Archlinux - jack2, dbus, cadence and pulseaudio issues...

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karm
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Archlinux - jack2, dbus, cadence and pulseaudio issues...

Post by karm »

Hi,

I'm stuck on this one. I've installed arch tonight and it is great, unity works smoothly, lightdm is great, and systemd looks very nice. However, I can't get jack to work. This is a bit complicated. I tried several versions of jack: jack2 (official repo), jack2-dbus (official), jack2-kxstudio-dbus (aur), jack2-git (aur). The problem is, I can't get it to work with dbus, pulseaudio and cadence at the same time.

Jack2-git works ok with pulseaudio and starts at the boot perfectly but cadence segfaults and when I try cadence-session-start -s it tells me that org.jackserver.dbus (or something like that) is null, anyway it tells me that there is no dbus object for jack. I think dbus is broken in this build because I can start jack only with jackd and not with jack_control.

Jack2-kxstudio-dbus cannot start at the boot.

Code: Select all

jack_control[369]: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
I foun topic about this error at arch forums (https://bbs.archlinux.org/viewtopic.php?id=153527) but the conclusion was to use jack2-git. With jack2-kxstudio-dbus I can start the server with jack_control provided that pulseaudio is set to autospawn=no. but it is not always working...

I'm confused. Can anybody help me? I'm new to systemd and dbus is quite mystery to me also. But I would like to setup it and learn how this stuff works. Thanks in advance.
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Capoeira »

Archuser here too, but this should habe been postet in KXStudios Subforum, as I guess only Falk can help with that one
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Capoeira »

falkTX wrote:
Then, make sure you have enabled DBUs to start at boot (before the login manager, lightdm). A default Arch install doesn't do this by default afaik, and DBus is required to make Cadence work.
now, with systemd, d-bus is installed and lunched automaticly
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Joermungand »

I’m on Arch here, using jack2-kxstudio-dbus + Cadence with a firewire audio interface. According to the Archlinux wiki (https://wiki.archlinux.org/index.php/D-Bus) dbus should be running because systemd needs it and it is systemd that starts other services, including X11 or lightdm. I’ve tried jack2-kxstudio and it works equally well. I’m not using Unity, though, but XFCE with lxdm.

Archlinux moved to systemd relatively recently. Is systemd running on your system?
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Joermungand »

Sorry, Capoeira, I was editing my post and hadn’t noticed you’d beat me to it.
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Joermungand »

Any progress, karm?
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

Sorry, I was afk since writing OP.

Yes, I have systemd up and running. AFAIU to be able to autostart Jack I need to specify a .service file. Am I right?

I wrote one like this:

Code: Select all

[Unit]
Description=JACK
After=sound.target

[Service]
User=mks
ExecStart=/usr/bin/jack_control ds alsa

[Install]
WantedBy=multi-user.target
And it fails to start with the same message as in topic linked in OP:
jack.service - JACK
Loaded: loaded (/etc/systemd/system/jack.service; enabled)
Active: failed (Result: exit-code) since nie 2013-01-20 17:28:24 CET; 1min 1s ago
Process: 1311 ExecStart=/usr/bin/jack_control ds alsa (code=exited, status=1/FAILURE)

sty 20 17:28:24 shi-emperor jack_control[1311]: bus = dbus.SessionBus()
sty 20 17:28:24 shi-emperor jack_control[1311]: File "/usr/lib/python2.7/site-packages/dbus/_dbus.py", line 211, in __new__
sty 20 17:28:24 shi-emperor jack_control[1311]: mainloop=mainloop)
sty 20 17:28:24 shi-emperor jack_control[1311]: File "/usr/lib/python2.7/site-packages/dbus/_dbus.py", line 100, in __new__
sty 20 17:28:24 shi-emperor jack_control[1311]: bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
sty 20 17:28:24 shi-emperor jack_control[1311]: File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 122, in __new__
sty 20 17:28:24 shi-emperor jack_control[1311]: bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
sty 20 17:28:24 shi-emperor jack_control[1311]: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
sty 20 17:28:24 shi-emperor systemd[1]: jack.service: main process exited, code=exited, status=1/FAILURE
sty 20 17:28:24 shi-emperor systemd[1]: Unit jack.service entered failed state
~
AFAIU it is because service is started with root privileges while root is not logged in and no X11 display is available for him. I'm not sure how to proceed from this point.

Even that jack and pulseaudio are stopped I can't run cadence:
cadence
Segmentation fault (core dumped)
cadence-session-start -s
Traceback (most recent call last):
File "/usr/share/cadence/src/cadence_session_start.py", line 220, in <module>
sys.exit(startSession(False))
File "/usr/share/cadence/src/cadence_session_start.py", line 100, in startSession
startJack()
File "/usr/share/cadence/src/cadence_session_start.py", line 131, in startJack
DBus.jack.StartServer()
File "/usr/lib/python3.3/site-packages/dbus/proxies.py", line 145, in __call__
**keywords)
File "/usr/lib/python3.3/site-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.jackaudio.Error.Generic: Failed to open server
Note that this is a fresh arch install and there might be some uninstalled packages that are needed. Some details about packages I have installed:
pacman -Q | grep dbus
dbus 1.6.8-6
dbus-c++ 0.9.0-4
dbus-glib 0.100-1
jack2-kxstudio-dbus 1.9.9.5-1
libdbusmenu 12.10.2.0ubuntu1-101
libdbusmenu-gtk2 12.10.2.0ubuntu1-101
libdbusmenu-gtk3 12.10.2.0ubuntu1-101
libdbusmenu-qt 0.9.2-1
python-dbus 1.1.1-2
python-dbus-common 1.1.1-2
python2-dbus 1.1.1-2
cadence-git 20130119-1
Joermungand, could you tell me how your system is configured? Do you use a custom .service file for jack?
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

FalkTX, no need to get angry. I understood when you wrote it for the first time. The reason I try running it as a service is that cadence segfaults thus it can't manage anything here... do you have any idea why it is behaving like this?
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

jack_control status
--- status
stopped
It's ok I guess. I can start cadence-jacksettings without issues.

However:
jack_control start
--- start
DBus exception: org.jackaudio.Error.Generic: Failed to open server
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

looks like the audio device is busy?
Sun Jan 20 18:25:35 2013: ERROR: cannot register object path "/org/freedesktop/ReserveDevice1/Audio0": A handler is already registered for /org/freedesktop/ReserveDevice1/Audio0
Sun Jan 20 18:25:35 2013: ERROR: Failed to acquire device name : Audio0 error : A handler is already registered for /org/freedesktop/ReserveDevice1/Audio0
Sun Jan 20 18:25:35 2013: ERROR: Audio device hw:EMU0404,0 cannot be acquired...
Sun Jan 20 18:25:35 2013: ERROR: Cannot initialize driver
Sun Jan 20 18:25:35 2013: ERROR: JackServer::Open failed with -1
Sun Jan 20 18:25:35 2013: ERROR: Failed to open server
Jack started with a NULL device. I tried:
pulseaudio --kill
E: [pulseaudio] main.c: Failed to kill daemon: No such process
I have no idea what could take the device over in such a situation...
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

Yes, Jack has started. I wrote "NULL" instead of "DUMMY", my bad.
lsof | grep asound
jackdbus 616 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Firefox also tried to use asound but after I closed it I got the same errors in cadence-logs.
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

With driver set to DUMMY I get:
$ cadence-session-start -s
Initiated PulseAudio successfully!
JACK Started Successfully
but with ALSA:
$ cadence-session-start -s
Traceback (most recent call last):
File "/usr/share/cadence/src/cadence_session_start.py", line 220, in <module>
sys.exit(startSession(False))
File "/usr/share/cadence/src/cadence_session_start.py", line 100, in startSession
startJack()
File "/usr/share/cadence/src/cadence_session_start.py", line 131, in startJack
DBus.jack.StartServer()
File "/usr/lib/python3.3/site-packages/dbus/proxies.py", line 145, in __call__
**keywords)
File "/usr/lib/python3.3/site-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.jackaudio.Error.Generic: Failed to open server
the output of lsof with firefox running is:
$ lsof | grep asound
jackdbus 1951 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
a2jmidid 1953 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
firefox 1960 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Gecko_IOT 1960 1964 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
XPCOM 1960 1965 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Socket 1960 1966 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Hang 1960 1967 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
gdbus 1960 1969 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
JS 1960 1970 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1971 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1972 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1973 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1974 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1975 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1976 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Analysis 1960 1977 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
JS 1960 1978 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
JS 1960 1979 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Timer 1960 1981 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1982 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Cache 1960 1983 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Cert 1960 1984 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
HTML5 1960 1985 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1991 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1992 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1993 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
DNS 1960 1994 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
URL 1960 1995 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1996 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 1997 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
dconf 1960 1998 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
Proxy 1960 1999 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 2004 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
mozStorag 1960 2005 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
StreamTra 1960 2006 mks mem REG 8,4 987128 4871379 /usr/lib/libasound.so.2.0.0
but I closed firefox before running cadence-sessions-start -s.
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

I rebooted and nothing changed.

Cadence segfaults. Even if driver is set to DUMMY.

One thing worth noting: even that I disabled and removed jack service, pulseaudio is still started at boot. It fails because jack is dead and I set it up to use pulse to jack bridge. But it may be interfering somehow, I guess...

here is bootlog part about pulseaudio:
sty 20 19:16:17 shi-emperor rtkit-daemon[628]: Successfully made thread 627 of process 627 (/usr/bin/pulseaudio) owned by '1000' high priority at nice level -11.
sty 20 19:16:17 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:17 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:18 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:18 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:19 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:19 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:20 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:20 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:21 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:21 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:22 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:22 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:23 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: JACK error >jack server is not running or cannot be started<
sty 20 19:16:23 shi-emperor pulseaudio[627]: [pulseaudio] module-jack-sink.c: jack_client_open() failed.
sty 20 19:16:23 shi-emperor pulseaudio[627]: [pulseaudio] module.c: Failed to load module "module-jack-sink" (argument: ""): initialization failed.
sty 20 19:16:23 shi-emperor pulseaudio[627]: [pulseaudio] main.c: Module load failed.
sty 20 19:16:23 shi-emperor pulseaudio[627]: [pulseaudio] main.c: Failed to initialize daemon.
sty 20 19:16:23 shi-emperor rtkit-daemon[628]: Successfully made thread 675 of process 675 (/usr/bin/pulseaudio) owned by '1000' high priority at nice level -11.
sty 20 19:16:23 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:23 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:24 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:24 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:25 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:25 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:26 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:26 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:27 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:27 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:28 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:28 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:29 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: JACK error >jack server is not running or cannot be started<
sty 20 19:16:29 shi-emperor pulseaudio[675]: [pulseaudio] module-jack-sink.c: jack_client_open() failed.
sty 20 19:16:29 shi-emperor pulseaudio[675]: [pulseaudio] module.c: Failed to load module "module-jack-sink" (argument: ""): initialization failed.
sty 20 19:16:29 shi-emperor pulseaudio[675]: [pulseaudio] main.c: Module load failed.
sty 20 19:16:29 shi-emperor pulseaudio[675]: [pulseaudio] main.c: Failed to initialize daemon.
sty 20 19:16:54 shi-emperor rtkit-daemon[628]: Successfully made thread 955 of process 955 (/usr/bin/pulseaudio) owned by '1000' high priority at nice level -11.
sty 20 19:16:54 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:54 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:55 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:55 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:56 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:56 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:57 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:57 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:58 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:58 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:16:59 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
sty 20 19:16:59 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server request channel<
sty 20 19:17:00 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: JACK error >jack server is not running or cannot be started<
sty 20 19:17:00 shi-emperor pulseaudio[955]: [pulseaudio] module-jack-sink.c: jack_client_open() failed.
sty 20 19:17:00 shi-emperor pulseaudio[955]: [pulseaudio] module.c: Failed to load module "module-jack-sink" (argument: ""): initialization failed.
sty 20 19:17:00 shi-emperor pulseaudio[955]: [pulseaudio] main.c: Module load failed.
sty 20 19:17:00 shi-emperor pulseaudio[955]: [pulseaudio] main.c: Failed to initialize daemon.
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by Joermungand »

Hi, sorry, I wasn’t around. I have the same dbus-related packages installed, except the ubuntu ones, and the same version of Cadence. I don’t have pulseaudio installed at all, just plain alsa. I use the alsa loop bridge in Cadence. In order to get snd-aloop to be loaded automatically at boot, you need:

Code: Select all

$ cat /etc/modules-load.d/snd-aloop.conf 
# Load snd-aloop module
snd-aloop
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Re: Archlinux - jack2, dbus, cadence and pulseaudio issues..

Post by karm »

pulseaudio is not running:
$ systemctl status pulseaudio
pulseaudio.service
Loaded: error (Reason: No such file or directory)
Active: inactive (dead)
and there were no processes to kill. Anyway, why cadence segfaults?
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