pkexec can not start any GUI application

Question

I am running Ubuntu 13.04, Gnome 3.6.

There is something amiss with pkexec that is not allowing it to start any gui application.

pkexec synaptic in a zsh terminal produces a box asking for admin password. On entering the correct password, it shows:

No protocol specified

** (synaptic:6053): WARNING **: Could not open X display
No protocol specified

(synaptic:6053): Gtk-WARNING **: cannot open display: :0

The result is the same if I replace synaptic with nautilus or run synaptic-pkexec. From the same terminal, both the applications run correctly (a box asking for a password followed by the application launching) when launched as gksu nautilus or gksu synaptic

However, pkexec ls / produces the box asking for password and on entering the password, it displays the listing in the terminal.

The contents of /usr/share/polkit-1/actions/com.ubuntu.pkexec.synaptic.policy are:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
 "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd">
<policyconfig>

  <action id="com.ubuntu.pkexec.synaptic">
    <message>Authentication is required to run the Synaptic Package Manager</message>
    <message xml:lang="ru">Для запуска менеджера пакетов Synaptic требуется аутентификация</message>
    <icon_name>synaptic</icon_name>
    <defaults>
      <allow_any>auth_admin</allow_any>
      <allow_inactive>auth_admin</allow_inactive>
      <allow_active>auth_admin</allow_active>
    </defaults>
    <annotate key="org.freedesktop.policykit.exec.path">/usr/sbin/synaptic</annotate>
    <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
  </action>

</policyconfig>%

What is happening? How do I set it right?

Also, a sad thing, a crucial piece of software like pkexec misbehaves!

pkexec can not start any GUI application

0 Answers0