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In i3 volume control is not handled by fn Right or Left arrow key. I currently have to put the following in a terminal: amixer -D pulse sset Master 5%+(or-) Which i do by way of an alias vup/vdown. Is there a way to globally bind a command say f1/f2 to an amixer command like the above code snippet? It would have to work even if I was currently in a browser or other non terminal window.

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I found an answer for fixing the audio problem at How to manage audio with i3?

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If you have media keys, then paste this at the end of your i3 config file found at /etc/i3/config and restart i3 with mod+Shift+R

# Pulse Audio controls
bindsym XF86AudioRaiseVolume exec --no-startup-id pactl set-sink-volume 0 
+5% #increase sound volume
bindsym XF86AudioLowerVolume exec --no-startup-id pactl set-sink-volume 0 
-5% #decrease sound volume
bindsym XF86AudioMute exec --no-startup-id pactl set-sink-mute 0 toggle # 
mute sound

# Sreen brightness controls
bindsym XF86MonBrightnessUp exec xbacklight -inc 20 # increase screen 
brightness
bindsym XF86MonBrightnessDown exec xbacklight -dec 20 # decrease screen 
brightness

# Touchpad controls
bindsym XF86TouchpadToggle exec /some/path/toggletouchpad.sh # toggle 
touchpad

# Media player controls
bindsym XF86AudioPlay exec playerctl play
bindsym XF86AudioPause exec playerctl pause
bindsym XF86AudioNext exec playerctl next
bindsym XF86AudioPrev exec playerctl previous 

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