Volume buttons not working on lubuntu 16.04 fresh install

Question

When I press the volume keys (F2 for -, F3 for + and F1 for mute with no need to press Fn)
I've tried the instructions from here to run:

gsettings reset org.gnome.settings-daemon.plugins.media-keys volume-up
gsettings reset org.gnome.settings-daemon.plugins.media-keys volume-down
gsettings reset org.gnome.settings-daemon.plugins.media-keys volume-mute

but It didn't work for me.

Is there an alternate way to fix this?

Answer 1

Sorry for digging out an old post, but I have found a solution In my case it was an issue with actions assigned to

XF86AudioLowerVolume
XF86AudioRaiseVolume

in the file

~/.config/openbox/lubuntu-rc.xml

Try to find a command that will work for lowering/raising volume from the terminal, in my case it is

amixer -D pulse sset Master 5%-
amixer -D pulse sset Master 5%+

so my entries in the file look like this (I left the default lubuntu entries commented out)

<keybind key="XF86AudioRaiseVolume">
<action name="Execute">
<!-- <command>amixer -q sset Master 3%+ unmute</command> -->
<command>amixer -D pulse sset Master 5%+</command>
</action>
</keybind>
<keybind key="XF86AudioLowerVolume">
<action name="Execute">
<!--     <command>amixer -q sset Master 3%- unmute</command> -->
<command>amixer -D pulse sset Master 5%-</command>
</action>
</keybind>

This whole section is inside the element (as per https://wiki.lxde.org/en/LXDE:Questions#How_do_I_make_my_special_keyboard_buttons_.28mute.2C_volume.2C_screen_brightness_....29_work.3F )

You may need to logout/login or restart after making changes to the file.

Hope this helps.

Answer 2

In my case, I checked out the Sound settings and saw in the Output section that I had turned on the option 'Allow louder than 100%'. Turning it off resolved the problem for me.