Bug 81067

Summary:	org.freedesktop.DBus.Properties.PropertiesChanged signal is sent on system bus, but not on session bus
Product:	systemd	Reporter:	Tomasz Sterna <tomek>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED INVALID	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	ARM
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Tomasz Sterna 2014-07-08 21:09:47 UTC

When I start a service on a system bus:
# systemctl --system start apkd.service
I see:
dbus-monitor --system "type='signal'"
[...]
signal sender=:1.1 -> dest=(null destination) serial=527 path=/org/freedesktop/systemd1/unit/apkd_2eservice; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged
   string "org.freedesktop.systemd1.Unit"

But when I start a service on session bus:
$ systemctl --user start pebbled.service
I see nothing on:
$ dbus-monitor --session "type='signal'"

Comment 1 Tomasz Sterna 2014-07-08 21:42:25 UTC

nmd
"Note that most signals are sent out only after Subscribe() has been invoked by at least one client."

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