Modify lemonbar script to work with Ubuntu

dotfiles/xmonad/xmonad.hs

@@ -252,9 +252,9 @@ main = do
     ,((0                        , xF86XK_Sleep    ), spawn "pm-suspend")
     ,((0                        , xF86XK_MonBrightnessUp      ), spawn "xbacklight -inc 10")
     ,((0                        , xF86XK_MonBrightnessDown    ), spawn "xbacklight -dec 10")
-    ,((0                        , xF86XK_AudioMute), spawn "amixer -q set Master toggle")
-    ,((0                        , xF86XK_AudioLowerVolume), spawn "amixer -q set Master 5%-")
-    ,((0                        , xF86XK_AudioRaiseVolume ), spawn "amixer -q set Master 5%+")
+    ,((0                        , xF86XK_AudioMute), spawn "amixer -D pulse -q set Master toggle")
+    ,((0                        , xF86XK_AudioLowerVolume), spawn "amixer -D pulse -q set Master 5%-")
+    ,((0                        , xF86XK_AudioRaiseVolume ), spawn "amixer -D pulse -q set Master 6%+")
     ]
     `additionalMouseBindings`
     [((myModMask, 6), \_ -> moveTo Next NonEmptyWS)

scripts/lemonbar/final_bar.sh

@@ -17,7 +17,11 @@ battery() {
 }
 
 volume() {
-    amixer get Master | grep -P -o '\[[0-9]+%\]'
+
+    # amixer get Master works fine on everything but
+    # Ubuntu. You need amixer -d pulse in Ubuntu.
+    amixer -D pulse get Master | grep -P -o '\[[0-9]+%\]'
+
 }
 
 cpuload() {

ubuntu/installer.sh

@@ -21,6 +21,7 @@ sudo apt-get -qq -y install xinit
 sudo apt-get -qq -y install wmname
 sudo apt-get -qq -y install libxcb-xinerama0-dev
 sudo apt-get -qq -y install libxcb-randr0-dev
+sudo apt-get -qq -y install xbacklight
 
 # Build and install lemonbar from source
 echo "Installing lemonbar from source..."