设置debian笔记本电脑合盖熄屏但不断网

修改 systemd-logind

sudo nano /etc/systemd/logind.conf

修改下两行：

HandleLidSwitch=ignore
HandleLidSwitchExternalPower=ignore

sudo systemctl restart systemd-logind

• 可能需要 ctrl+C，不然会一直卡住

安装 acpid

acpid (Advanced Configuration and Power Interface daemon) 可以监听 ACPI 事件，如合上盖子。

sudo apt install acpid

创建盖子合上事件的脚本：

sudo nano /etc/acpi/events/lid_close_screen_off

内容：

event=button/lid LID close
action=/etc/acpi/lid_close_screen_off.sh

创建屏幕关闭的动作脚本：

sudo nano /etc/acpi/lid_close_screen_off.sh

内容：

#!/bin/bash
logger "Lid close detected. Attempting to turn off display."

# 遍历所有活跃的图形会话
# loginctl list-sessions 列出所有会话
# grep "active" 过滤出活跃会话
# grep "graphical" 进一步过滤出图形会话
# awk '{print $1}' 提取会话ID
ACTIVE_SESSIONS=$(loginctl list-sessions | grep "active" | grep "graphical" | awk '{print $1}')

for SESSION_ID in $ACTIVE_SESSIONS; do
    # 获取当前会话的用户、显示器和XAUTHORITY文件路径
    USER=$(loginctl show-session "$SESSION_ID" -p User | cut -d'=' -f2)
    DISPLAY_VAR=$(loginctl show-session "$SESSION_ID" -p Display | cut -d'=' -f2)
    XAUTHORITY_VAR=$(loginctl show-session "$SESSION_ID" -p XAuthority | cut -d'=' -f2)

    if [ -n "$USER" ] && [ -n "$DISPLAY_VAR" ] && [ -n "$XAUTHORITY_VAR" ]; then
        logger "Found active graphical session for user $USER on display $DISPLAY_VAR with XAUTHORITY $XAUTHORITY_VAR"
        # 以该用户的身份，使用其DISPLAY和XAUTHORITY变量执行 xset dpms force off 命令
        # 'su - "$USER" -c "..."' 确保在正确的用户和环境中执行命令
        su - "$USER" -c "export DISPLAY=$DISPLAY_VAR; export XAUTHORITY=$XAUTHORITY_VAR; /usr/bin/xset dpms force off"
        if [ $? -eq 0 ]; then
            logger "Successfully turned off display for user $USER on $DISPLAY_VAR."
            exit 0 # 如果成功关闭一个显示器，则退出
        else
            logger "Failed to turn off display for user $USER on $DISPLAY_VAR."
        fi
    fi
done

logger "No graphical session found or could not turn off display."

赋予脚本执行权限：

sudo chmod +x /etc/acpi/lid_close_screen_off.sh

创建盖子打开事件的脚本（用于重新打开屏幕）：

sudo nano /etc/acpi/events/lid_open_screen_on

内容：

event=button/lid LID open
action=/etc/acpi/lid_open_screen_on.sh

创建屏幕打开的动作脚本：

sudo nano /etc/acpi/lid_open_screen_on.sh

内容：

#!/bin/bash
logger "Lid open detected. Attempting to turn on display."

ACTIVE_SESSIONS=$(loginctl list-sessions | grep "active" | grep "graphical" | awk '{print $1}')

for SESSION_ID in $ACTIVE_SESSIONS; do
    USER=$(loginctl show-session "$SESSION_ID" -p User | cut -d'=' -f2)
    DISPLAY_VAR=$(loginctl show-session "$SESSION_ID" -p Display | cut -d'=' -f2)
    XAUTHORITY_VAR=$(loginctl show-session "$SESSION_ID" -p XAuthority | cut -d'=' -f2)

    if [ -n "$USER" ] && [ -n "$DISPLAY_VAR" ] && [ -n "$XAUTHORITY_VAR" ]; then
        logger "Found active graphical session for user $USER on display $DISPLAY_VAR with XAUTHORITY $XAUTHORITY_VAR"
        # xset dpms force on 开启显示器
        # xset s reset 和 xset s noblank 确保屏幕保护程序不会立即重新触发
        su - "$USER" -c "export DISPLAY=$DISPLAY_VAR; export XAUTHORITY=$XAUTHORITY_VAR; /usr/bin/xset dpms force on; /usr/bin/xset s reset; /usr/bin/xset s noblank"
        if [ $? -eq 0 ]; then
            logger "Successfully turned on display for user $USER on $DISPLAY_VAR."
            exit 0
        else
            logger "Failed to turn on display for user $USER on $DISPLAY_VAR."
        fi
    fi
done

logger "No graphical session found or could not turn on display."

赋予脚本执行权限：

sudo chmod +x /etc/acpi/lid_open_screen_on.sh

启动/重启 acpid 服务：

sudo systemctl enable acpid
sudo systemctl restart acpid