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Suppressing Update Notifier messages in Ubuntu GNOME 14.04

Published on 18th July 2014 Estimated Reading Time: 2 minutes

Even though I use only the command line for system updates, I still received system restart messages after kernel updates. Though these can be helpful, I prefer to restart my system on my own schedule, especially when running processes I don't want to interrupt.

In Ubuntu GNOME 13.10 and earlier, these messages didn't appear. I wanted to return to a notification-free experience. The Update Notifier application causes these messages, but removing it significantly impacts the system, making that approach impractical.

The application starts automatically at boot but doesn't appear in Startup Applications Preferences (launched via gnome-session-properties). This is because the NoDisplay flag in its autostart shortcut located in /etc/xdg/autostart/ is set to true. To make it visible, you need to set this flag to false.

The following command will reveal all hidden startup applications (note that the command is split across two lines for display purposes, and you may need to adjust quotes when executing it):

sudo sed -i 's/NoDisplay=true/NoDisplay=false/g'
/etc/xdg/autostart/*.desktop

The sed command changes NoDisplay=true to NoDisplay=false in all desktop files, revealing hidden entries in Startup Applications Preferences. This allows you to disable the Update Notifier. While deleting the desktop file would be more permanent, this solution works well as it stops restart notifications. Since I regularly update my system and shut down daily, updates are applied automatically, and everything functions properly.

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