In MATE 1.6 mate-notification-daemon has a new feature that allows users to select which monitor they want to display notifications on. The current behavior only displays notifications on the monitor which is currently active (where the pointer is). The behavior will default to as it has always been, but the user can change the settings by modifying the “use-active-monitor” and “monitor-number” keys in gsettings via dconf-editor, or they can run mate-notification-properties and edit their settings via a GUI.
Below is a screenshot of mate-notification-properties set for notifications to be displayed on an active monitor. Note that “Use Active Monitor” is selected, which disables the combobox for selecting a monitor.
Below is a screenshot of mate-notification-properties set for notifications to be displayed on a specific monitor. Note that “Use Active Monitor” is not selected, which enables the combobox for selecting the monitor to be enabled. The monitor number is set to 2. This will display on my third monitor, since counting starts at 0 instead of 1.