I installed Lubuntu(14.04.2 LTS) in my Lenovo Z510.
The multimedia hot keys in my laptop is independent. Means to use multimedia keys I don't have to press Fn
key. The brightness hot keys are working perfectly but only the volume buttons(mute, volume up, volume down) not working.
I tried
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 still nothing happens.
Best Answer
on 17.04, default volume commands won't work, because on ~/.config/openbox/lubuntu-rc.xml the amixer command is wrong. In order to fix it, find "XF86Audio" key tags
change amixer -q option to "amixer -D pulse". the file must be like the following: