Update: Updated scripts, changed HDMI name.

scripts/brightness_hdmi

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+dir_icons="/usr/local/bin/icons"
+MON="HDMI-1"    # Discover monitor name with: xrandr | grep " connected"
+STEP=10          # Step Up/Down brightnes by: 5 = ".05", 10 = ".10", etc.
+
+CurrBright=$( xrandr --verbose --current | grep ^"$MON" -A5 | tail -n1 )
+CurrBright="${CurrBright##* }"  # Get brightness level with decimal place
+
+Left=${CurrBright%%"."*}        # Extract left of decimal point
+Right=${CurrBright#*"."}        # Extract right of decimal point
+
+MathBright="0"
+[[ "$Left" != 0 && "$STEP" -lt 10 ]] && STEP=10     # > 1.0, only .1 works
+[[ "$Left" != 0 ]] && MathBright="$Left"00          # 1.0 becomes "100"
+[[ "${#Right}" -eq 1 ]] && Right="$Right"0          # 0.5 becomes "50"
+MathBright=$(( MathBright + Right ))
+
+dunstify -a "Brightness" \
+    "Brightness" \
+    "Current brightness is $MathBright%" \
+    -r 100 \
+    -i "$dir_icons"/sun.svg
+
+[[ "$1" == "up" || "$1" == "+" ]] && MathBright=$(( MathBright + STEP ))
+[[ "$1" == "down" || "$1" == "-" ]] && MathBright=$(( MathBright - STEP ))
+[[ "${MathBright:0:1}" == "-" ]] && MathBright=0    # Negative not allowed
+[[ "$MathBright" -gt 150  ]] && MathBright=150      # Can't go over 1.50
+
+if [[ "${#MathBright}" -eq 3 ]] ; then
+    MathBright="$MathBright"000         # Pad with lots of zeros
+    CurrBright="${MathBright:0:1}.${MathBright:1:2}"
+else
+    MathBright="$MathBright"000         # Pad with lots of zeros
+    CurrBright=".${MathBright:0:2}"
+fi
+
+xrandr --output "$MON" --brightness "$CurrBright"   # Set new brightness

scripts/mute

@@ -2,8 +2,7 @@
 
 dir="/usr/local/bin/icons"
 
-cur_vol=$(pactl list sinks | grep '^[[:space:]]Volume:' | \
-    head -n $(( SINK + 1 )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,')
+cur_vol=$(awk -F"[][]" '/Left:/ { print $2 }' <(amixer sget Master) | sed 's/%//g')
 MUTE=$(pacmd list-sinks | awk '/muted/ { print $2 }' | head -1)
 affirmative="yes"
 negative="no"

scripts/volume

@@ -2,8 +2,7 @@
 
 dir_icons="/usr/local/bin/icons"
 
-cur_vol=$(pactl list sinks | grep '^[[:space:]]Volume:' | \
-    head -n $(( "$SINK" + 1 )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,')
+cur_vol=$(awk -F"[][]" '/Left:/ { print $2 }' <(amixer sget Master) | sed 's/%//g')
 
 vol_quiet=33
 vol_loud=66