Desktop notifications
Desktop notifications are small, passive popup dialogs that notify the user of particular events in an asynchronous manner.
Libnotify
Libnotify is an implementation of the Desktop Notifications Specification which provides support for GTK and Qt applications and is desktop independent: it is already used by many open source applications like Evolution and Pidgin. Libnotify can be installed with the libnotify package.
In order to use libnotify, you have to install a notification server.
Notification servers
Built-in
Cinnamon, Deepin, Enlightenment, GNOME, GNOME Flashback and KDE Plasma use their own implementations to display notifications, and it cannot be replaced. Their notification servers are started automatically on login to receive notifications from applications via DBus.
Standalone
In other desktop environments, the notification server needs to be launched using an autostarting option.
Alternatively, by making the notification server as a D-Bus service, the notification server can be launched automatically on the first call to it. Most notification servers already ship a dbus service under /usr/share/dbus-1/services
. For some implementations, e.g. notification-daemon package, it's necessary to create one manually in the user D-Bus services directory ($XDG_DATA_HOME/dbus-1/services
):
org.freedesktop.Notifications.service
[D-BUS Service] Name=org.freedesktop.Notifications Exec=/usr/lib/notification-daemon-1.0/notification-daemon
Whenever an application sends a notification by sending a signal to org.freedesktop.Notifications
, D-Bus activates /usr/lib/notification-daemon-1.0/notification-daemon
if it has not already been activated.
You can also choose one of the following implementations:
- Deadd Notification Center — A notification-daemon with notification center inspired by Dunst.
- Dunst — Minimalist notification daemon for Linux designed to fit nicely into minimalist window managers like dwm. Includes Wayland support since 1.6.
- fnott — Keyboard driven and lightweight Wayland notification daemon for wlroots-based compositors.
- LXQt Notification Daemon — Notification server for LXQt.
- MATE Notification Daemon — Notification server for MATE.
- Notification Daemon — The original notification server.
- https://gitlab.gnome.org/Archive/notification-daemon || notification-daemon
- You can run it manually using
/usr/lib/notification-daemon-1.0/notification-daemon
.
- Notify OSD — Notification server for Unity.
- sandsmark-notificationd — Minimalistic notification-daemon with muting support.
- https://github.com/sandsmark/sandsmark-notificationd || sandsmark-notificationd-gitAUR[broken link: package not found]
- statnot — Small, lightweight notification daemon that can output notifications to the root window's title, stdout or FIFO pipes, making it integrate very well with tiling window managers.
- swaync — A simple GTK based notification daemon for Sway.
- twmn — Notification system for tiling window managers.
- wired — Lightweight notification daemon with highly customizable layout blocks, written in Rust.
- Xfce Notification Daemon — Notification server for Xfce.
- https://docs.xfce.org/apps/notifyd/start || xfce4-notifyd
- You can run it manually using
/usr/lib/xfce4/notifyd/xfce4-notifyd
. - Tip: To configure xfce4-notifyd, run the following command:
xfce4-notifyd-config
.
Usage in programming
You can write your own libnotify display messages easily in many programming languages through GObject-Introspection or bindings, or you can simply use bash.
The following examples display a simple "Hello world" notification.
Bash
- Dependency: libnotify
hello_world.sh
#!/bin/bash notify-send 'Hello world!' 'This is an example notification.' --icon=dialog-information
- An overview on the available icons can be found here.
- To send desktop notification to another user, e.g. from a background script running as root:
# systemd-run --machine=user@.host --user notify-send 'Hello world!' 'This is an example notification.'
- Dependency: glib2
hello_world.sh
#!/bin/bash gdbus call --session \ --dest=org.freedesktop.Notifications \ --object-path=/org/freedesktop/Notifications \ --method=org.freedesktop.Notifications.Notify \ "" 0 "" 'Hello world!' 'This is an example notification.' \ '[]' '{"urgency": <1>}' 5000
- See org.freedesktop.Notifications.Notify for more details about the D-Bus interface.
dbus-send
, though being similar togdbus
, does not work because one of the arguments in the methodorg.freedesktop.Notifications.Notify
requires data typevariant
, which is not supported bydbus-send
.
C
- Dependency: glib2
- Build with:
gcc -o hello_world `pkg-config --cflags --libs gio-2.0` hello_world.c
hello_world.c
#include <gio/gio.h> int main() { GApplication *application = g_application_new ("hello.world", G_APPLICATION_FLAGS_NONE); g_application_register (application, NULL, NULL); GNotification *notification = g_notification_new ("Hello world!"); g_notification_set_body (notification, "This is an example notification."); GIcon *icon = g_themed_icon_new ("dialog-information"); g_notification_set_icon (notification, icon); g_application_send_notification (application, NULL, notification); g_object_unref (icon); g_object_unref (notification); g_object_unref (application); return 0; }
- Dependency: libnotify
- Build with:
gcc -o hello_world `pkg-config --cflags --libs libnotify` hello_world.c
hello_world.c
#include <libnotify/notify.h> int main() { notify_init ("Hello world!"); NotifyNotification * Hello = notify_notification_new ("Hello world", "This is an example notification.", "dialog-information"); notify_notification_show (Hello, NULL); g_object_unref(G_OBJECT(Hello)); notify_uninit(); return 0; }
- Dependency: dbus
- Build with:
gcc -o hello_world $(pkg-config --cflags --libs dbus-1) hello_world.c
hello_world.c
#include <dbus-1.0/dbus/dbus.h> int main() { DBusConnection *connection = dbus_bus_get(DBUS_BUS_SESSION, 0); DBusMessage *message = dbus_message_new_method_call( "org.freedesktop.Notifications", "/org/freedesktop/Notifications", "org.freedesktop.Notifications", "Notify"); DBusMessageIter iter[4]; dbus_message_iter_init_append(message, iter); char *application = "hello.world"; dbus_message_iter_append_basic(iter, 's', &application); unsigned id = 0; dbus_message_iter_append_basic(iter, 'u', &id); char *icon = "dialog-information"; dbus_message_iter_append_basic(iter, 's', &icon); char *summary = "Hello world!"; dbus_message_iter_append_basic(iter, 's', &summary); char *body = "This is an example notification."; dbus_message_iter_append_basic(iter, 's', &body); dbus_message_iter_open_container(iter, 'a', "s", iter + 1); dbus_message_iter_close_container(iter, iter + 1); dbus_message_iter_open_container(iter, 'a', "{sv}", iter + 1); dbus_message_iter_open_container(iter + 1, 'e', 0, iter + 2); char *urgency = "urgency"; dbus_message_iter_append_basic(iter + 2, 's', &urgency); dbus_message_iter_open_container(iter + 2, 'v', "y", iter + 3); enum {LOW, NORMAL, CRITICAL}; unsigned char level = LOW; dbus_message_iter_append_basic(iter + 3, 'y', &level); dbus_message_iter_close_container(iter + 2, iter + 3); dbus_message_iter_close_container(iter + 1, iter + 2); dbus_message_iter_close_container(iter, iter + 1); int timeout = 5 * 1000; dbus_message_iter_append_basic(iter, 'i', &timeout); dbus_connection_send(connection, message, 0); dbus_connection_flush(connection); dbus_message_unref(message); dbus_connection_unref(connection); }
C++
- Dependency: glibmm
- Build with:
g++ -o hello_world `pkg-config --cflags --libs giomm-2.4` hello_world.cc
hello_world.cc
#include <giomm-2.4/giomm.h> int main(int argc, char *argv[]) { auto Application = Gio::Application::create("hello.world", Gio::APPLICATION_FLAGS_NONE); Application->register_application(); auto Notification = Gio::Notification::create("Hello world"); Notification->set_body("This is an example notification."); auto Icon = Gio::ThemedIcon::create("dialog-information"); Notification->set_icon (Icon); Application->send_notification(Notification); return 0; }
- Dependency: libnotifymmAUR[broken link: package not found]
- Build with:
g++ -o hello_world `pkg-config --cflags --libs libnotifymm-1.0` hello_world.cc
hello_world.cc
#include <libnotifymm.h> int main(int argc, char *argv[]) { Notify::init("Hello world!"); Notify::Notification Hello("Hello world", "This is an example notification.", "dialog-information"); Hello.show(); return 0; }
C#
- Dependency: notify-sharp-3AUR
- Build with:
mcs -pkg:notify-sharp-3.0 hello_world.cs
- Run with:
mono hello_world.exe
hello_world.cs
using Notifications; public class HelloWorld { static void Main() { var Hello = new Notification(); Hello.Summary = "Hello world!"; Hello.Body = "This is an example notification."; Hello.IconName = "dialog-information"; Hello.Show(); } }
Common Lisp
- Dependency: dbus, death/dbus (from quicklisp)
hello_world.lisp
(defun hello () "send notification with dbus" (let ((app_name "hello.world") (replaces_id 0) (app_icon "dialog-information") (summary "hello.world") (body "Hello world!") (expire_timeout -1)) (dbus:with-open-bus (bus (dbus:session-server-addresses)) (dbus:with-introspected-object (notif bus "/org/freedesktop/Notifications" "org.freedesktop.Notifications") (notif "org.freedesktop.Notifications" "Notify" app_name replaces_id app_icon summary body '() '() expire_timeout))))) (hello)
Crystal
- Dependency: woodruffw/notify.cr (from shards)
- Build with: shards build
hello_world.fs
require "notify" notifier = Notify.new notifier.notify "Hello", body: "World!"
F#
- Dependency: notify-sharp-3AUR
- Makedependency: dotnet-sdk
- Build with:
fsharpc -r:notify-sharp.dll -I:/usr/lib/mono/notify-sharp-3.0/ -I:/usr/lib/mono/gtk-sharp-3.0/ hello_world.fs
- Run with:
mono hello_world.exe
hello_world.fs
open Notifications let Hello = new Notification() Hello.Summary <- "Hello world!" Hello.Body <- "This is an example notification." Hello.IconName <- "dialog-information" Hello.Show()
Genie
hello_world.gs
uses GLib init var Application = new GLib.Application ("hello.world", GLib.ApplicationFlags.FLAGS_NONE); Application.register (); var Notification = new GLib.Notification ("Hello world"); Notification.set_body ("This is an example notification."); var Icon = new GLib.ThemedIcon ("dialog-information"); Notification.set_icon (Icon); Application.send_notification (null, Notification);
hello_world.gs
uses Notify init Notify.init ("Hello world") var Hello=new Notify.Notification ("Hello world!","This is an example notification.","dialog-information") Hello.show ()
Go
- Dependency: libnotify
- Makedependency: go-notify-gitAUR[broken link: package not found]
- Build with:
go build hello_world.go
- (Or run with:
go run hello_world.go
)
hello_world.go
package main import ("github.com/mqu/go-notify") func main() { notify.Init("Hello world") hello := notify.NotificationNew("Hello World!", "This is an example notification.","dialog-information") hello.Show() }
Groovy
- Dependencies: groovy, java-gnomeAUR
- Build with:
groovyc -cp /usr/share/java/gtk.jar HelloWorld.groovy && jar cfe HelloWorld.jar HelloWorld HelloWorld.class
- Run with:
java -cp /usr/share/groovy/embeddable/groovy-all.jar:/usr/share/java/gtk.jar:HelloWorld.jar HelloWorld
orgroovy -cp /usr/share/java/gtk.jar HelloWorld.groovy
HelloWorld.groovy
import org.gnome.gtk.* import org.gnome.notify.* Gtk.init() Notify.init("Hello world") def Hello = new Notification("Hello world!", "This is an example notification.", "dialog-information") Hello.show()
Haskell
- Makedependency: haskell-fdo-notify
- Build with:
ghc -dynamic hello_world
hello_world.hs
import DBus.Notify main = do client <- connectSession let hello = blankNote { summary="Hello world!", body=(Just $ Text "This is an example notification."), appImage=(Just $ Icon "dialog-information") } notification <- notify client hello return 0
IronPython
- Dependencies: notify-sharp-3AUR, ironpythonAUR
- Run with:
ipy hello_world.py
hello_world.py
import clr clr.AddReference('notify-sharp') import Notifications Hello = Notifications.Notification() Hello.Summary = "Hello world!" Hello.Body = "This is an example notification." Hello.IconName = "dialog-information" Hello.Show()
Java
- Dependency: java-gnomeAUR
- Makedependency: java-environment
- Build with:
javac -cp /usr/share/java/gtk.jar HelloWorld.java && jar cfe HelloWorld.jar HelloWorld HelloWorld.class
- Run with:
java -cp /usr/share/java/gtk.jar:HelloWorld.jar HelloWorld
HelloWorld.java
import org.gnome.gtk.Gtk; import org.gnome.notify.Notify; import org.gnome.notify.Notification; public class HelloWorld { public static void main(String[] args) { Gtk.init(args); Notify.init("Hello world"); Notification Hello = new Notification("Hello world!", "This is an example notification.", "dialog-information"); Hello.show(); } }
JavaScript
- Dependency: gjs
hello_world.js
#!/usr/bin/gjs const Gio = imports.gi.Gio; var Application = new Gio.Application ({application_id: "hello.world"}); Application.register (null); var Notification = new Gio.Notification (); Notification.set_title ("Hello world"); Notification.set_body ("This is an example notification."); var Icon = new Gio.ThemedIcon ({name: "dialog-information"}); Notification.set_icon (Icon); Application.send_notification (null, Notification);
hello_world.js
#!/usr/bin/gjs const Notify = imports.gi.Notify; Notify.init ("Hello world"); var Hello=new Notify.Notification ({summary: "Hello world!", body: "This is an example notification.", "icon-name": "dialog-information"}); Hello.show ();
- Dependencies: nodejs, node-dbus-notifier
hello_world.js
#!/usr/bin/env node const notifier = require("node-dbus-notifier"); const notify = new notifier.Notify({ appName: "JavaScript", appIcon: "archlinux-logo", summary: "Hello world!", hints: { urgency: 2, }, body: "This is an example notification.", timeout: 5000, }); notify.addAction("Click Me", () => { console.log("Click Click"); }); notify.show() .then(() => { console.log("notify is closed"); });
JRuby
- Dependencies: java-gnomeAUR, jruby
- Build with:
jrubyc hello_world.rb && jar cfe hello_world.jar hello_world hello_world.class
- Run with:
java -cp /opt/jruby/lib/jruby.jar:hello_world.jar hello_world
orjruby hello_world.rb
hello_world.rb
require '/usr/share/java/gtk.jar' import Java::OrgGnomeGtk::Gtk import Java::OrgGnomeNotify::Notify import Java::OrgGnomeNotify::Notification Gtk.init(nil) Notify.init("Hello world") Hello = Notification.new("Hello world!", "This is an example notification.", "dialog-information") Hello.show
Jython
- Dependencies: java-gnomeAUR, jython
- Run with:
jython -Dpython.path=/usr/share/java/gtk.jar hello_world.py
hello_world.py
from org.gnome.gtk import Gtk from org.gnome.notify import Notify, Notification Gtk.init(None) Notify.init("Hello world") Hello=Notification("Hello world!", "This is an example notification.", "dialog-information") Hello.show()
Lua
- Dependency: lua-lgi-gitAUR
hello_world.lua
#!/usr/bin/lua lgi = require 'lgi' Gio = lgi.require('Gio') Application = Gio.Application.new("hello.world",Gio.ApplicationFlags.FLAGS_NONE); Application:register(); Notification = Gio.Notification.new("Hello world"); Notification:set_body("This is an example notification."); Icon = Gio.ThemedIcon.new("dialog-information"); Notification:set_icon(Icon); Application:send_notification(nil, Notification);
- Dependencies: libnotify, lua-lgi-gitAUR
hello_world.lua
#!/usr/bin/lua lgi = require 'lgi' Notify = lgi.require('Notify') Notify.init("Hello world") Hello=Notify.Notification.new("Hello world","This is an example notification.","dialog-information") Hello:show()
Nemerle
- Dependency: notify-sharp-3AUR
- Makedependency: nemerleAUR
- Build with:
ncc -pkg:notify-sharp-3.0 -out:hello_world.exe hello_world.n
- Run with:
mono hello_world.exe
hello_world.n
using Notifications; public class HelloWorld { static Main() : void { def Hello = Notification(); Hello.Summary = "Hello world!"; Hello.Body = "This is an example notification."; Hello.IconName = "dialog-information"; Hello.Show(); } }
Pascal
- Dependency: libnotify
- Makedependency: fpc, libnotify binding
- Build with:
fpc hello_world
hello_world.pas
program hello_world; uses libnotify; var hello : PNotifyNotification; begin notify_init(argv[0]); hello := notify_notification_new ('Hello world', 'This is an example notification.', 'dialog-information'); notify_notification_show (hello, nil); end.
Perl
Using libnotify
- Dependencies: libnotify, perl-glib-object-introspection
hello_world.pl
#!/usr/bin/perl use Glib::Object::Introspection; Glib::Object::Introspection->setup(basename => 'Notify', version => '0.7', package => 'Notify'); Notify->init; my $hello = Notify::Notification->new('Hello world!', 'This is an example notification.', 'dialog-information'); $hello->show;
Using direct D-Bus calls
- Dependencies: perl-net-dbus
hello_world.pl
#!/usr/bin/perl use Net::DBus; my $bus = Net::DBus->session; my $svc = $bus->get_service('org.freedesktop.Notifications'); my $obj = $svc->get_object('/org/freedesktop/Notifications'); my $id = $obj->Notify('myapp', 0, 'dialog-information', 'Hello world!', 'This is an example notification.', [], {}, 0);
Python
- Dependency: python-gobject
hello_world.py
#!/usr/bin/python3 import gi gi.require_version('Gio', '2.0') from gi.repository import Gio Application = Gio.Application.new("hello.world", Gio.ApplicationFlags.FLAGS_NONE) Application.register() Notification = Gio.Notification.new("Hello world") Notification.set_body("This is an example notification.") Icon = Gio.ThemedIcon.new("dialog-information") Notification.set_icon(Icon) Application.send_notification(None, Notification)
- Dependencies: libnotify, python-gobject
hello_world.py
#!/usr/bin/python3 import gi gi.require_version('Notify', '0.7') from gi.repository import Notify Notify.init("Hello world") Hello = Notify.Notification.new("Hello world", "This is an example notification.", "dialog-information") Hello.show()
- Dependency: python-dbus
hello_world.py
#!/usr/bin/env python3 import dbus obj = dbus.SessionBus().get_object("org.freedesktop.Notifications", "/org/freedesktop/Notifications") obj = dbus.Interface(obj, "org.freedesktop.Notifications") obj.Notify("", 0, "", "Hello world", "This is an example notification.", [], {"urgency": 1}, 10000)
For the arguments in the method Notify
, please refer to the section of org.freedesktop.Notifications.Notify at Desktop Notifications Specification.
Ruby
- Dependencies: libnotify, ruby-gir_ffiAUR[broken link: package not found]
hello_world.rb
#!/usr/bin/ruby require 'gir_ffi' GirFFI.setup :Notify Notify.init("Hello world") Hello = Notify::Notification.new("Hello world!", "This is an example notification.", "dialog-information") Hello.show
Rust
Using notify-rust.
- Makedependency: rust
- Build with:
cargo build
- Run with:
target/debug/hello_world
orcargo run
Cargo.toml
[package] name = "hello_world" version = "0.1.0" [dependencies] notify-rust = "^3"
src/main.rs
extern crate notify_rust; use notify_rust::Notification; fn main(){ Notification::new() .summary("Hello world") .body("This is an example notification.") .icon("dialog-information") .show().unwrap(); }
Scala
- Dependency: java-gnomeAUR (and scalaAUR)
- Makedependency: scalaAUR
- Build with:
scalac -cp /usr/share/java/gtk.jar -d HelloWorld.jar HelloWorld.scala
- Run with:
java -cp /usr/share/java/gtk.jar:HelloWorld.jar HelloWorld
(orscala -cp /usr/share/java/gtk.jar HelloWorld.scala
)
HelloWorld.scala
import org.gnome.gtk._ import org.gnome.notify._ object HelloWorld { def main(args: Array[String]) { Gtk.init(args) Notify.init("Hello world") var Hello = new Notification("Hello world!", "This is an example notification.", "dialog-information") Hello.show() } }
Vala
hello_world.vala
using GLib; public class HelloWorld { static void main () { var Application = new GLib.Application ("hello.world", GLib.ApplicationFlags.FLAGS_NONE); Application.register (); var Notification = new GLib.Notification ("Hello world"); Notification.set_body ("This is an example notification."); var Icon = new GLib.ThemedIcon ("dialog-information"); Notification.set_icon (Icon); Application.send_notification (null, Notification); } }
hello_world.vala
using Notify; public class HelloWorld { static void main () { Notify.init ("Hello world"); var Hello = new Notify.Notification("Hello world!", "This is an example notification.", "dialog-information"); Hello.show (); } }
Visual Basic .NET
- Dependency: notify-sharp-3AUR
- Makedependency: mono-basicAUR
- Build with:
vbnc -r:/usr/lib/mono/notify-sharp-3.0/notify-sharp.dll hello_world.vb
- Run with:
mono hello_world.exe
hello_world.vb
Imports Notifications Public Class Hello Public Shared Sub Main Dim Hello As New Notification Hello.Summary = "Hello world!" Hello.Body = "This is an example notification." Hello.IconName = "dialog-information" Hello.Show End Sub End Class
Tips and tricks
Replace previous notification
Notifications can be replaced if their ID is known; if a new notification request specifies the same ID, it will always replace the old notification. (The libnotify bindings shown above handle this automatically.) Unfortunately notify-send does not report this ID, so alternative tools are required to do this on CLI. One capable CLI-tool is the notify-send.py python script, which provides notify-send syntax with additional ID-reporting and replacing capabilities.
However, with some notification servers (such as Notify-OSD), you can use the string:x-canonical-private-synchronous:
hint with notify-send to achieve the same result.
For example, to get a notification displaying time:
while true; do date=$(date) notify-send "$date" -h string:x-canonical-private-synchronous:my-notification sleep 1 done
Include Buttons or listen for close/on-click of the notification
With the notify-send.py script, actions can be used to display buttons or to listen for the default-action of the notification (usually, when the user clicks on it) and the close-action. When the action-icons hint is set to true and the notification daemon supports this, the buttons will display icons instead of text. The script prints the action identifier or "close" to the command line when the corresponding event has occured. To listen for the default action (on-click), one has to use the action-identfier "default".
Example with icons on buttons:
notify-send.py "Buttons" "Do you like em?" --hint boolean:action-icons:true --action yes:face-cool no:face-sick
Multiple notification servers with D-Bus services
As described in the section Standalone, users can create a D-Bus service so that a notification server can be launched automatically. Some implementations already include the D-Bus service files. However, this causes a problem when multiple notification servers are installed and when some of them come with the service files. For example, installing both dunst and mako without explicitly specifying the desired server, D-Bus then chooses one for the users, and the decision is out of users' control. To avoid the situation, you can override the service used by creating a org.freedesktop.Notifications.service
(see #Standalone) and pointing to the service you want to use, then restarting the session.
Notifications on failed Systemd services
To get notified by failed services, install and run systembus-notify on the target user and follow the instructions given in Systemd#Notifying_about_failed_services, but replace the failure-notification@
template unit with this one:
/etc/systemd/system/failure-notification@.service
[Unit] Description=Send a notification about a failed systemd unit After=Graphical.target [Service] Type=simple ExecStart=/usr/bin/dbus-send --system / net.nuetzlich.SystemNotifications.Notify 'string:%i' 'string:Unit failed'
Sadly, this solution does not yet support setting the urgency or timeout of the notifications, see this issue.
Troubleshooting
Applications hanging for exactly one minute
If applications hang when attempting to show notifications, it might be because of a notification service falsely advertising its availability through the D-Bus service.
For instance, suppose a user recently installed a KDE component that requires plasma-workspace, but the user is still running XFCE. In this case, the KDE notifier will be prioritized, but the user is not running it. The application will hang while waiting for the service, and only after a timeout will it fall back to xfce4-notifyd.
The most noticeable hanging might come from the volume indicator scroll adjustment.
If you are in this situation, you should have two notification handlers:
$ find /usr/share/dbus-1/services/ -name '*Notif*'
org.kde.plasma.Notifications.service org.xfce.xfce4-notifyd.Notifications.service
Of those two, one fails regularly after a 1-minute timeout, as seen in the journal:
# journalctl -g notif
Jul 01 09:40:49 laptop dbus-daemon[866]: [session uid=1000 pid=866] Activating service name='org.freedesktop.Notifications' requested by ':1.193' (uid=1000 pid=5432 comm="/usr/lib/xfce4/panel/wrapper-2.0 /usr/lib/xfce4/pa") Jul 01 09:41:49 laptop plasma_waitforname[6093]: org.kde.knotifications: WaitForName: Service was not registered within timeout Jul 01 09:41:49 laptop dbus-daemon[866]: [session uid=1000 pid=866] Activated service 'org.freedesktop.Notifications' failed: Process org.freedesktop.Notifications exited with status 1
Choosing the service you want to use as described in #Multiple notification servers with D-Bus services will fix the problem.
See also
- Libnotify Reference Manual[dead link 2024-07-30 ⓘ]
- C example (archived version)
- Python notification examples
- Python notify example (french article)