如何防止 Linux Ubuntu 笔记本电脑合盖时屏幕关闭导致系统挂起/休眠 All In One
Ubuntu 22.04.5 LTS 电源管理
Ubuntu 22.04.5 LTS 电源管理
questions
场景：Mac 通过 SSH 远程访问 Ubuntu 部署的 OpenClaw 服务, 由于笔记本屏幕合盖后会导致系统进入休眠状态，导致 SSH 链接中断 ❌
xgqfms@ai2026:~$ client_loop: ssh_packet_write_poll: Connection to 192.168.124.25 port 22: Host is down
solution
修改 Linux 系统登录配置文件
/etc/systemd/logind.conf
- sudo 进入文件编辑
# VIM (i, esc, :wq)
$ sudo vim /etc/systemd/logind.conf
# or
$ sudo nano /etc/systemd/logind.conf# vscode + root passowrd
$ code /etc/systemd/logind.conf
- 去掉以下几个字段的注释符号
#,suspend/hibernate改成ignore
suspend ❌
[Login]#HandleLidSwitch=suspend
#HandleLidSwitchExternalPower=suspend
#HandleLidSwitchDocked=ignoreignore ✅
[Login]HandleLidSwitch=ignore
HandleLidSwitchExternalPower=ignore
HandleLidSwitchDocked=ignoreHandleLidSwitch：合盖时
ExternalPower：插电源时
Docked：接外接显示器
- 查看
$ 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. Local configuration
# should be created by either modifying this file, or by creating "drop-ins" in
# the logind.conf.d/ subdirectory. The latter is generally recommended.
# Defaults can be restored by simply deleting this file and all drop-ins.
#
# Use 'systemd-analyze cat-config systemd/logind.conf' to display the full config.
#
# See logind.conf(5) for details.[Login]
#NAutoVTs=6
#ReserveVT=6
#KillUserProcesses=no
#KillOnlyUsers=
#KillExcludeUsers=root
#InhibitDelayMaxSec=5
#UserStopDelaySec=10
#HandlePowerKey=poweroff
#HandleSuspendKey=ignore
#HandleHibernateKey=ignore
HandleLidSwitch=ignore
HandleLidSwitchExternalPower=ignore
HandleLidSwitchDocked=ignore
#HandleRebootKey=reboot
#PowerKeyIgnoreInhibited=no
#SuspendKeyIgnoreInhibited=no
#HibernateKeyIgnoreInhibited=no
#LidSwitchIgnoreInhibited=yes
#RebootKeyIgnoreInhibited=no
#HoldoffTimeoutSec=30s
#IdleAction=ignore
#IdleActionSec=30min
#RuntimeDirectorySize=10%
#RuntimeDirectoryInodesMax=400k
#RemoveIPC=yes
#InhibitorsMax=8192
#SessionsMax=8192- 验证
- 重启系统
$ sudo reboot# ⚠️ 如果不是无 GUI 的服务器版 Ubuntu，千万不要使用这个命令，会导致重新登录后出现黑屏问题 ⚠️
$ sudo systemctl restart systemd-logind
demos
使用 mac SSH 远程访问 OpenClaw
- ssh server
# ubuntu
$ sudo apt update
$ sudo apt install openssh-server -y# 启动 SSH
$ sudo systemctl start ssh
# 查看 SSH 状态
$ sudo systemctl status ssh# 设置开机自动启动服务
$ sudo systemctl enable ssh
$ sudo reboot$ sudo systemctl status ssh
[sudo] password for xgqfms:
Sorry, try again.
[sudo] password for xgqfms:
● ssh.service - OpenBSD Secure Shell serverLoaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)Active: active (running) since Fri 2026-03-13 17:10:08 CST; 2 days agoDocs: man:sshd(8)man:sshd_config(5)Main PID: 792 (sshd)Tasks: 1 (limit: 9235)Memory: 6.5MCPU: 326msCGroup: /system.slice/ssh.service└─792 "sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups"3月 13 17:10:08 ai2026 systemd[1]: Starting OpenBSD Secure Shell server...
3月 13 17:10:08 ai2026 sshd[792]: Server listening on 0.0.0.0 port 22.
3月 13 17:10:08 ai2026 sshd[792]: Server listening on :: port 22.
3月 13 17:10:08 ai2026 systemd[1]: Started OpenBSD Secure Shell server.
3月 13 17:13:24 ai2026 sshd[4580]: pam_unix(sshd:auth): authentication failure; logname= ui>
3月 13 17:13:26 ai2026 sshd[4580]: Failed password for xgqfms from 192.168.124.23 port 5650>
3月 13 17:13:33 ai2026 sshd[4580]: Accepted password for xgqfms from 192.168.124.23 port 56>
3月 13 17:13:33 ai2026 sshd[4580]: pam_unix(sshd:session): session opened for user xgqfms(u>
3月 15 16:11:07 ai2026 sshd[20968]: Accepted password for xgqfms from 192.168.124.23 port 5>
3月 15 16:11:07 ai2026 sshd[20968]: pam_unix(sshd:session): session opened for user xgqfms(>- ssh client
# mac
$ ssh username@ip_address
# paasword
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