Questions tagged [d-bus]
A message bus system, a simple way for inter-process communication. It also helps coordinate process lifecycle.
269
questions
1
vote
0answers
16 views
How to perform action bound to a keyboard shortcut in Gnome from terminal?
How can I perform an action of any Gnome 3 keyboard shortcut in the terminal?
For example:
I can use dconf-editor to navigate through all keyboard shortcuts and get the dconf path. Let's say:
/org/...
0
votes
0answers
57 views
How to read() from Bluez AcquireNotify file descriptor?
I am attempting to write a Bluetooth client application for Linux which subscribes to a service from a paired Bluetooth device.
I am considering the use of file descriptors here in order to test ...
0
votes
0answers
25 views
systemd-run on nspawn for unprivileged users
I would like to run some programs in a systemd-nspawn container, and ideally not have to use sudo every time I want to start a program in the container.
Assuming it has been started like so:
# ...
1
vote
1answer
28 views
How to crash/disable/remove bluez interface in Linux?
I am building a bluetooth client for a project and I am looking for a way to crash the dbus bluetooth service offered by bluez, in Linux, prefferably in a controlled, recoverable manner.
Do you have ...
-1
votes
1answer
38 views
Why systemd says it's dependency system should be used only sparingly?
From systemd.unit(5) man page:
Note that while systemd offers a flexible dependency system between units it is recommended to use this functionality only sparingly and instead rely on techniques such ...
0
votes
1answer
77 views
DBUS-call failed:GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown
When I call xdg-open pic.png I get this message.
** (ristretto:7580): WARNING **: 13:44:21.730:
DBUS-call failed:GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown:
The name org.freedesktop....
0
votes
0answers
18 views
Why would someone use DBUS Proxy?
I am trying to implement an application using this GDBUS API from bluez.
I tried to study ways in which to make calls to the API and I managed to call a function and obtain results.
Here's an example
...
1
vote
0answers
69 views
How to prevent upowerd from being launched
Running DM-Less KDE-Plasma-5.19.5 Under a non-systemd Linux-5.4.80 and dbus-1.12.20
I try to get rid of the upowerd daemon.
I understand that upowerd is launched by dbus upon request from whatever ...
0
votes
0answers
27 views
Run services as user without X (systemctl)
I have a small server running a minimal centos8.
I need to create services as a user and would like to use systemctl to do so.
I found I can use systemctl --user to create services without root ...
0
votes
0answers
17 views
Get Network Configuration change via DBus signal in Linux
I have a c++ program which needs to detect a network configuration change. Unfortunately, my OS is a custom build Linux so I don't have a network manager in it. So is there any other systemd service ...
0
votes
0answers
7 views
What is the best way to control systemd start up modes directly from the same deamon?
I have an daemon (controlled by systemd) that needs to be configured with the following application level configuration details:
autostart: false|true|user-stopped
When the option is set to false, ...
0
votes
0answers
18 views
Find dbus .service file that provides a name / debug dbus lookup process
How can I list the .service files that dbus would parse when a certain service is requested, or all .service files that dbus has parsed at start-up?
I'm trying to override a system service file (in /...
0
votes
1answer
48 views
mask dbus-activated service (rtkit) via ~/.local/share?
I've been trying to mask a dbus-activated service (rtkit-daemon) via the "standard service dirs" location ~/.local/share/dbus-1/services/. The corresponding system file, which I want to ...
4
votes
1answer
205 views
hostnamectl command causes Failed to create bus connection: No such file or directory
I'm following this guide and I'm running into issues.
https://www.tecmint.com/initial-ubuntu-server-setup-guide/
I am trying to create a linux machine in Ubuntu in wsl2 and then rename it using ...
1
vote
1answer
130 views
a systemd service that starts a dbus service
I'd like to start a python script that uses pydbus to listen for incoming commands via D-Bus on boot, and it needs root permissions. It would be nice if it can be stopped and restarted via systemctl, ...
0
votes
0answers
32 views
how do I unpurge dbus-x11
I want to install dbus-x11 and then I get the following error:
E: Unable to locate package dbus-x11
I did apt-get purge dbus
0
votes
1answer
35 views
How to run qtdbus application as systemd?
Nice to meet you.
I made an application (car<-> controller) that communicates using qtdbus provided by Qt.
see.
https://doc.qt.io/qt-5/qtdbus-remotecontrolledcar-example.html
Fortunately, I was ...
0
votes
0answers
33 views
Error when installing apt package
When I try to install any package using apt-get it gives this error:
/usr/bin/chage: error while loading shared libraries: libaudit.so.1: cannot open shared object file: No such file or directory
...
0
votes
1answer
90 views
Ubuntu Notification Failed to execute program org.freedesktop.Notifications: No such file or directory (23)
i was working on a python script that displays notification, here's the library I'm using https://www.devdungeon.com/content/desktop-notifications-linux-python
from gi.repository import Notify
Notify....
0
votes
3answers
2k views
Failed to get D-Bus connection: Connection refused
A sudo user named my-host is getting the following error message when trying to reload systemctl on an Amazon Linux 2 EC2 image.
[my-host@ip-12-3-4-56 ~]$ systemctl --user daemon-reload
Failed to get ...
0
votes
1answer
77 views
Systemd DBus API returns service not loaded for disabled services
I want to start a systemd service from its D-Bus interface. However, it seems that services that are not already started or "enabled" (running on startup) are unknown to the Systemd D-Bus ...
1
vote
1answer
95 views
Unexpected errors possibly related to systemd or dbus - how to diagnose?
I am running Linux Mint 19 Tara with a Cinnamon desktop. Since yesterday, the system malfunctions, and I have been struggling to understand what is wrong or how to debug the situation. I would ...
0
votes
0answers
15 views
Measuring the number of Pulseaudio XRuns
Is it possible to measure how many XRuns has PulseAudio server generated during its uptime?
There's a method called GetXruns() in the object /org/jackaudio/Controller in the interface org.jackaudio....
0
votes
0answers
13 views
How to intercept hostname changes in order to update IP based on DHCP IP plan
We're using Rancher for the provisioning of Kubernetes clusters using a VMWare vCenter integration whereas Rancher interacts with the vCenter API in order to provision the Kubernetes nodes.
The ...
1
vote
0answers
58 views
How to control the D-Bus daemon virtual memory usage?
I am currently trying the D-Bus sample codes from the following link:
https://linoxide.com/how-tos/d-bus-ipc-mechanism-linux/
It worked.
Then I performed the exhaustion tests on the sample code above ...
0
votes
0answers
37 views
dbus configuration in order to listen to requests from within a container
I am trying to set up an app that is capable to interact with the Bluetooth dbus interface (bluez.org). My goal is having the app to be capable to pair/connect a device. I am using the java library ...
0
votes
1answer
456 views
auth-user-pass error in openvpn3
The problem I am encountering is that whenever I try to authenticate using the auth-user-pass option in openvpn3, I always get an error similar to this:
** ERROR ** org.gtk.GDBus.UnmappedGError.Quark....
0
votes
1answer
28 views
Modification of DBus /etc/dbus-1/system.conf broke the startup process
I have modified the file /etc/dbus-1/system.conf where I have changed the document to something like that:
<listen>tcp:host=localhost,bind=*,port=6667</listen>
<auth>ANONYMOUS</...
1
vote
0answers
50 views
Redhat 7.7 dbus-org flooding messages log
After installing Redhat 7.7 and by checking the /var/log/messages, I found the following messages are coming every minute:
Aug 24 19:33:00 dbus[1454]: [system] Activating via systemd: service name='...
46
votes
4answers
6k views
What is D-Bus practically useful for?
dbus is supposed to provide "a simple way for applications to talk to one another".
But I am still not sure what it is useful for, practically. I have never seen a situation where dbus is ...
4
votes
0answers
63 views
simplest way to enable user (non-root) to suspend laptop
My laptop has suspend capability:
# cat /sys/power/state
freeze mem
and indeed I can suspend as root:
echo -n mem > /sys/power/state
This works fine. But what would be a minimalist way to enable ...
0
votes
0answers
110 views
Kubuntu : Set color scheme to “Breeze Dark” from command line
I am trying to change Kubuntu 20.04 color scheme through the command line.
What I thought was the solution unfortunately didn't worked. What am I doing wrong ?
In ~/.kde/share/config/kdeglobals , set :...
0
votes
0answers
208 views
I keep getting this error: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded:
I keep getting error
Error: Could not create NMClient object: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: The maximum number of active connections for UID 1000 has been reached.
when ...
1
vote
0answers
39 views
systemd service stops logging to systemd-journal after executing dbus as non-root user
Sorry for the confusing title,
My current situation is following: I have a normal systemd service running (as root user&privileges). However, the service should alter my regular user's certain ...
0
votes
0answers
326 views
Notification and Notification daemon not working on window manager
I use Sway(wayland) and recently mako stopped working. Apparently there are problems with dbus, but I don't know where to dig further
What I tried:
Reinstalling mako/dbus didn't help
Created the ...
2
votes
1answer
928 views
How to prevent D-Bus from starting a (disabled) other daemon?
Recently I noticed that the rtkit-daemon process running on my Debian 10.4 machine may be interferring with a custom server application on that machine. So I wanted to disable that realtime kit daemon ...
2
votes
1answer
236 views
How do I restore files removed from /usr/bin?
TL;DR at the bottom.
Background:
The following occured on my CentOS 6.10 production server. I was using a browser based terminal program to run the program Midnight Commander which is a console-...
0
votes
0answers
33 views
problem with systemd service and gsettings command to swap mouse buttons of a user
I created a script to swap my mouse buttons via gsettings command which works as intended. after creating a systemd service that runs the script as the user the gsettings command doesn't work anymore. ...
0
votes
1answer
421 views
Access ALSA as systemd system service running as a regular user
I have a service which uses both the network and sound(ALSA), and I'm trying to make a systemd system service out of it. It works as a user service, but I can't make it work as a system service.
...
0
votes
2answers
155 views
NetworkManager does not save wifi passwords
I'm trying to use D-bus method AddAndActivate connection on interface org.freedesktop.NetworkManager to create a wifi connection. I definitely pass a PreSharedKey field with the password, but ...
0
votes
1answer
68 views
Firefox gives me dbus error
When I run Firefox under Wayland I get,
dbus[913]: arguments to dbus_message_new_method_call() were incorrect, assertion "_dbus_check_is_valid_path (path)" failed in file ../../../dbus/dbus-message.c ...
1
vote
1answer
91 views
How to set VLC volume with qdbus?
Seems like this should be pretty simple.
I can see the volume this way:
#> qdbus org.mpris.MediaPlayer2.vlc /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Volume
0.600006103515625
I can ...
2
votes
1answer
145 views
Getting available networks via NetworkManager D-Bus interface
I'm looking for how I can find the available networks (like from nmcli dev wifi list) using the D-Bus interface.
Looking at the API I don't see any Properties or Methods. I'm wondering if it is ...
1
vote
0answers
218 views
Can't send mail using Kmail
I'm using KDE on debian.
On Kmail application, while sending a mail I got the following error:
Failed to get D-Bus interface of mailfilteragent.
But, inbox is synchronized properly. Previously, I ...
1
vote
0answers
126 views
DBus NameOwnerChanged
When i run dbus-monitor --system, i got these 20 events per second:
signal time=1585510053.359267 sender=org.freedesktop.DBus -> destination=(null destination) serial=2019 path=/org/freedesktop/...
0
votes
1answer
49 views
GDBus/PolicyKit error in LXDE
I am using LXDE with Parabola (a libre derivative of Arch Linux). When I log in to the desktop environment, a window pops up with the following error:
GDBus.Error:org.freedesktop.PolicyKit1.Error....
1
vote
0answers
192 views
Freedesktop dbus error
In .xsession-errors file I noticed strange message:
dbus-update-activation-environment: setting LC_IDENTIFICATION=uk_UA.UTF-8
dbus-update-activation-environment: setting LC_TIME=en_US.UTF-8
dbus-...
2
votes
0answers
194 views
DBUS failed to open bus when using sessionbus
I'm trying to create/start a service that uses the session bus. It doesn't exactly have to be the session bus, I just want to get it working and don't know the difference between the two, just as a ...
0
votes
0answers
29 views
Meaning of uint32:0 in dbus-send and bash syntax
dbus-send --system --print-reply \
--dest=org.freedesktop.DBus \
/org/freedesktop/DBus \
org.freedesktop.DBus.StartServiceByName \
string:org....
0
votes
1answer
361 views
Cannot trap some Python DBus except errors
I'm getting this error in Python which is non-fatal and I'm presuming is written to stderr:
ERROR:dbus.proxies:Introspect error on :1.4:/org/freedesktop/thermald:
dbus.exceptions.DBusException:
...
