jackd2 no longer works after a stint with pipewire

[daveriedstra]

(I'm sure package interaction can be a grey area for maintainers, I'd be happy to move this over at the pipewire-debian repo if that's better, but I think there's a better chance someone here recognizes what's happening)

Describe the bug

I'd had a working pulseaudio + jack system on this machine for years. I installed pipewire-debian, used pipewire as my audio driver for a few weeks, then tried to revert to what I had before. After purging the pipewire-debian PPA, jackd no longer works, even though pulseaudio works fine. I suspect something in the pipewire-debian install broke jackd somehow, but I can't trace it down.

Environment

• JACK Version: jackdmp version 1.9.19 tmpdir /dev/shm protocol 9
• Operating System: Pop!_OS 21.04, kernel 5.12.0-19.3-liquorix-amd64
• Installation: kxstudios-ubuntus repos

Steps To Reproduce

• start from working configuration
• install pipewire-debian per its repo's instructions
• disable & mask pipewire systemd services to switch back:
  • systemctl --user --now disable pipewire{,-pulse}.{socket,service} pipewire-media-session.service
  • systemctl --user mask pipewire{,-pulse}.{socket,service} pipewire-media-session.service
• try to start jackd2 (unsuccessful)
• uninstall pipewire-debian per its repo's recommendations (sudo ppa-purge ppa:pipewire-debian/pipewire-upstream)
• try to start jackd2 (unsuccessful)

Expected vs. actual behavior

Expected: jackd works as before

Actual: the errors listed below.

Starting jackd with jackd -d alsa -d hw:PCH -r 44100 -p 256 -n2 gives this output:

jackdmp 1.9.19
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2016 Grame.
Copyright 2016-2021 Filipe Coelho.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
[W][000003845.986811][control.c:89 jackctl_server_create2()] not implemented 0x55aa4033ff40 0x55aa403400b0 0x55aa40340150
[W][000003845.986855][control.c:175 jackctl_server_get_parameters()] 0x55aa41a72630: not implemented
[W][000003845.986869][control.c:163 jackctl_server_get_drivers_list()] 0x55aa41a72630: not implemented
[W][000003845.986878][control.c:246 jackctl_driver_get_name()] 0x55aa41a726c0: not implemented
Unknown driver "alsa"
[W][000003845.986892][control.c:115 jackctl_server_destroy()] 0x55aa41a72630: not implemented

Starting via qjackctl produces this message output:

00:08:27.365 Statistics reset.
00:08:27.385 ALSA connection change.
00:08:27.389 D-BUS: Service is available (org.jackaudio.service aka jackdbus).
00:08:27.426 ALSA connection graph change.
00:08:29.199 D-BUS: ResetParameterValue('engine:name'): Invalid container address 'engine':'name':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.200 D-BUS: SetParameterValue('engine:verbose', 'true'): Invalid container address 'engine':'verbose':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.202 D-BUS: SetParameterValue('engine:realtime', 'true'): Invalid container address 'engine':'realtime':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.203 D-BUS: ResetParameterValue('engine:realtime-priority'): Invalid container address 'engine':'realtime-priority':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.204 D-BUS: SetParameterValue('engine:client-timeout', '500'): Invalid container address 'engine':'client-timeout':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.206 D-BUS: SetParameterValue('driver:device', 'hw:PCH'): Invalid container address 'driver':'device':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.207 D-BUS: SetParameterValue('driver:rate', '48000'): Invalid container address 'driver':'rate':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.208 D-BUS: SetParameterValue('driver:period', '256'): Invalid container address 'driver':'period':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.209 D-BUS: SetParameterValue('driver:nperiods', '3'): Invalid container address 'driver':'nperiods':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.210 D-BUS: SetParameterValue('driver:softmode', 'true'): Invalid container address 'driver':'softmode':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.211 D-BUS: SetParameterValue('driver:monitor', 'false'): Invalid container address 'driver':'monitor':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.212 D-BUS: SetParameterValue('driver:shorts', 'false'): Invalid container address 'driver':'shorts':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.213 D-BUS: SetParameterValue('driver:hwmon', 'false'): Invalid container address 'driver':'hwmon':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.214 D-BUS: SetParameterValue('driver:hwmeter', 'false'): Invalid container address 'driver':'hwmeter':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.215 D-BUS: ResetParameterValue('driver:midi-driver'): Invalid container address 'driver':'midi-driver':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.216 D-BUS: SetParameterValue('driver:duplex', 'true'): Invalid container address 'driver':'duplex':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.217 D-BUS: SetParameterValue('driver:capture', 'hw:PCH'): Invalid container address 'driver':'capture':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.218 D-BUS: SetParameterValue('driver:playback', 'hw:PCH'): Invalid container address 'driver':'playback':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.219 D-BUS: ResetParameterValue('driver:inchannels'): Invalid container address 'driver':'inchannels':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.220 D-BUS: ResetParameterValue('driver:outchannels'): Invalid container address 'driver':'outchannels':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.222 D-BUS: SetParameterValue('driver:dither', 'n'): Invalid container address 'driver':'dither':'(null)' supplied to method 'SetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.223 D-BUS: ResetParameterValue('driver:input-latency'): Invalid container address 'driver':'input-latency':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.224 D-BUS: ResetParameterValue('driver:output-latency'): Invalid container address 'driver':'output-latency':'(null)' supplied to method 'ResetParameterValue'.. (org.jackaudio.Error.InvalidArgs)
00:08:29.229 D-BUS: JACK server could not be started. Sorry
00:08:29.240 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'engine':'name':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'engine':'verbose':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'engine':'realtime':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'engine':'realtime-priority':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'engine':'client-timeout':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'device':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'rate':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'period':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'nperiods':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'softmode':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'monitor':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'shorts':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'hwmon':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'hwmeter':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'midi-driver':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'duplex':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'capture':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'playback':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'inchannels':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'outchannels':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'dither':'(null)' supplied to method 'SetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'input-latency':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: Invalid container address 'driver':'output-latency':'(null)' supplied to method 'ResetParameterValue'.
Fri Jul 30 00:08:29 2021: ERROR: failed to create dbusapi jack client

jackdbus is running:

❯ ps -aux | grep jackd
dried      36346  0.0  0.0 340292  7188 ?        S<l  Jul29   0:00 /usr/bin/jackdbus auto

I never really used it before, but trying to start with jack_control start gives this:

--- start
DBus exception: org.jackaudio.Error.Generic: failed to create dbusapi jack client

edit

Purging the kxstudios-ubuntus repo and downgrading to jackd v1.9.17 from the Ubuntu repos doesn't change anything.

Running jackd --help displays the following:

jackdmp 1.9.17
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2016 Grame.
Copyright 2016-2021 Filipe Coelho.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
[W][000010877.096559][control.c:89 jackctl_server_create2()] not implemented 0x55beffc8bed0 0x55beffc8c040 0x55beffc8c110
[W][000010877.096610][control.c:175 jackctl_server_get_parameters()] 0x55bf0068f630: not implemented

Usage: jackdmp [ --no-realtime OR -r ]
               [ --realtime OR -R [ --realtime-priority OR -P priority ] ]
      (the two previous arguments are mutually exclusive. The default is --realtime)
               [ --name OR -n server-name ]
               [ --timeout OR -t client-timeout-in-msecs ]
               [ --loopback OR -L loopback-port-number ]
               [ --port-max OR -p maximum-number-of-ports]
               [ --slave-backend OR -X slave-backend-name ]
               [ --internal-client OR -I internal-client-name ]
               [ --internal-session-file OR -C internal-session-file ]
               [ --verbose OR -v ]
               [ --clocksource OR -c [ h(pet) | s(ystem) ]
               [ --autoconnect OR -a <modechar>]
[W][000010877.096628][control.c:175 jackctl_server_get_parameters()] 0x55bf0068f630: not implemented
                 where <modechar> is one of:
[W][000010877.096637][control.c:396 jackctl_parameter_get_enum_constraints_count()] (nil): not implemented
               [ --replace-registry ]
               [ --silent OR -s ]
               [ --sync OR -S ]
               [ --temporary OR -T ]
               [ --version OR -V ]
         -d master-backend-name [ ... master-backend args ... ]
       jackdmp -d master-backend-name --help
             to display options for each master backend

[W][000010877.096650][control.c:163 jackctl_server_get_drivers_list()] 0x55bf0068f630: not implemented
Available backends:
[W][000010877.096659][control.c:254 jackctl_driver_get_type()] 0x55bf0068f6c0: not implemented
[W][000010877.096667][control.c:246 jackctl_driver_get_name()] 0x55bf0068f6c0: not implemented
      dummy (slave)

[W][000010877.096680][control.c:186 jackctl_server_get_internals_list()] 0x55bf0068f630: not implemented
Available internals:

[W][000010877.096692][control.c:115 jackctl_server_destroy()] 0x55bf0068f630: not implemented

[daveriedstra]

Turns out some pipewire client libraries were left over from the pipewire-debian install; removing them with apt remove pipewire-audio-client-libraries fixed the issue