The notification is part of the housekeeping plugin. The procedures listed below can be used to disable the housekeeping plugin.
# mkdir -p ~/.config/autostart
# sed 's|[Desktop Entry]|&nHidden=true|' /etc/xdg/autostart/org.gnome.SettingsDaemon.Housekeeping.desktop > ~/.config/autostart/org.gnome.SettingsDaemon.Housekeeping.desktop
You will receive the GPU memory notification messages when the server is utilizing high GPU resources. This is normal and the notifications can be disabled by following the above procedure.
