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Questions tagged [dbus]

D-BUS is a messaging system used by applications to talk to each other.

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8 views

Why is my qdbus not outputing certain properties?

Having trouble with qdbus, could anyone tell me why this output is blank? It should have a value as shown in the d-feet window below the highlighted line As shown in the potato picture, the output of ...
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1answer
26 views

What are possible causes of appmenu-gtk failing to connect to D-Bus?

The warning is ** (/usr/lib/firefox/firefox:1671): WARNING **: 22:14:54.614: Unable to connect to dbus: Could not connect: Permission denied I tried using strace but can't find any related file ...
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1answer
34 views

Some journalctl ERRORS

I've been having some error shown on journalctl -b -p err command output, could you guys shed some light on how I could solve them and explain the reason behind them? journalctl -b -p err output I'd ...
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25 views

'sudo telinit 5' and “Could not sync environment to dbus”

I'm currently running Kubuntu on my laptop (no Windows partition) and trying to learn how to use linux. At the attempt to kill the GUI, 'sudo telinit 3' managed to switch it off. However, when I ...
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19 views

Dbus error message when installing or opening some programs

I am struggling with an error. Every time I want to install a package or upgrade, O get this error message: Error: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with ...
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49 views

Ubuntu 18.04 LTS hang before login

problem: screen keep flashing with the ubuntu mark and progressing curser (which loops). Occasionally it will start normal and successful. a little background: Upgraded from ubuntu 16.04 two months ...
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1answer
16 views

KDevelop crashed (closed unexpectedly)

I am try to run application "KDevelop" but return with the following error: root@11:~$ kdevelop Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)...
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26 views

Xubuntu Printer Manager doesn't work

I work with Xubuntu and used to print documents with a printer which is on a local network. It won't print anymore and I can't open the Printer Manager (System/Printers) either. I think it happened ...
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112 views

Dbus-daemon crash after boot

Not always, but often, I find this bug on startup, but with nothing that crashes. For now I'm ignoring it, because I repeat, it does not scratch anything on the screen, but is there a solution? ...
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39 views

There always is a dbus error at startup

Does anyone know what it is? I hope that I can get rid off it.
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0answers
49 views

Startup command with variable settings

I have Xubuntu 16.04 for 2 days. I am trying to set an entry in Session and Startup>Application Autostart that will set several bash variables and execute a command. I have managed how to do it ...
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1answer
19 views

How to pass different argument to gdbus like unit16, uint32

By default arguments sent to gdbus are taken to be of type Int32. I need to send arguments of mixed type like uint16, uint32 .. How to frame the arguments for gdbus for same Unfortunately there are ...
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31 views

Listen for dbus signal “screen awake” gnome ubuntu 18.04

Playing around with dbus for the first time (apologies in advance for noobness). I want to do something similar to this question except that instead of monitoring the system waking up, I want to ...
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1answer
24 views

Menubars missing in libreoffice when used in unshare session in 18.04

When using libreoffice inside unshare -m session, the menubar is missing. In the console output I see these warnings: ** (soffice:9193): CRITICAL **: 10:29:29.171: void g_lo_menu_insert_section(...
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0answers
195 views

Ubuntu 18.04 systems dying a week after install with dbus errors

I've been banging my head against google for a day now and I'm no closer to a solution so I'm hoping someone out there can help out. I'm installing 18.04 via fai and then doing some system config ...
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1answer
175 views

How do I disable Dunst and go back to notify-osd?

I installed i3, which recommends dunst, but I'm not using i3 at the moment, and the dunst notifications don't really fit with Unity. I'd rather not uninstall dunst totally, since I might want to start ...
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1answer
159 views

Updated 16.04 server to 18.04.1, now I see weird errors about missing files, failing to resolve dns, failing to connect to bus

Ok, so this is an upgrade from 16.04.1 LTS to 18.04.1 LTS, the server is headless. After the upgrade is finished, and a reboot is completed, the following happens: Trying to upgrade packages only ...
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1answer
105 views

how to use gdbus to set an IP address

I'm researching how to change IP addresses (and DHCP settings) from a workstation app I'm writing which is why I need/want to use dbus for this purpose. It's complicated! So I'm trying to learn by ...
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217 views

18.04 upgrade dbus fail starting X server

I upgraded my desktop from 16.04.5 to 18.04.1 and find after booting that the start up freezes. In recovery, looking at the journalctl output I see stan-desktop dbus-daemon[3424]: [session uid=0 pid=...
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43 views

dbus spam relating to intel_backlight.device

Sometimes the following happens. Fans start constantly running and polkitd is 25% CPU. dbus-monitor --system shows the following sort of thing repeating very rapidly: signal time=1537057403.524844 ...
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1answer
194 views

Several applications not lauching after upgrade (Ubuntu-Gnome 16.04 to Ubuntu 18.04)

After upgrade to 18.04, several applications don't open anymore. Synapctic, SweetHome3d, the game 0ad, etc. Trying to launch it via terminal, 0ad, I got this: dbus[2283]: arguments to ...
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152 views

bluetoothd fails to start Ubuntu 16.04 LTS

The bluetooth daemon is not running. Previous answers to similar questions have blamed some sort malfunction related to apparmor but I have completely uninstalled apparmor and the problem is still ...
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148 views

gnome-tweak-tool fails for lack of shell or dbus service

Executing "gnome-tweak-tool" under a fresh install of 16.04.3, with all updates added, fails with the following error messages: WARNING : Error detecting shell Exception: Shell not running or DBus ...
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0answers
250 views

What is this daemon process using so much CPU?

As per the screengrab, this is puzzling, to me at least. I haven't noticed this running before, just the past few days. This is a workstation Ubuntu 18.04 current updates as of this morning. ...
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20 views

Lost Unity launcher and Could not find dbus session ID in user Environment

I have lost my unity launcher and top panel while installing something. While recovering this issue I came across Unity Launcher and Top Panel disappeared in 14.04 and How to change Gsettings via ...
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26 views

Any idea in ubuntu 16.04 htop, command “./dbudaemon” shows constant 500% cpu utilization?

I have an aws instance with ubuntu 16.04 with multi core. Till last two days every thing was looking fine, now my aws constantly sends high cpu utilization alert. Even when I stopped and restarted the ...
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1answer
306 views

Installing wine and steam (linux version) simultaneously on the same machine with Ubuntu 18.04?

I am trying to setup new linux machine, primary for work and then light gaming when off-duty. Due to work part, I require wine to run some windows-specific software. However installing both steam and ...
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0answers
44 views

How to recover “basic” indicators in Plasma SystemTray?

I recently installed Kubuntu 18.04 (was using Xubuntu 16.04 earlier). The overall impression is good but I was not satisfied with the functionality of some plasmoid widget that shows a menu of ...
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0answers
121 views

not able to connect to session dbus from service in ubuntu

I have to run my application as service in ubuntu 16.04. I am using systemd to make it run as service during bootup time. My application has to connect to both session dbus and system dbus. ...
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157 views

Failed to send D-Bus message : Too many open files

I'm using Xubuntu 16.04.4 LTS and, whenever I use XFCE, I get random errors when I press on the Meta key to open the Whisker menu. Spefically, the error is in the screenshot below. Every time this ...
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1answer
698 views

Lubuntu 18.04 keyring (dbus) not working

After updating from 16.04 to 18.04, GNOME3 is to slow on my hardware (2010 dual core, 4GB, 128GB SSD) So I decided to switch to Lubuntu, way faster. All fine, except: there seems to be no password ...
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1answer
438 views

How to control Kodi with the command line or media controls?

I am trying to make controlling kodi easier with keyboard shortcuts or from the terminal. Something like how I can control spotify with DBUS or with keyboard shortcuts. I came across this link but I ...
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212 views

How to resolve dbus-launch error?

when I would like start dbus-launch by this command: dbus-launch --sh-syntax Output show me this error message dbus[13776]: Unable to set up transient service directory: XDG_RUNTIME_DIR "/run/user/...
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1answer
342 views

no /run/dbus/system_bus_socket

I wanted to upgrade from 17.10 to 18.04 but the upgrade failed, I think the reason was that policykit-1 was left unconfigured. Rebooting did not help and now I am in the emergency console. I found ...
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1answer
237 views

Turn off “Dropbox almost full” notification

Dropbox for Linux has the annoying habit to send a desktop notification every few hours telling me that my space is almost full. Is there a way (under Gnome-based Ubuntu 17.10 and newer) to filter out ...
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38 views

Ubuntu User Switch Dbus notification

When a user switches from one user to another without logging out(fast user switch), is there a way to get the notification and to which user the account has logged in currently. This notification ...
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1answer
447 views

`root` owns some files in `/home/user` should I be concerned?

$ sudo find /home/rick -user root /home/rick/.dbus /home/rick/.dbus/session-bus /home/rick/.dbus/session-bus/d7b25a27fe064cadb75a2f2f6ca7764e-0 /home/rick/.cache/dconf /home/rick/.aptitude/config /...
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114 views

Error message whenever I open a program with a GUI via console

As the title implies everytime I open a program with a GUI over the console I get this error message Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name ...
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692 views

Failed to connect to the D-Bus session

I get the following error when i run vlc on ubuntu 14.04 : What does this actually mean and what can I do to prevent it from happening? VLC media player 2.1.6 Rincewind (revision 2.1.6-0-...
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1answer
580 views

Qpaeq not working on 17.10

I am running Lubuntu 17.10. Loading qpaeg with: pactl unload-module module-equalizer-sink pactl unload-module module-dbus-protocol pactl load-module module-equalizer-sink pactl load-module module-...
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242 views

Feral gamemode - failed to connect to bus

I am trying to install Feral's gamemode: https://github.com/FeralInteractive/gamemode I get the following error message however: jamie@jamie-ncase:~$ cd gamemode-1.0 jamie@jamie-ncase:~/gamemode-1.0$...
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103 views

Cups Delay, DBus and Colord

I've had a problem with CUPs; printing has been delayed 20-30 seconds. I tracked it down to a dbus problem, which was caused by colord not starting properly when cups is started. If I start colord ...
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1answer
770 views

CRITICAL: Unable to create a DBus proxy for GnomeScreensaver

I received this critical error in my logs, but I haven't had any problems so far. If anyone knows why I get this error and what it means, I'd really appreciate an answer from you. CRITICAL: ...
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1answer
81 views

How to detect if computer is asleep

I am trying to find a way to query the state of my laptop from the terminal. I would like to know if it is asleep or awake. Is there a dbus query suitable for this?
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18 views

Unable to query gdbus as root

I am unable to run the following command as root. echo $(gdbus call -e -d com.canonical.Unity -o /com/canonical/Unity/Session -m com.canonical.Unity.Session.IsLocked | grep -ioP "(true)|(false)") I ...
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42 views

CloudCompare launching Error

/CloudCompare/build$ /usr/local/bin/CloudCompare When I launch CLOUDCOMPARE, I receive this error! Please help me to resolve it. void DBusMenuExporterPrivate::addAction(QAction*, int): Already ...
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141 views

Control KDE application GUIs using d-bus

Is there a way to control application windows on Kubuntu/KDE using DBus? I think of raising, maximizing, minimizing, etc. windows of applications started in KDE. I guess there could be some generic ...
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0answers
442 views

Bluetooth stopped working: “D-Bus setup failed”

When I run blueman-manager I get this error Bluez daemon is not running, blueman-manager cannot continue. This probably means that there were no Bluetooth adapters detected or Bluetooth daemon was ...
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2answers
430 views

Accidentally removed system dbus fixing

So I accidentally did something very dumb today, running sudo apt-get remove dbus instead of running sudo apt-get remove python-dbus. This led to my dpkg being broken and me getting a 'failed to start ...
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1answer
774 views

How do I backup all files? (.dbus and dconf backup problems)

What are /home/user/.cache/dconf and /home/user/.dbus? Why does their backup fail? I tried following this 2013 answer (see code below) but while it allowed me to backup the above files, now I am told ...