当笔记本电脑盖子关闭时如何禁用指纹认证(ubuntu 24.04)？

To disable fingerprint authentication when the laptop lid is closed, and re-enable when it is reopened, we will use acpid to bind to the button/lid.* event to a custom script that will stop and mask the fprintd service on lid close, and unmask and start the fprintd service on lid open.

We also check that the HDMI cable is connected by testing the contents of /sys/class/drm/card1-HDMI-A-1/status.

Follow the steps below: (ThinkPad T440 ubunu 22.04)

1. Create file /etc/acpi/laptop-lid.sh with the following contents:

   #!/bin/bash lock=$HOME/fprint-disabled if grep -Fq closed /proc/acpi/button/lid/LID/state && grep -Fxq connected /sys/class/drm/card1-HDMI-A-1/status then touch "$lock" systemctl stop fprintd systemctl mask fprintd elif [ -f "$lock" ] then systemctl unmask fprintd systemctl start fprintd rm "$lock" fi

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   #!/bin/bash   lock=$HOME/fprint-disabled   if grep -Fq closed /proc/acpi/button/lid/LID/state &&    grep -Fxq connected /sys/class/drm/card1-HDMI-A-1/status then   touch "$lock"   systemctl stop fprintd   systemctl mask fprintd elif [ -f "$lock" ] then   systemctl unmask fprintd   systemctl start fprintd   rm "$lock" fi

2. Make the file executable with

   chmod +x /etc/acpi/laptop-lid.sh

   1	chmod +x /etc/acpi/laptop-lid.sh

3. Create file /etc/acpi/events/laptop-lid with the following contents:

   event=button/lid.* action=/etc/acpi/laptop-lid.sh

   1 2	event=button/lid.* action=/etc/acpi/laptop-lid.sh

4. Restart the acpid service with:

   Shell

   sudo service acpid restart

   1	sudo service acpid restart

Now the fingerprint will be used only when the lid is open.

In order to restore the correct state of the fprintd service if you disconnect/reconnect while the laptop is off, you may call the above script from a systemd init file. The steps to do this are the following:

1. Create a file named /etc/systemd/system/laptop-lid.service with the following contents:

   [Unit] Description=Laptop Lid After=suspend.target [Service] ExecStart=/etc/acpi/laptop-lid.sh [Install] WantedBy=multi-user.target WantedBy=suspend.target

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   [Unit] Description=Laptop Lid After=suspend.target   [Service] ExecStart=/etc/acpi/laptop-lid.sh   [Install] WantedBy=multi-user.target WantedBy=suspend.target

2. Reload the systemd config files with

   sudo systemctl daemon-reload

   1	sudo systemctl daemon-reload

3. Start the service with

   sudo systemctl start laptop-lid.service

   1	sudo systemctl start laptop-lid.service

4. Enable the service so that it starts automatically on boot

   sudo systemctl enable laptop-lid.service

   1	sudo systemctl enable laptop-lid.service

   Now the status should be correct even after connecting/disconnecting when the computer is off.

   References used for creating the code in the answer:

   • How to run a script when the lid is closed?
   • Laptop doesn't hibernate when I close the lid in Ubuntu 14.04
   • Catch lid close and open events

   参考链接

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   • 当笔记本电脑盖子关闭时如何禁用指纹认证？
   • How to run a script when the lid is closed?
   • How to disable fingerprint authentication when laptop lid is closed?