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[Vindicator <1439771@xxxxxxxxxxxxxxxxxx>]

I'm experiencing this with the regular Gnome 15.04.
It happened while I've been continuously switching "Enable Wi-fi" on/off while messing with my router because my SSID wasn't showing.
It was from a desktop after a reboot.
Restarting the "NetworkManager.service" (which was still active and running) brought back the wifi functionality.

$ journalctl -xe
*****
Jul 16 07:36:33 devx64 wpa_supplicant[1346]: rfkill: WLAN soft blocked
Jul 16 07:36:33 devx64 NetworkManager[1111]: <info> WiFi hardware radio set disabled
Jul 16 07:36:33 devx64 NetworkManager[1111]: <info> (wlan0): device state change: disconnected -> unavailable (reason 'none') [30 20 0]
Jul 16 07:36:33 devx64 NetworkManager[1111]: <info> (wlan0): deactivating device (reason 'none') [0]
Jul 16 07:36:33 devx64 NetworkManager[1111]: <info> WiFi now disabled by radio killswitch
Jul 16 07:37:02 devx64 NetworkManager[1111]: <info> WiFi hardware radio set enabled
Jul 16 07:37:02 devx64 NetworkManager[1111]: <info> WiFi now enabled by radio killswitch
Jul 16 07:37:02 devx64 wpa_supplicant[1346]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none
Jul 16 07:37:02 devx64 wpa_supplicant[1346]: dbus: Failed to construct signal
Jul 16 07:37:02 devx64 NetworkManager[1111]: <warn> could not get interface properties: No readable properties in this interface.
Jul 16 07:37:02 devx64 NetworkManager[1111]: <info> (wlan0): supplicant interface state: starting -> ready
Jul 16 07:37:02 devx64 NetworkManager[1111]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [
Jul 16 07:37:02 devx64 NetworkManager[1111]: <warn> could not get interface properties: No readable properties in this interface.
*****

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dbus in Ubuntu.
https://bugs.launchpad.net/bugs/1439771

Title:
  wpa_supplicant[874]: dbus: Failed to construct signal after 'suspend'

Status in dbus package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  The Wifi network can't connect after the wake up from suspend. Xubuntu
  15.04

  I'll post more useful details (journalctl log) as a comment to this
  bug report.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: dbus 1.8.12-1ubuntu5
  Uname: Linux 4.0.0-040000rc5-generic x86_64
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Apr  2 18:18:56 2015
  InstallationDate: Installed on 2015-03-27 (5 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  SourcePackage: dbus
  UpgradeStatus: No upgrade log present (probably fresh install)

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