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[Alkis Georgopoulos <221363@xxxxxxxxxxxxxxxxxx>]

Is this still an issue in recent Ubuntu/LTSP versions?

** Changed in: ltsp (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/221363

Title:
  Policy Kit Unlock Buttons Greyed Out when using NX / VNC / LTSP

Status in FreeNX Server:
  Fix Released
Status in gdm:
  New
Status in PolicyKit:
  Invalid
Status in system-tools-backends:
  Fix Released
Status in ltsp package in Ubuntu:
  Incomplete
Status in policykit package in Ubuntu:
  Invalid
Status in policykit-1 package in Ubuntu:
  Invalid
Status in system-tools-backends package in Ubuntu:
  Triaged

Bug description:
  I installed 8.04 LTS server on a system.  Then installed ubuntu-
  desktop using apt.  Installed Nomachine's NX server and connected to
  it.

  The unlock buttons on Users and Groups or Network are greyed out and
  un-accessible.  Tried running from a term 'sudo users-admin' with the
  same results.

  Works fine with VNC and NX "Shadow" session however this is not really
  acceptable as it means a session has to be running on console first.

  I have tried to enable every option in Authorizations to allow the
  remote session to have privileges to no avail.

  output of dpkg relevant packages:

  ii  gnome-system-t 2.22.0-0ubuntu Cross-platform configuration utilities for G
  ii  liboobs-1-4    2.22.0-0ubuntu GObject based interface to system-tools-back
  ii  policykit      0.7-2ubuntu7   framework for managing administrative polici
  ii  system-tools-b 2.6.0-0ubuntu7 System Tools to manage computer configuratio

  ================
  == Workarounds  ==
  ================

  1) *Jaunty or older*

  From
  https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/238799/comments/16
  (the packages from comment 24 are broken links now):

  I was able to get access via VNC tunneled through SSH by changing the
  following settings in policykit. You can do it locally via
  Authorizations, or you can do it remotely using "sudo ck-launch-
  session polkit-gnome-authorization" in a terminal window in your
  tunneled VNC session. This worked on Ubuntu 9.04 Server RC running
  xubuntu-desktop, so as always YMMV.

  For system configuration, change all implicit authorizations under org
  -> freedesktop -> systemtoolsbackends -> Manage System Configuration
  (org.freedesktop.systemtoolsbackends.set) to "Admin Authentication."

  For user management, change all implicit authorizations under org ->
  freedesktop -> systemtoolsbackends -> self -> Change User
  Configuration (org.freedesktop.systemtoolsbackends.self.set) to
  "Authentication."

  Reset gdm by rebooting or running "sudo /etc/init.d/gdm restart" from
  a terminal window, and you should be able to unlock the user settings
  control panel and other similarly useful things through your tunneled
  VNC session.

  2) *Karmic or newer*

  Apply this patch: http://launchpadlibrarian.net/39471473/polkit-systemtools-remote-allow.patch
  # sudo cp -a /usr/share/polkit-1/actions/org.freedesktop.SystemToolsBackends.policy /usr/share/polkit-1/actions/org.freedesktop.SystemToolsBackends.policy.ori
  # sudo patch /usr/share/polkit-1/actions/org.freedesktop.SystemToolsBackends.policy polkit-systemtools-remote-allow.patch

  Then kill polkitd, it will be restarted automatically:
  # sudo pkill polkitd

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