I had the same problem. Therefore I included the System Shortcut in my AppleScripts:
When starting my AppleScripts a popup window appears in which I can enter the duration of the DND:
DND only:
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
end tell
set theTime to text returned of ¬
( display dialog (“How long should it remain activated?”) ¬
with title (“Do not Disturb”) ¬
default answer (“”) ¬
buttons {“Cancel”, “Start”} ¬
default button 2)
delay theTime * 60
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
delay 0.4
display notification “Is deactivated” with title “Do not Disturb” sound name “Tink”
end tell
DND & Sound:
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
set volume with output muted – mute volume
end tell
set theTime to text returned of ¬
( display dialog (“How long should it remain activated?”) ¬
with title (“Do not Disturb”) ¬
default answer (“”) ¬
buttons {“Cancel”, “Start”} ¬
default button 2)
delay theTime * 60
set volume without output muted – unmute volume
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
delay 0.4
display notification “Is deactivated” with title “Do not Disturb” sound name “Tink”
end tell
DND, Sound & Items:
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
set volume with output muted – mute volume
do shell script "defaults write com.apple.finder " & ¬
"CreateDesktop -bool false; " & ¬
“killall Finder” – hide desktop icons
end tell
set theTime to text returned of ¬
( display dialog (“How long should it remain activated?”) ¬
with title (“Do not Disturb”) ¬
default answer (“”) ¬
buttons {“Cancel”, “Start”} ¬
default button 2)
delay theTime * 60
tell application “System Events”
keystroke “d” using { command down , option down , control down , shift down }
set volume without output muted – unmute volume
do shell script "defaults write com.apple.finder " & ¬
"CreateDesktop -bool true; " & ¬
“killall Finder” – unhide desktop icons
delay 0.8
display notification “Is deactivated” with title “Do not Disturb” sound name “Tink”
end tell