Question

3

Ubuntu mute sound when laptop lid closed

rated 0 times [ 3] [ 0] / answers: 1 / hits: 538 / 1 Year ago, sun, may 14, 2023, 8:46:15

I find it annoying when I forget to stop videos before closing my laptop and then having sound playing when opening it in public.

I tried to add the following script to /lib/systemd/system-sleep:

#!/bin/bash



amixer -q -D pulse sset Master mute



echo 2 >> /home/user/test

The script seems to be called when suspending, as new lines are being appended to the test file (twice, which might indicate that the script also runs on resume - can someone confirm this assumption?).

Either the sound system re-enables itself automatically or something else is wrong. But the amixer command, when executed manually, works fine.

Any ideas?

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itagde

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2 Years ago

answered 1 Year ago lishrag · Accepted Answer

You can mute the sound before suspend by creating a systemd service.

First, make sure that your script is executable:
```
chmod u+x /path/to/your/script.sh
```

Then, create a systemd service that runs your script, by running:
```
sudo nano /etc/systemd/system/mute_before_sleep.service
```

In the nano window enter the following:

[Unit]

Description=Mute sound before suspend

Before=suspend.target



[Service]

ExecStart=/path/to/your/script.sh

User=<your_username>

Environment=DISPLAY=:0



[Install]

WantedBy=suspend.target

In ExecStart= enter the path to your script and in User= enter your username.

Save and close nano by pressing Ctrl+O and then Ctrl+X.

Finally, enable the service:

sudo systemctl enable mute_before_sleep.service