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I'm running off of a thumb drive with very average read/write speeds and automatic update checks makes the bootup far less pleasant. Since I manually update via apt there's truly no need to notify me like on a normal desktop. In older versions of Ubuntu there was an item to disable this behavior. On 12.04 this is no longer the case. would it be the 'unattended-upgrades' item in /etc/init.d? If yes, would simply removing the init script would solve my problem?

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For any future duckduckgo-ers (yeah, I'm calling it that, sue me), here's a solution:

Enter this in the terminal. It will allow displaying of 'hidden' startup services.

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

Afterwards, search 'startup applications' in the dash and launch it. It will show a host of options previously hidden. Uncheck the update notifier.

To hide everything back again, run the following:

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

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Thanks for the tip! Gnome startup time was becoming a major headache for me. – Ben Davis Apr 11 '14 at 19:41

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