i dont see below patch should i create one
sunny@sunny-XPS-15-9510:~$ cd /etc/systemd/user/pipewire-pulse.service.d/
bash: cd: /etc/systemd/user/pipewire-pulse.service.d/: No such file or directory
sunny@sunny-XPS-15-9510:~$
RegardsAbhay Sapru+919930653403
On Wednesday, 4 March 2026 at 07:05:38 pm IST, Charles
<[email protected]> wrote:
** Description changed:
+ Temporary workaround:
+
+ Installing
+ [Service]
+ SystemCallFilter=lsm_get_self_attr lsm_set_self_attr lsm_list_modules
+
+ To /etc/systemd/user/pipewire-pulse.service.d/lsm-syscalls.conf and then
+ run systemctl --user daemon-reload && systemctl --user restart pipewire-
+ pulse
+
+ ---------------------
+
System:
Ubuntu 26.04 (Resolute Raccoon - development branch)
Kernel: 6.19.0-6-generic
Laptop: Dell XPS 15 9510
Issue:
Audio is not working. The system tray shows:
“Not connected to PulseAudio server”.
pipewire.service and wireplumber.service are running normally.
However, pipewire-pulse.service crashes immediately with:
Active: failed (Result: core-dump)
signal=SYS
Systemd shows:
pipewire-pulse.service: Failed with result 'core-dump'
Start request repeated too quickly.
Because pipewire-pulse is not running, no audio devices are available.
This appears to be a regression in Ubuntu 26.04 development branch.
systemctl --user status pipewire → running
systemctl --user status wireplumber → running
systemctl --user status pipewire-pulse → core-dump (signal=SYS)
-
1) sunny@sunny-XPS-15-9510:~$ systemctl --user status pipewire
● pipewire.service - PipeWire Multimedia Service
- Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; preset:
enabled)
- Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
- Invocation: ed405918e4764f7cab8e8423ab0858c8
+ Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; preset:
enabled)
+ Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
+ Invocation: ed405918e4764f7cab8e8423ab0858c8
TriggeredBy: ● pipewire.socket
- Main PID: 4214 (pipewire)
- Tasks: 3 (limit: 34631)
- Memory: 7.6M (peak: 10.8M)
- CPU: 289ms
- CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/pipewire.service
- └─4214 /usr/bin/pipewire
+ Main PID: 4214 (pipewire)
+ Tasks: 3 (limit: 34631)
+ Memory: 7.6M (peak: 10.8M)
+ CPU: 289ms
+ CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/pipewire.service
+ └─4214 /usr/bin/pipewire
Feb 23 09:25:00 sunny-XPS-15-9510 systemd[4182]: Started pipewire.service -
PipeWire Multimedia Service.
- sunny@sunny-XPS-15-9510:~$
+ sunny@sunny-XPS-15-9510:~$
2) sunny@sunny-XPS-15-9510:~$ systemctl --user status wireplumber
● wireplumber.service - Multimedia Service Session Manager
- Loaded: loaded (/usr/lib/systemd/user/wireplumber.service; enabled;
preset: enabled)
- Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
- Invocation: decaefb1bedf4e20a43ada3b30f1d9ce
- Main PID: 4228 (wireplumber)
- Tasks: 6 (limit: 34631)
- Memory: 29.8M (peak: 31M)
- CPU: 184ms
- CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/wireplumber.service
- └─4228 /usr/bin/wireplumber
+ Loaded: loaded (/usr/lib/systemd/user/wireplumber.service; enabled;
preset: enabled)
+ Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
+ Invocation: decaefb1bedf4e20a43ada3b30f1d9ce
+ Main PID: 4228 (wireplumber)
+ Tasks: 6 (limit: 34631)
+ Memory: 29.8M (peak: 31M)
+ CPU: 184ms
+ CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/wireplumber.service
+ └─4228 /usr/bin/wireplumber
Feb 23 09:25:00 sunny-XPS-15-9510 systemd[4182]: Started wireplumber.service
- Multimedia Service Session Manager.
Feb 23 09:25:01 sunny-XPS-15-9510 wireplumber[4228]: wp-device: SPA handle
'api.libcamera.enum.manager' could not be loaded; is it installed?
Feb 23 09:25:01 sunny-XPS-15-9510 wireplumber[4228]: s-monitors-libcamera:
PipeWire's libcamera SPA plugin is missing or broken. Some camera types may not
be supported.
- sunny@sunny-XPS-15-9510:~$
+ sunny@sunny-XPS-15-9510:~$
3) sunny@sunny-XPS-15-9510:~$ systemctl --user status pipewire-pulse
× pipewire-pulse.service - PipeWire PulseAudio
- Loaded: loaded (/usr/lib/systemd/user/pipewire-pulse.service; enabled;
preset: enabled)
- Active: failed (Result: core-dump) since Mon 2026-02-23 09:31:56 IST;
26min ago
- Duration: 1.126s
- Invocation: 0345c4c831d44691a02963d7cbef80bc
+ Loaded: loaded (/usr/lib/systemd/user/pipewire-pulse.service; enabled;
preset: enabled)
+ Active: failed (Result: core-dump) since Mon 2026-02-23 09:31:56 IST;
26min ago
+ Duration: 1.126s
+ Invocation: 0345c4c831d44691a02963d7cbef80bc
TriggeredBy: × pipewire-pulse.socket
- Process: 27725 ExecStart=/usr/bin/pipewire-pulse (code=dumped, signal=SYS)
- Main PID: 27725 (code=dumped, signal=SYS)
- Mem peak: 2.5M
- CPU: 16ms
+ Process: 27725 ExecStart=/usr/bin/pipewire-pulse (code=dumped, signal=SYS)
+ Main PID: 27725 (code=dumped, signal=SYS)
+ Mem peak: 2.5M
+ CPU: 16ms
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Failed with result 'core-dump'.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Scheduled restart job, restart counter is at 7.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Start request repeated too quickly.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Failed with result 'core-dump'.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: Failed to start
pipewire-pulse.service - PipeWire PulseAudio.
sunny@sunny-XPS-15-9510:~$
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: pipewire-pulse 1.5.84-1ubuntu2
ProcVersionSignature: Ubuntu 6.19.0-6.6-generic 6.19.2
Uname: Linux 6.19.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC0: sunny 4228 F.... wireplumber
- /dev/snd/seq: sunny 4214 F.... pipewire
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: sunny 4228 F.... wireplumber
+ /dev/snd/seq: sunny 4214 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Mon Feb 23 10:01:29 2026
InstallationDate: Installed on 2021-12-06 (1540 days ago)
InstallationMedia: Xubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
MachineType: Dell Inc. XPS 15 9510
PactlListSinks:
- Error: command ['pactl', 'list', 'sinks'] failed with exit code 1:
Connection failure: Connection refused
- pa_context_connect() failed: Connection refused
+ Error: command ['pactl', 'list', 'sinks'] failed with exit code 1:
Connection failure: Connection refused
+ pa_context_connect() failed: Connection refused
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: pipewire
UpgradeStatus: Upgraded to resolute on 2026-01-12 (42 days ago)
dmi.bios.date: 12/02/2025
dmi.bios.release: 1.44
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.44.1
dmi.board.name: 01V4T3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.44.1:bd12/02/2025:br1.44:svnDellInc.:pnXPS159510:pvr:rvnDellInc.:rn01V4T3:rvrA00:cvnDellInc.:ct10:cvr:sku0A61:
dmi.product.family: XPS
dmi.product.name: XPS 15 9510
dmi.product.sku: 0A61
dmi.sys.vendor: Dell Inc.
--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/2142428
Title:
pipewire-pulse crashes when snap clients connect because libapparmor
5.0's new lsm_get_self_attr syscall is blocked by the service's
seccomp filter
Status in apparmor package in Ubuntu:
Confirmed
Status in pipewire package in Ubuntu:
Triaged
Status in systemd package in Ubuntu:
Fix Committed
Bug description:
Temporary workaround:
Installing
[Service]
SystemCallFilter=lsm_get_self_attr lsm_set_self_attr lsm_list_modules
To /etc/systemd/user/pipewire-pulse.service.d/lsm-syscalls.conf and
then run systemctl --user daemon-reload && systemctl --user restart
pipewire-pulse
---------------------
System:
Ubuntu 26.04 (Resolute Raccoon - development branch)
Kernel: 6.19.0-6-generic
Laptop: Dell XPS 15 9510
Issue:
Audio is not working. The system tray shows:
“Not connected to PulseAudio server”.
pipewire.service and wireplumber.service are running normally.
However, pipewire-pulse.service crashes immediately with:
Active: failed (Result: core-dump)
signal=SYS
Systemd shows:
pipewire-pulse.service: Failed with result 'core-dump'
Start request repeated too quickly.
Because pipewire-pulse is not running, no audio devices are available.
This appears to be a regression in Ubuntu 26.04 development branch.
systemctl --user status pipewire → running
systemctl --user status wireplumber → running
systemctl --user status pipewire-pulse → core-dump (signal=SYS)
1) sunny@sunny-XPS-15-9510:~$ systemctl --user status pipewire
● pipewire.service - PipeWire Multimedia Service
Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; preset:
enabled)
Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
Invocation: ed405918e4764f7cab8e8423ab0858c8
TriggeredBy: ● pipewire.socket
Main PID: 4214 (pipewire)
Tasks: 3 (limit: 34631)
Memory: 7.6M (peak: 10.8M)
CPU: 289ms
CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/pipewire.service
└─4214 /usr/bin/pipewire
Feb 23 09:25:00 sunny-XPS-15-9510 systemd[4182]: Started pipewire.service -
PipeWire Multimedia Service.
sunny@sunny-XPS-15-9510:~$
2) sunny@sunny-XPS-15-9510:~$ systemctl --user status wireplumber
● wireplumber.service - Multimedia Service Session Manager
Loaded: loaded (/usr/lib/systemd/user/wireplumber.service; enabled;
preset: enabled)
Active: active (running) since Mon 2026-02-23 09:25:00 IST; 31min ago
Invocation: decaefb1bedf4e20a43ada3b30f1d9ce
Main PID: 4228 (wireplumber)
Tasks: 6 (limit: 34631)
Memory: 29.8M (peak: 31M)
CPU: 184ms
CGroup:
/user.slice/user-1000.slice/[email protected]/session.slice/wireplumber.service
└─4228 /usr/bin/wireplumber
Feb 23 09:25:00 sunny-XPS-15-9510 systemd[4182]: Started wireplumber.service
- Multimedia Service Session Manager.
Feb 23 09:25:01 sunny-XPS-15-9510 wireplumber[4228]: wp-device: SPA handle
'api.libcamera.enum.manager' could not be loaded; is it installed?
Feb 23 09:25:01 sunny-XPS-15-9510 wireplumber[4228]: s-monitors-libcamera:
PipeWire's libcamera SPA plugin is missing or broken. Some camera types may not
be supported.
sunny@sunny-XPS-15-9510:~$
3) sunny@sunny-XPS-15-9510:~$ systemctl --user status pipewire-pulse
× pipewire-pulse.service - PipeWire PulseAudio
Loaded: loaded (/usr/lib/systemd/user/pipewire-pulse.service; enabled;
preset: enabled)
Active: failed (Result: core-dump) since Mon 2026-02-23 09:31:56 IST;
26min ago
Duration: 1.126s
Invocation: 0345c4c831d44691a02963d7cbef80bc
TriggeredBy: × pipewire-pulse.socket
Process: 27725 ExecStart=/usr/bin/pipewire-pulse (code=dumped, signal=SYS)
Main PID: 27725 (code=dumped, signal=SYS)
Mem peak: 2.5M
CPU: 16ms
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Failed with result 'core-dump'.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Scheduled restart job, restart counter is at 7.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Start request repeated too quickly.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: pipewire-pulse.service:
Failed with result 'core-dump'.
Feb 23 09:31:56 sunny-XPS-15-9510 systemd[4182]: Failed to start
pipewire-pulse.service - PipeWire PulseAudio.
sunny@sunny-XPS-15-9510:~$
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: pipewire-pulse 1.5.84-1ubuntu2
ProcVersionSignature: Ubuntu 6.19.0-6.6-generic 6.19.2
Uname: Linux 6.19.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sunny 4228 F.... wireplumber
/dev/snd/seq: sunny 4214 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Mon Feb 23 10:01:29 2026
InstallationDate: Installed on 2021-12-06 (1540 days ago)
InstallationMedia: Xubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
MachineType: Dell Inc. XPS 15 9510
PactlListSinks:
Error: command ['pactl', 'list', 'sinks'] failed with exit code 1:
Connection failure: Connection refused
pa_context_connect() failed: Connection refused
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: pipewire
UpgradeStatus: Upgraded to resolute on 2026-01-12 (42 days ago)
dmi.bios.date: 12/02/2025
dmi.bios.release: 1.44
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.44.1
dmi.board.name: 01V4T3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.44.1:bd12/02/2025:br1.44:svnDellInc.:pnXPS159510:pvr:rvnDellInc.:rn01V4T3:rvrA00:cvnDellInc.:ct10:cvr:sku0A61:
dmi.product.family: XPS
dmi.product.name: XPS 15 9510
dmi.product.sku: 0A61
dmi.sys.vendor: Dell Inc.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2142428/+subscriptions
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2142428
Title:
pipewire-pulse crashes when snap clients connect because libapparmor
5.0's new lsm_get_self_attr syscall is blocked by the service's
seccomp filter
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2142428/+subscriptions
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