Re: Mute mutes speaker, but Unmute does not unmute speaker channel (XFCE4)

[Paul Dufresne <dufresnep@gmail.com>]

I will have access to the laptop only later to test these new thing I found:
https://wiki.manjaro.org/index.php?title=Volume_Stuck_on_Mute_%28XFCE_Desktop%29

From:
https://ubuntuforums.org/showthread.php?t=1796713
I may add a key in XFCE bindings looking like:
amixer -c 0 set Speaker playback 100% unmute
although the original poster was using Master not Speaker.

Might try something from:
http://unix.stackexchange.com/questions/124651/muting-and-unmuting-sound-with-mutebutton
http://unix.stackexchange.com/questions/186269/alsa-mixer-unmute-problem-on-thinkpad-laptop

For Lubuntu:
http://askubuntu.com/questions/544754/lubuntu-14-04-unmute-sound-from-keyboard-not-work/757113#757113