Ubuntu
pulseaudio package

Kubuntu 22.04, Bluetooth Headphones connect automatically, then immediately disconnect; pulseautio crashes every time

Bug #1971632 reported by Michael Braxner
24
This bug affects 5 people
Affects Status Importance Assigned to Milestone
pulseaudio (Ubuntu)
Fix Released
High
Unassigned
Jammy
Fix Released
Undecided
Unassigned

Bug Description

* Impact

On a fresh install of Kubuntu 22.04, when I turn my properly paired bluetooth headphones on they automatically connect to the system, then immediately disconnect again. The headphones thus have to be manually 're-connected' every time.

* Test case

Connect a bluetooth headset to the computer, try to change the active profile. The selection should be reflected and the quality match, the pairing and service should be stable

* Regression potential

The changes are in the bluetooth a2dp/sbc functions so any potential regression would impact the connectivity with bluetooth devices using an a2dp profile (aptX, SBC, AAC). Check with different devices using the previously listed profiles.

----------------------------

Best as I understand it from the logs (appended below), pulseaudio showing up killed just after the headphones turn up as an unregistered sender ...
4/30/22 7:33 PM systemd pulseaudio.service: Main process exited, code=killed, status=8/FPE

... is responsible for the observed problem, i.e. the disconnect, probably triggered when pulseaudio restarts ...
4/30/22 7:33 PM systemd pulseaudio.service: Scheduled restart job, restart counter is at 2.

So it seems either an internal pulseaudio problem, or a problem triggered by the division by 0 in the bluetooth module ...
4/30/22 7:33 PM kernel traps: bluetooth[8884] trap divide error ip:7f862dc68490 sp:7f862498cc30 error:0 in module-bluez5-device.so[7f862dc66000+9000]

or some combination of the two ... but again, I'm only guessing here.

___________________________________________________________________________________________________

System Logs after switching headphones on:

4/30/22 7:33 PM kernel input: Nat's Flex (AVRCP) as /devices/virtual/input/input31
4/30/22 7:33 PM systemd-logind Watching system buttons on /dev/input/event19 (Nat's Flex (AVRCP))
4/30/22 7:33 PM bluetoothd /org/bluez/hci0/dev_A8_91_3D_DF_A8_F4/fd3: fd(43) ready
4/30/22 7:33 PM rtkit-daemon Supervising 0 threads of 0 processes of 0 users.
4/30/22 7:33 PM rtkit-daemon Successfully made thread 8884 of process 3426 owned by '1000' RT at priority 5.
4/30/22 7:33 PM rtkit-daemon Supervising 1 threads of 1 processes of 1 users.
4/30/22 7:33 PM kernel traps: bluetooth[8884] trap divide error ip:7f862dc68490 sp:7f862498cc30 error:0 in module-bluez5-device.so[7f862dc66000+9000]
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSink/sbc
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSource/sbc
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSink/sbc_xq_453
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSource/sbc_xq_453
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSink/sbc_xq_512
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSource/sbc_xq_512
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSink/sbc_xq_552
4/30/22 7:33 PM systemd pulseaudio.service: Main process exited, code=killed, status=8/FPE
4/30/22 7:33 PM bluetoothd Endpoint unregistered: sender=:1.126 path=/MediaEndpoint/A2DPSource/sbc_xq_552
4/30/22 7:33 PM systemd pulseaudio.service: Failed with result 'signal'.
4/30/22 7:33 PM systemd pulseaudio.service: Consumed 2min 20.027s CPU time.
4/30/22 7:33 PM acpid input device has been disconnected, fd 20
4/30/22 7:33 PM systemd pulseaudio.service: Scheduled restart job, restart counter is at 2.
4/30/22 7:33 PM systemd Stopped Sound Service.
4/30/22 7:33 PM systemd pulseaudio.service: Consumed 2min 20.027s CPU time.
4/30/22 7:33 PM systemd Starting Sound Service...
4/30/22 7:33 PM rtkit-daemon Successfully made thread 8889 of process 8889 owned by '1000' high priority at nice level -11.
4/30/22 7:33 PM rtkit-daemon Supervising 1 threads of 1 processes of 1 users.
4/30/22 7:33 PM pulseaudio Stale PID file, overwriting.
4/30/22 7:33 PM rtkit-daemon Supervising 1 threads of 1 processes of 1 users.
4/30/22 7:33 PM rtkit-daemon Successfully made thread 8890 of process 8889 owned by '1000' RT at priority 5.
4/30/22 7:33 PM rtkit-daemon Supervising 2 threads of 1 processes of 1 users.
4/30/22 7:33 PM rtkit-daemon Supervising 2 threads of 1 processes of 1 users.
4/30/22 7:33 PM rtkit-daemon Successfully made thread 8891 of process 8889 owned by '1000' RT at priority 5.
4/30/22 7:33 PM rtkit-daemon Supervising 3 threads of 1 processes of 1 users.
4/30/22 7:33 PM systemd Started Sound Service.
4/30/22 7:33 PM pulseaudio Could not find org.bluez.BatteryProviderManager1.RegisterBatteryProvider(), is bluetoothd started with experimental features enabled (-E flag)?
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSink/sbc
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSource/sbc
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSink/sbc_xq_453
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSource/sbc_xq_453
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSink/sbc_xq_512
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSource/sbc_xq_512
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSink/sbc_xq_552
4/30/22 7:33 PM bluetoothd Endpoint registered: sender=:1.246 path=/MediaEndpoint/A2DPSource/sbc_xq_552

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: pulseaudio 1:15.99.1+dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Wed May 4 17:46:37 2022
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/25/2022
dmi.bios.release: 1.14
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.14.0
dmi.board.name: 05XYW7
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.14.0:bd03/25/2022:br1.14:svnDellInc.:pnXPS159500:pvr:rvnDellInc.:rn05XYW7:rvrA00:cvnDellInc.:ct10:cvr:sku097D:
dmi.product.family: XPS
dmi.product.name: XPS 15 9500
dmi.product.sku: 097D
dmi.sys.vendor: Dell Inc.
modified.conffile..etc.pulse.daemon.conf: [modified]
mtime.conffile..etc.pulse.daemon.conf: 2022-04-29T21:03:20.101513

See original description
Revision history for this message
Michael Braxner (braxner-michael) wrote :
Revision history for this message
Michael Braxner (braxner-michael) wrote :

Igor Kovalenko managed to identify the problem, and and fixed it. See https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1354 for details.

Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in pulseaudio (Ubuntu):
status: New → Confirmed
Revision history for this message
Geoff Jacobsen (geoffj) wrote :

I get the same behaviour on ubuntu 22.04

Revision history for this message
Sebastien Bacher (seb128) wrote :

The is in pulseaudio 16.0+ which is in kinetic

Changed in pulseaudio (Ubuntu):
importance: Undecided → High
status: Confirmed → Fix Released
description: updated
Revision history for this message
Sebastien Bacher (seb128) wrote :

And I cherrypicked the fixes for a SRU to 22.04 now

Revision history for this message
Timo Aaltonen (tjaalton) wrote : Please test proposed package

Hello Michael, or anyone else affected,

Accepted pulseaudio into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pulseaudio/1:15.99.1+dfsg1-1ubuntu2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in pulseaudio (Ubuntu Jammy):
status: New → Fix Committed
tags: added: verification-needed verification-needed-jammy
Revision history for this message
ogooreck (kjchmielewski) wrote (last edit ):

Hello,

I installed the package from proposed and it fixes bug for me.

pulseaudio:
  Installed: 1:15.99.1+dfsg1-1ubuntu2
  Candidate: 1:15.99.1+dfsg1-1ubuntu2
  Version table:
 *** 1:15.99.1+dfsg1-1ubuntu2 400
        400 http://pl.archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1:15.99.1+dfsg1-1ubuntu1 500
        500 http://pl.archive.ubuntu.com/ubuntu jammy/main amd64 Packages

before installing package: after switching off and then switching on bt headphones (previously paired with my laptop bt device) connect automatically, then immediately disconnect

after installing package: after switching off and then switching on bt headphones (previously paired with my laptop bt device) connect automatically and stay connected, sound working properly.

Jeremy Bícha (jbicha)
tags: added: verification-done verification-done-jammy
removed: verification-needed verification-needed-jammy
Revision history for this message
Chris Halse Rogers (raof) wrote : Update Released

The verification of the Stable Release Update for pulseaudio has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package pulseaudio - 1:15.99.1+dfsg1-1ubuntu2

---------------
pulseaudio (1:15.99.1+dfsg1-1ubuntu2) jammy; urgency=medium

  * debian/patches/git_sbc_limit.patch, debian/patches/git_sbc_frame.patch:
    - cherrypick !695 from the upstream stable branch to fix disconnect
      and segfault issues with some bluetooth devices (lp: #1971632)
  * debian/patches/git_sbc_decode.patch:
    - cherrypick a fix for the service segfaulting sometime after switching
      to HFP profile (lp: #1987523)

 -- Sebastien Bacher <email address hidden> Wed, 07 Sep 2022 16:09:58 +0200

Changed in pulseaudio (Ubuntu Jammy):
status: Fix Committed → Fix Released
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