Provided by: systemd_237-3ubuntu10_amd64 bug

NAME

       logind.conf, logind.conf.d - Login manager configuration files

SYNOPSIS

       /etc/systemd/logind.conf

       /etc/systemd/logind.conf.d/*.conf

       /run/systemd/logind.conf.d/*.conf

       /usr/lib/systemd/logind.conf.d/*.conf

DESCRIPTION

       These files configure various parameters of the systemd login manager, systemd-
       logind.service(8).

CONFIGURATION DIRECTORIES AND PRECEDENCE

       The default configuration is defined during compilation, so a configuration file is only
       needed when it is necessary to deviate from those defaults. By default, the configuration
       file in /etc/systemd/ contains commented out entries showing the defaults as a guide to
       the administrator. This file can be edited to create local overrides.

       When packages need to customize the configuration, they can install configuration snippets
       in /usr/lib/systemd/*.conf.d/. Files in /etc/ are reserved for the local administrator,
       who may use this logic to override the configuration files installed by vendor packages.
       The main configuration file is read before any of the configuration directories, and has
       the lowest precedence; entries in a file in any configuration directory override entries
       in the single configuration file. Files in the *.conf.d/ configuration subdirectories are
       sorted by their filename in lexicographic order, regardless of which of the subdirectories
       they reside in. When multiple files specify the same option, for options which accept just
       a single value, the entry in the file with the lexicographically latest name takes
       precedence. For options which accept a list of values, entries are collected as they occur
       in files sorted lexicographically. It is recommended to prefix all filenames in those
       subdirectories with a two-digit number and a dash, to simplify the ordering of the files.

       To disable a configuration file supplied by the vendor, the recommended way is to place a
       symlink to /dev/null in the configuration directory in /etc/, with the same filename as
       the vendor configuration file.

OPTIONS

       All options are configured in the "[Login]" section:

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

       ReserveVT=
           Takes a positive integer. Identifies one virtual terminal that shall unconditionally
           be reserved for autovt@.service 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 "getty" is always available. Defaults to 6
           (in other words, there will always be a "getty" available on Alt-F6.). When set to 0,
           VT reservation is disabled.

       KillUserProcesses=
           Takes a boolean argument. Configures whether the processes of a user should be killed
           when the user logs out. If true, the scope unit corresponding to the session and all
           processes inside that scope will be terminated. If false, the scope is "abandoned",
           see systemd.scope(5), and processes are not killed. Defaults to "yes", but see the
           options KillOnlyUsers= and KillExcludeUsers= below.

           In addition to session processes, user process may run under the user manager unit
           user@.service. Depending on the linger settings, this may allow users to run processes
           independent of their login sessions. See the description of enable-linger in
           loginctl(1).

           Note that setting KillUserProcesses=yes will break tools like screen(1) and tmux(1),
           unless they are moved out of the session scope. See example in systemd-run(1).

       KillOnlyUsers=, KillExcludeUsers=
           These settings take space-separated lists of usernames that override the
           KillUserProcesses= setting. A user name may be added to KillExcludeUsers= to exclude
           the processes in the session scopes of that user from being killed even if
           KillUserProcesses=yes is set. If KillExcludeUsers= is not set, the "root" user is
           excluded by default.  KillExcludeUsers= may be set to an empty value to override this
           default. If a user is not excluded, KillOnlyUsers= is checked next. If this setting is
           specified, only the session scopes of those users will be killed. Otherwise, users are
           subject to the KillUserProcesses=yes setting.

       IdleAction=
           Configures the action to take when the system is idle. Takes one of "ignore",
           "poweroff", "reboot", "halt", "kexec", "suspend", "hibernate", "hybrid-sleep",
           "suspend-then-hibernate", and "lock". Defaults to "ignore".

           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
           IdleActionSec= (see below) has expired.

       IdleActionSec=
           Configures the delay after which the action configured in IdleAction= (see above) is
           taken after the system is idle.

       InhibitDelayMaxSec=
           Specifies the maximum time a system shutdown or sleep request is delayed due to an
           inhibitor lock of type "delay" being active before the inhibitor is ignored and the
           operation executes anyway. Defaults to 5.

       HandlePowerKey=, HandleSuspendKey=, HandleHibernateKey=, HandleLidSwitch=,
       HandleLidSwitchDocked=
           Controls how 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 "ignore",
           "poweroff", "reboot", "halt", "kexec", "suspend", "hibernate", "hybrid-sleep",
           "suspend-then-hibernate", and "lock". If "ignore", logind will never handle these
           keys. If "lock", all running sessions will be screen-locked; otherwise, the specified
           action will be taken in the respective event. Only input devices with the
           "power-switch" udev tag will be watched for key/lid switch events.  HandlePowerKey=
           defaults to "poweroff".  HandleSuspendKey= and HandleLidSwitch= default to "suspend".
           HandleLidSwitchDocked= defaults to "ignore".  HandleHibernateKey= defaults to
           "hibernate". If the system is inserted in a docking station, or if more than one
           display is connected, the action specified by HandleLidSwitchDocked= occurs; otherwise
           the HandleLidSwitch= action occurs.

           A different application may disable logind's handling of system power and sleep keys
           and the lid switch by taking a low-level inhibitor lock ("handle-power-key",
           "handle-suspend-key", "handle-hibernate-key", "handle-lid-switch"). This is most
           commonly used by graphical desktop environments to take over suspend and hibernation
           handling, and to use their own configuration mechanisms. If a low-level inhibitor lock
           is taken, logind will not take any action when that key or switch is triggered and the
           Handle*= settings are irrelevant.

       PowerKeyIgnoreInhibited=, SuspendKeyIgnoreInhibited=, HibernateKeyIgnoreInhibited=,
       LidSwitchIgnoreInhibited=
           Controls whether actions that systemd-logind takes when the power and sleep keys and
           the lid switch are triggered are subject to high-level inhibitor locks ("shutdown",
           "sleep", "idle"). Low level inhibitor locks ("handle-power-key", "handle-suspend-key",
           "handle-hibernate-key", "handle-lid-switch"), are always honored, irrespective of this
           setting.

           These settings take boolean arguments. If "no", the inhibitor locks taken by
           applications are respected. If "yes", "shutdown", "sleep", and "idle" inhibitor locks
           are ignored.  PowerKeyIgnoreInhibited=, SuspendKeyIgnoreInhibited=, and
           HibernateKeyIgnoreInhibited= default to "no".  LidSwitchIgnoreInhibited= defaults to
           "yes". This means that when systemd-logind is handling events by itself (no low level
           inhibitor locks are taken by another application), the lid switch does not respect
           suspend blockers by default, but the power and sleep keys do.

       HoldoffTimeoutSec=
           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.

       RuntimeDirectorySize=
           Sets the size limit on the $XDG_RUNTIME_DIR 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 "%" 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.

       InhibitorsMax=
           Controls the maximum number of concurrent inhibitors to permit. Defaults to 8192 (8K).

       SessionsMax=
           Controls the maximum number of concurrent user sessions to manage. Defaults to 8192
           (8K). Depending on how the pam_systemd.so module is included in the PAM stack
           configuration, further login sessions will either be refused, or permitted but not
           tracked by systemd-logind.

       UserTasksMax=
           Sets the maximum number of OS tasks each user may run concurrently. This controls the
           TasksMax= setting of the per-user slice unit, see systemd.resource-control(5) for
           details. If assigned the special value "infinity", no tasks limit is applied. Defaults
           to 33%, which equals 10813 with the kernel's defaults on the host, but might be
           smaller in OS containers.

       RemoveIPC=
           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 and other system users are
           excluded from the effect of this setting. Defaults to "yes".

SEE ALSO

       systemd(1), systemd-logind.service(8), loginctl(1), systemd-system.conf(5)