How can I set presentation mode (DE: MATE)?

    ninos In MATE Desktop Environment, there isn't a built-in "Presentation Mode" like in some other desktop environments (e.g., GNOME or KDE), but you can simulate it by:

    1. Preventing the screen from dimming or locking

    You can temporarily disable screen blanking and locking while you're presenting.

    Option A: Via GUI

    1. Open SystemControl CenterPower Management.
    2. Under the On AC Power tab:
      • Set Put display to sleep when inactive to Never.
      • Set Put computer to sleep when inactive to Never.
    3. Go to Screensaver settings:
      • Set Activate screensaver to OFF.
      • Uncheck Lock screen when screensaver is active.

    Option B: Via Terminal (temporary session-only)

    gsettings set org.mate.power-manager sleep-display-ac 0
    gsettings set org.mate.power-manager sleep-computer-ac 0
    gsettings set org.mate.screensaver lock-enabled false
    gsettings set org.mate.screensaver idle-activation-enabled false

    To restore later:

    gsettings reset org.mate.power-manager sleep-display-ac
    gsettings reset org.mate.power-manager sleep-computer-ac
    gsettings reset org.mate.screensaver lock-enabled
    gsettings reset org.mate.screensaver idle-activation-enabled
    1. Enable "Do Not Disturb" Mode

    If you're using notifications, you may want to pause them during the presentation.

    If mate-notification-daemon supports it (may vary by distro), try:

    dconf write /org/mate/notification-daemon/do-not-disturb true

    Optional: Create a Presentation Mode Script

    You can make a small script like this:

    #!/bin/sh
    # Enable presentation mode
    gsettings set org.mate.power-manager sleep-display-ac 0
    gsettings set org.mate.power-manager sleep-computer-ac 0
    gsettings set org.mate.screensaver lock-enabled false
    gsettings set org.mate.screensaver idle-activation-enabled false
    dconf write /org/mate/notification-daemon/do-not-disturb true

    Save as presentation_mode.sh, make it executable:

    chmod +x presentation_mode.sh

    Then run it before starting your talk.

    Regarding presentation mode...
    If the presentation is less than 2 hours you can for that event:
    Open Control Center > Look and Feel > Screensaver
    Slide the slider all the way over to the right which sets it to 2 hours.

    If you never wish the screen to blank we can add a startup command to Ghost.
    Doing this means you can switch the feature on and off as desired:
    Open Control Center > Personal > Startup Applications > Add
    Give the new item a name
    Stop Screen Blanking
    Then add the command string
    xset -dpms s off s noblank s 0 0 s noexpose
    to the command line then save it and restart your PC.