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[Bug 1439771] Re: wpa_supplicant[874]: dbus: Failed to construct signal after 'suspend'

 

I isolated the problem down to an incompatibility between xfce4-power-
manager and systemd. When the suspend timeout is reached or the lid is
closed, the network manager is being woken before the system has
suspended which causes it not to wake on resume.

Switching from systemd back to Upstart fixes the problem.

https://wiki.ubuntu.com/SystemdForUpstartUsers

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https://bugs.launchpad.net/bugs/1439771

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

Status in dbus 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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References