I filed this bug because I have tried all known workarounds, but failed
to resolve the problem:
- appended to /etc/pam.d/lightdm
session required pam_loginuid.so
session required pam_systemd.so
- ran 'sudo pam-auth-update --force'
- reinstalled policykit-1 and libpam packages
- reinstalled 'sudo' package
- removed Skype
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Touch seeded packages, which is subscribed to policykit-1 in Ubuntu.
https://bugs.launchpad.net/bugs/1411895
Title:
Unable to start polkit-gnome-authentication-agent-1
Status in policykit-1 package in Ubuntu:
New
Bug description:
After update from Precise to Trusty, I am unable to perform
administrative tasks through GUI (restart/shutdown, network
management, mount USB disks, start Synaptics package manager, etc.)
Even though it is checked in Startup Applications, polkit-gnome-
authentication-agent-1 is not running.
After attempting to manually start it, it displays the following
error:
(polkit-gnome-authentication-agent-1:4759): polkit-gnome-1-WARNING **:
Unable to determine the session we are in: No session for pid 4759
I am using LightDM as the display manager.
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Kernel: 3.13.0-44-generic
Package: policykit-1: 0.105-4ubuntu2 (amd64)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1411895/+subscriptions
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