$ gdbus call -y -d org.freedesktop.Accounts -o /org/freedesktop/Accounts/User32011 -m org.freedesktop.DBus.Properties.Get com.ubuntu.touch.AccountsService.Sound SilentMode (<true>,)
$ gdbus call -y -d org.freedesktop .Accounts -o /org/freedeskto p/Accounts/ User32011 -m org.freedesktop .DBus.Propertie s.Get com.ubuntu. touch.AccountsS ervice. Sound SilentMode
(<true>,)