[GLLUG] Sound off resume resume from suspend.

[James Dutton]

On ubuntu put an extra script in /lib/systemd/system-sleep

Look at other files already in there for a guide as to how to write them.
e.g. create a new file in /lib/systemd/system-sleep:

#!/bin/sh

PATH=/sbin:/usr/sbin:/bin:/usr/bin

case "$1" in
    pre)    whoami >>/tmp/tt3
        exit 0
        ;;
    post)    whoami >>/tmp/tt3
        exit 0
        ;;
     *)    exit 1
        ;;
esac



The problem with doing something with amixer is that when you run
amixer, you need to be your user, but the script is run as root so it
won't work.
You could run in under sudo for your user name, but it will not work
if you are logged in as any other user at suspend time.



On Mon, 5 Feb 2024 at 22:30, Carles Pina i Estany via GLLUG
<gllug at mailman.lug.org.uk> wrote:
>
>
> Hi,
>
> On 05 Feb 2024 at 17:53:16, Andrew Black via GLLUG wrote:
> > I used to have a script on my WIndoze PC that switched the speaker to 0 on
> > resume from suspend or hibernate.   It saved me embarrassment of playing
> > bombastic organ music in a quiet library!
> >
> > I wonder if I could do the same of Ubuntu.    It is in two parts
> >
> >    - Detecting when you suspend or resume (I am not bothered which!)
> >    - Changing the volume level to 0 (or close to 0).
>
>
> I use something similar (with desktop shortcuts) to change the volume
> and toggle mute or not in Debian.
>
> This sets it to 0, to me (I think that depends of the audio
> configuration will work or not for you):
>
> amixer set Master 0%
>
> Regarding the suspend and resume: I know that there are scripts that are
> executed, but I don't know which ones right now (and might be
> different on Debian or Ubuntu). Hopefully someone else will know!
>
> Cheers,
>
> --
> Carles Pina i Estany
> https://carles.pina.cat
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