dummy Output
Status in alsa-ucm-conf package in Ubuntu:
Confirmed
Bug description:
I upgraded releases from 24.04 to 24.10 and found that my sound was
not working anymore. My previous sound outputs go away and all I see
is Dummy Output. After a long time debugging I tracked it to the
package alsa-ucm-conf. By installing an older version of the package
my sounds works again (after a pipewire restart)
* alsa-ucm-conf_1.2.10-1ubuntu5_all.deb (audio works)
* alsa-ucm-conf_1.2.10-1ubuntu5.1_all.deb (NO SOUND OUTPUTS)
* alsa-ucm-conf_1.2.10-1ubuntu6_all.deb (NO SOUND OUTPUTS)
Looking at the pipewire logs was of limited use, it basically opened
the devices and then closed them. I tried installing pulseaudio
instead of pipewire, but then I still got initialization failure for
the sound devices. I tried playing directly using aplay and speaker-
test, all of which work on 24.04, but not on 24.10. This got me to
thinking it is either drivers or base ALSA, so I tested out loading
the newer alsa packages on 24.04 and as soon as I loaded the new alsa-
ucm-conf it failed in the same way. Loading it back to the original
version fixed it, and so I loaded the 1.2.10-1ubuntu5 version on 24.10
and my sound suddenly works again :-).
=== More info ===
lsb_release -rd
Description: Ubuntu 24.10
Release: 24.10
apt-cache policy alsa-ucm-conf
alsa-ucm-conf:
Installed: 1.2.10-1ubuntu6
Candidate: 1.2.10-1ubuntu6
Version table:
*** 1.2.10-1ubuntu6 500
500 http://us.archive.ubuntu.com/ubuntu oracular/main amd64 Packages
500 http://us.archive.ubuntu.com/ubuntu oracular/main i386 Packages
100 /var/lib/dpkg/status
!!DMI Information
!!---------------
Manufacturer: Dell Inc.
Product Name: XPS 13 9340
Product Version:
Firmware Version: 1.8.0
System SKU: 0C87
Board Vendor: Dell Inc.
Board Name: 0GT2CK
!!ALSA Version
!!------------
Driver version: k6.11.0-8-generic
Library version: 1.2.12
Utilities version: 1.2.11
!!Kernel Information
!!------------------
Kernel release: #8-Ubuntu SMP PREEMPT_DYNAMIC Mon Sep 16 13:41:20 UTC 2024
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes
!!ALSA Version
!!------------
Driver version: k6.11.0-8-generic
Library version: 1.2.12
Utilities version: 1.2.11
!!Loaded ALSA modules
!!-------------------
snd_soc_sof_sdw (card 0)
snd_usb_audio (card 1)
!!Sound Servers on this system
!!----------------------------
PipeWire:
Installed - Yes (/usr/bin/pipewire)
Running - Yes
No sound servers found.
!!Soundcards recognised by ALSA
!!-----------------------------
0 [sofsoundwire ]: sof-soundwire - sof-soundwire
DellInc.-XPS139340--0GT2CK
1 [C960 ]: USB-Audio - HD Webcam eMeet C960
EMEET HD Webcam eMeet C960 at usb-0000:00:14.0-1.1.2,
high speed
!!PCI Soundcards installed in the system
!!--------------------------------------
0000:00:1f.3 Multimedia audio controller [0401]: Intel Corporation Meteor
Lake-P HD Audio Controller [8086:7e28] (rev 20)
Subsystem: Dell Device [1028:0c87]
!!Aplay/Arecord output
!!--------------------
APLAY
**** List of PLAYBACK Hardware Devices ****
card 0: sofsoundwire [sof-soundwire], device 2: Speaker (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 5: HDMI1 (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 6: HDMI2 (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 7: HDMI3 (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
ARECORD
**** List of CAPTURE Hardware Devices ****
card 0: sofsoundwire [sof-soundwire], device 3: Amp feedback (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 4: Microphone (*) []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: C960 [HD Webcam eMeet C960], device 0: USB Audio [USB Audio]
Subdevices: 0/1
Subdevice #0: subdevice #0
!!Packages installed
!!--------------------
ii alsa-topology-conf 1.2.5.1-3
all ALSA topology configuration files
ii alsa-ucm-conf
1.2.10-1ubuntu6 all ALSA Use Case Manager
configuration files
ii alsa-utils
1.2.11-1ubuntu1 amd64 Utilities for
configuring and using ALSA
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