Home / user-63324

totaam's questions

Martin Hope
totaam
Asked: 2014-02-06 06:51:02 +0800 CST
  • 3

I want to get notifications via dbus when the system resumes from suspended state. Following these existing questions:

  1. What DBus signal is sent on system suspend?
  2. How do I detect when my system wakes up from suspend via DBus or similar in a python app?

But none of the examples found in the links above fire when I suspend or resume. dbus-monitor does not see anything either:

 dbus-monitor --system "type='signal',interface='org.freedesktop.UPower'"

I also tried using this code to fire the signal manually (easier):

#taken from /usr/lib/systemd/system/upower.service
dbus-send --system --type=signal --dest=org.freedesktop.UPower \
    /org/freedesktop/UPower org.freedesktop.UPower.Resuming

Same result. I must be missing something really obvious. Fedora 20 x86_64. (dbus is installed, running and working fine AFAICT) Fedora 20 uses logind, but I cannot see any 'Resuming' signal there. Suspend and resume is difficult to test with VirtualBox, so I can't really compare with other OSes.

Interestingly, qdbus sees lots of services (org.gnome.SessionManager, etc..) , but nothing power related, but then again, it doesn't see login1 either..

qdbus | grep -i power | wc -l
0
systemd