USB volume controll not working in retropie

mitu

@jameth said in USB volume controll not working in retropie:

but nothing is happing "on boot" would you mind helping me configure triggerhappy?

As far as I recall, the triggerhappy service should be started on boot automatically, but I don't have a Pi available right now to confirm.

Run

systemctrl status triggerhappy.service

and post the output.

jameth

@mitu ah sorry, so, triggerhappy is up and running, but it's not "looking" at my config file, its not just a case of dropping in a correctly named file in an appropriate directory.

ill do some more digging and reading up. if i get it working ill be sure to post my steps.

mitu

@jameth said in USB volume controll not working in retropie:

@mitu ah sorry, so, triggerhappy is up and running, but it's not "looking" at my config file, its not just a case of dropping in a correctly named file in an appropriate directory.

See how the service is started, the systemctl command for status should tell you - may you need to add the lines to the main .conf file and not in a separate file.

jameth

@mitu

pi@retropie:~ $ systemctl status triggerhappy.service
● triggerhappy.service - triggerhappy global hotkey daemon
   Loaded: loaded (/lib/systemd/system/triggerhappy.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2022-08-17 12:11:15 BST; 1min 20s ago
 Main PID: 355 (thd)
    Tasks: 1 (limit: 414)
   CGroup: /system.slice/triggerhappy.service
           └─355 /usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --socket /run/thd.socket --user nobody --deviceglob /dev/input/event*

Aug 17 12:11:14 retropie systemd[1]: Starting triggerhappy global hotkey daemon...
Aug 17 12:11:14 retropie thd[355]: Found socket passed from systemd
Aug 17 12:11:15 retropie systemd[1]: Started triggerhappy global hotkey daemon.

so its all up and running, but I feel like my .conf isn't being "loaded in", theres a th-cmd --add command listed in the instructions, but the paths they use in the example don't make sense to me :s

mitu

Seems to be an issue with the user used by the service - see https://retropie.org.uk/forum/topic/18133/triggerhappy-daemon-thd-doesn-t-work-on-my-pi-running-retropie-help/31.

You may be able to change it by running

sudo systemctl edit triggerhappy.service

an editor session will open, you need to add the following lines:

[Service]
ExecStart=
ExecStart=/usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --socket /run/thd.socket --user pi --deviceglob /dev/input/event*

and then save and exit. Restart the service with:

sudo systemctl restart triggerhappy

and see if the commands are taking effect.

jameth

@mitu

you've done it.

it works!

I can now change the volume in a game, and this persists through power off/on.

I cannot tell how much this means to me. thank you so much for your support.

I will read up on the post you linked and post a conclusion before marking [solved]

levis78

Hi, I know this is quite an old thread but I have followed all of the steps and I am still not able to get it to work as I get a permission denied error and I can't get passed it.
This is what I get I run the command:

pi@retrocade:~$ sudo /usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --user pi --deviceglob /dev/input/event*
Executing trigger action: /usr/bin/amixer set Master 2%+
Executing trigger action: /usr/bin/amixer set Master 2%+
Home directory not accessible: Permission denied
W: [pulseaudio] core-util.c: Failed to open configuration file '/root/.config/pulse//daemon.conf': Permission denied
W: [pulseaudio] daemon-conf.c: Failed to open configuration file: Permission denied
amixer: Unable to find simple control 'Master',0

Can you please help me @mitu ?

Thanks!

levis78

@mitu for some reason, I only get the permission denied via ssh. If I execute: /usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --user pi --deviceglob /dev/input/event* from the desktop (PIXEL) locally it works perfectly, however when I boot normally into retropie, I turn the knob and nothing happens.
If I go back to the pixel desktop, run the command and launch emulationstation from the terminal it also works.
However, when I reboot and goes back again into retropie, it doesn't work anymore. From retropie I have to go back to the pixel desktop, run the command in terminal and launch emlationstation.

For background information, I tried with the triggerhappy.service and it didn't work, so I disabled it and added: nohup /usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --user pi --deviceglob /dev/input/event* & to rc.local as you suggested in your previous thread.

levis78

Hi @mitu,

While I wait for your help, I tried in to insert nohup /usr/sbin/thd --triggers /etc/triggerhappy/triggers.d/ --user pi --deviceglob /dev/input/event* & into autostart.sh, but checking ps -ef, the process is not running. I'm not sure I am doing it right.
When inserted into rc.local, checked ps -ef and it's listed there.

Thanks!

levis78

Hi @mitu, I keep digging and find strange stuff, look at this...

pi@retrocade:~$ sudo amixer scontrols
Simple mixer control 'HDMI',0
pi@retrocade:~$ amixer scontrols
Simple mixer control 'Master',0
Simple mixer control 'Capture',0