HowTo Prevent A Laptop Lid Close Suspension

Overview

This page demonstrates how one can shut the lid of a laptop computer running NST or Fedora without suspending the system. This is especially useful when NST is booted in console mode. The systemd-logind.service can be configured to "ignore" the suspension system power action. This systemd service handles various hardware state system power functionality.

NST Version Below: 40 - Edit Configuration File for systemd-logind.service

The systemd-logind.service has a configuration file: "/etc/systemd/logind.conf" that contains an entry for controlling the system power when the lid switch is in the Closed position. If one wants to allow an NST system running on a laptop computer not to enter the Suspension power state, then the HandleLidSwitch entry needs to be set to: "ignore".

The HandleLidSwitch entry is set to: "ignore" in the listing below for file: "/etc/systemd/logind.conf"

[root@shopper2 ~]# cat /etc/systemd/logind.conf 
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See logind.conf(5) for details.

[Login]
#NAutoVTs=6
#ReserveVT=6
#KillUserProcesses=no
#KillOnlyUsers=
#KillExcludeUsers=root
#InhibitDelayMaxSec=5
#HandlePowerKey=poweroff
#HandleSuspendKey=suspend
#HandleHibernateKey=hibernate
HandleLidSwitch=ignore
#HandleLidSwitchDocked=ignore
#PowerKeyIgnoreInhibited=no
#SuspendKeyIgnoreInhibited=no
#HibernateKeyIgnoreInhibited=no
#LidSwitchIgnoreInhibited=yes
#HoldoffTimeoutSec=30s
#IdleAction=ignore
#IdleActionSec=30min
#RuntimeDirectorySize=10%
#RemoveIPC=yes
#InhibitorsMax=8192
#SessionsMax=8192
#UserTasksMax=33%
[root@shopper2 ~]#

NST Version 40 or Above - Edit Configuration File for systemd-logind.service

• See man pages: man systemd-logind and logind.conf
• Create directory: "/etc/systemd/logind.conf.d/"
• Copy file: "/usr/lib/systemd/logind.conf" to "/etc/systemd/logind.conf.d/"
• Uncomment in the file below

1. This file is part of systemd.
3. systemd is free software; you can redistribute it and/or modify it under the
4. terms of the GNU Lesser General Public License as published by the Free
5. Software Foundation; either version 2.1 of the License, or (at your option)
6. any later version.
8. Entries in this file show the compile time defaults. Local configuration
9. should be created by either modifying this file (or a copy of it placed in
10. /etc/ if the original file is shipped in /usr/), or by creating "drop-ins" in
11. the /etc/systemd/logind.conf.d/ directory. The latter is generally
12. recommended. Defaults can be restored by simply deleting the main
13. configuration file and all drop-ins located in /etc/.
15. Use 'systemd-analyze cat-config systemd/logind.conf' to display the full config.
17. See logind.conf(5) for details.

[Login]

1. NAutoVTs=6
2. ReserveVT=6
3. KillUserProcesses=no
4. KillOnlyUsers=
5. KillExcludeUsers=root
6. InhibitDelayMaxSec=5
7. UserStopDelaySec=10
8. HandlePowerKey=poweroff
9. HandlePowerKeyLongPress=ignore
10. HandleRebootKey=reboot
11. HandleRebootKeyLongPress=poweroff
12. HandleSuspendKey=suspend
13. HandleSuspendKeyLongPress=hibernate
14. HandleHibernateKey=hibernate
15. HandleHibernateKeyLongPress=ignore

HandleLidSwitch=ignore HandleLidSwitchExternalPower=ignore HandleLidSwitchDocked=ignore

1. PowerKeyIgnoreInhibited=no
2. SuspendKeyIgnoreInhibited=no
3. HibernateKeyIgnoreInhibited=no
4. LidSwitchIgnoreInhibited=yes
5. RebootKeyIgnoreInhibited=no
6. HoldoffTimeoutSec=30s
7. IdleAction=ignore
8. IdleActionSec=30min
9. RuntimeDirectorySize=10%
10. RuntimeDirectoryInodesMax=
11. RemoveIPC=yes
12. InhibitorsMax=8192
13. SessionsMax=8192
14. StopIdleSessionSec=infinity