path: root/man/logind.conf.xml

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<refentry id="logind.conf" conditional='ENABLE_LOGIND'
    xmlns:xi="http://www.w3.org/2001/XInclude">
  <refentryinfo>
    <title>logind.conf</title>
    <productname>systemd</productname>

    <authorgroup>
      <author>
        <contrib>Developer</contrib>
        <firstname>Lennart</firstname>
        <surname>Poettering</surname>
        <email>lennart@poettering.net</email>
      </author>
    </authorgroup>
  </refentryinfo>

  <refmeta>
    <refentrytitle>logind.conf</refentrytitle>
    <manvolnum>5</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>logind.conf</refname>
    <refname>logind.conf.d</refname>
    <refpurpose>Login manager configuration files</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <para><filename>/etc/systemd/logind.conf</filename></para>
    <para><filename>/etc/systemd/logind.conf.d/*.conf</filename></para>
    <para><filename>/run/systemd/logind.conf.d/*.conf</filename></para>
    <para><filename>/usr/lib/systemd/logind.conf.d/*.conf</filename></para>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>These files configure various parameters of the systemd
    login manager,
    <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
    </para>
  </refsect1>

  <xi:include href="standard-conf.xml" xpointer="main-conf" />

  <refsect1>
    <title>Options</title>

    <para>All options are configured in the
    <literal>[Login]</literal> section:</para>

    <variablelist>

      <varlistentry>
        <term><varname>NAutoVTs=</varname></term>

        <listitem><para>Takes a positive integer. Configures how many
        virtual terminals (VTs) to allocate by default that, when
        switched to and are previously unused,
        <literal>autovt</literal> services are automatically spawned
        on. These services are instantiated from the template unit
        <filename>autovt@.service</filename> for the respective VT TTY
        name, for example, <filename>autovt@tty4.service</filename>.
        By default, <filename>autovt@.service</filename> is linked to
        <filename>getty@.service</filename>. In other words, login
        prompts are started dynamically as the user switches to unused
        virtual terminals. Hence, this parameter controls how many
        login <literal>gettys</literal> are available on the VTs. If a
        VT is already used by some other subsystem (for example, a
        graphical login), this kind of activation will not be
        attempted. Note that the VT configured in
        <varname>ReserveVT=</varname> is always subject to this kind
        of activation, even if it is not one of the VTs configured
        with the <varname>NAutoVTs=</varname> directive. Defaults to
        6. When set to 0, automatic spawning of
        <literal>autovt</literal> services is
        disabled.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>ReserveVT=</varname></term>

        <listitem><para>Takes a positive integer. Identifies one
        virtual terminal that shall unconditionally be reserved for
        <filename>autovt@.service</filename> activation (see above).
        The VT selected with this option will be marked busy
        unconditionally, so that no other subsystem will allocate it.
        This functionality is useful to ensure that, regardless of how
        many VTs are allocated by other subsystems, one login
        <literal>getty</literal> is always available. Defaults to 6
        (in other words, there will always be a
        <literal>getty</literal> available on Alt-F6.). When set to 0,
        VT reservation is disabled.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>KillUserProcesses=</varname></term>

        <listitem><para>Takes a boolean argument. Configures whether
        the processes of a user should be killed when the user
        completely logs out (i.e. after the user's last session
        ended). Defaults to <literal>no</literal>.</para>

        <para>Note that setting <varname>KillUserProcesses=1</varname>
        will break tools like
        <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>KillOnlyUsers=</varname></term>
        <term><varname>KillExcludeUsers=</varname></term>

        <listitem><para>These settings take space-separated lists of
        usernames that influence the effect of
        <varname>KillUserProcesses=</varname>. If not empty, only
        processes of users listed in <varname>KillOnlyUsers=</varname>
        will be killed when they log out entirely. Processes of users
        listed in <varname>KillExcludeUsers=</varname> are excluded
        from being killed. <varname>KillExcludeUsers=</varname>
        defaults to <literal>root</literal> and takes precedence over
        <varname>KillOnlyUsers=</varname>, which defaults to the empty
        list.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>IdleAction=</varname></term>

        <listitem><para>Configures the action to take when the system
        is idle. Takes one of
        <literal>ignore</literal>,
        <literal>poweroff</literal>,
        <literal>reboot</literal>,
        <literal>halt</literal>,
        <literal>kexec</literal>,
        <literal>suspend</literal>,
        <literal>hibernate</literal>,
        <literal>hybrid-sleep</literal>, and
        <literal>lock</literal>.
        Defaults to <literal>ignore</literal>.</para>

        <para>Note that this requires that user sessions correctly
        report the idle status to the system. The system will execute
        the action after all sessions report that they are idle, no
        idle inhibitor lock is active, and subsequently, the time
        configured with <varname>IdleActionSec=</varname> (see below)
        has expired.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>IdleActionSec=</varname></term>

        <listitem><para>Configures the delay after which the action
        configured in <varname>IdleAction=</varname> (see above) is
        taken after the system is idle.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>InhibitDelayMaxSec=</varname></term>

        <listitem><para>Specifies the maximum time a system shutdown
        or sleep request is delayed due to an inhibitor lock of type
        <literal>delay</literal> being active before the inhibitor is
        ignored and the operation executes anyway. Defaults to
        5.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>HandlePowerKey=</varname></term>
        <term><varname>HandleSuspendKey=</varname></term>
        <term><varname>HandleHibernateKey=</varname></term>
        <term><varname>HandleLidSwitch=</varname></term>
        <term><varname>HandleLidSwitchDocked=</varname></term>

        <listitem><para>Controls whether logind shall handle the
        system power and sleep keys and the lid switch to trigger
        actions such as system power-off or suspend. Can be one of
        <literal>ignore</literal>,
        <literal>poweroff</literal>,
        <literal>reboot</literal>,
        <literal>halt</literal>,
        <literal>kexec</literal>,
        <literal>suspend</literal>,
        <literal>hibernate</literal>,
        <literal>hybrid-sleep</literal>, and
        <literal>lock</literal>.
        If <literal>ignore</literal>, logind will never handle these
        keys. If <literal>lock</literal>, all running sessions will be
        screen-locked; otherwise, the specified action will be taken
        in the respective event. Only input devices with the
        <literal>power-switch</literal> udev tag will be watched for
        key/lid switch events. <varname>HandlePowerKey=</varname>
        defaults to <literal>poweroff</literal>.
        <varname>HandleSuspendKey=</varname> and
        <varname>HandleLidSwitch=</varname> default to
        <literal>suspend</literal>.
        <varname>HandleLidSwitchDocked=</varname> defaults to
        <literal>ignore</literal>.
        <varname>HandleHibernateKey=</varname> defaults to
        <literal>hibernate</literal>. If the system is inserted in a
        docking station, or if more than one display is connected, the
        action specified by <varname>HandleLidSwitchDocked=</varname>
        occurs; otherwise the <varname>HandleLidSwitch=</varname>
        action occurs.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>PowerKeyIgnoreInhibited=</varname></term>
        <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
        <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
        <term><varname>LidSwitchIgnoreInhibited=</varname></term>

        <listitem><para>Controls whether actions triggered by the
        power and sleep keys and the lid switch are subject to
        inhibitor locks. These settings take boolean arguments. If
        <literal>no</literal>, the inhibitor locks taken by
        applications in order to block the requested operation are
        respected. If <literal>yes</literal>, the requested operation
        is executed in any case.
        <varname>PowerKeyIgnoreInhibited=</varname>,
        <varname>SuspendKeyIgnoreInhibited=</varname> and
        <varname>HibernateKeyIgnoreInhibited=</varname> default to
        <literal>no</literal>.
        <varname>LidSwitchIgnoreInhibited=</varname> defaults to
        <literal>yes</literal>. This means that the lid switch does
        not respect suspend blockers by default, but the power and
        sleep keys do. </para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>HoldoffTimeoutSec=</varname></term>

        <listitem><para>Specifies the timeout after system startup or
        system resume in which systemd will hold off on reacting to
        LID events. This is required for the system to properly
        detect any hotplugged devices so systemd can ignore LID events
        if external monitors, or docks, are connected. If set to 0,
        systemd will always react immediately, possibly before the
        kernel fully probed all hotplugged devices. This is safe, as
        long as you do not care for systemd to account for devices
        that have been plugged or unplugged while the system was off.
        Defaults to 30s.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>RuntimeDirectorySize=</varname></term>

        <listitem><para>Sets the size limit on the
        <varname>$XDG_RUNTIME_DIR</varname> runtime directory for each
        user who logs in. Takes a size in bytes, optionally suffixed
        with the usual K, G, M, and T suffixes, to the base 1024
        (IEC). Alternatively, a numerical percentage suffixed by
        <literal>%</literal> may be specified, which sets the size
        limit relative to the amount of physical RAM. Defaults to 10%.
        Note that this size is a safety limit only. As each runtime
        directory is a tmpfs file system, it will only consume as much
        memory as is needed. </para></listitem>
      </varlistentry>

      <varlistentry>
        <term><varname>RemoveIPC=</varname></term>

        <listitem><para>Controls whether System V and POSIX IPC
        objects belonging to the user shall be removed when the user
        fully logs out. Takes a boolean argument. If enabled, the user
        may not consume IPC resources after the last of the user's
        sessions terminated. This covers System V semaphores, shared
        memory and message queues, as well as POSIX shared memory and
        message queues. Note that IPC objects of the root user are
        excluded from the effect of this setting. Defaults to
        <literal>yes</literal>.</para></listitem>
      </varlistentry>

    </variablelist>
  </refsect1>

  <refsect1>
      <title>See Also</title>
      <para>
        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
        <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
        <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
        <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
      </para>
  </refsect1>

</refentry>