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Like the title says the Update Manager doesn't show up automatically,like it used to do, when there are available updates.To be more specific ,the only way I can update my packages/installed programs is either via Terminal or run open manually the Update Manager.Does anybody know how can I fix that?

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up vote 2 down vote accepted

Follow this tutorial to display hidden startup applications. Then head to Startup Applications

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and look whether Update Notifier is checked:

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Activate the entry, if it isn't.

Edit: If the entry doesn't exist at all click add and enter the following:

enter image description here

If that doesn't work, head to /etc/cron.daily and make sure that there is a file named update-notifier-common.

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It seems the Daily checking is activated from the Update Manager Settings.Actually I followed the process on the tutorial and the hidden startup programs/services were revealed,but it seems that I do not have an entry with the name Update Notifier.Do you know how can I add it? – und3rd06012 Sep 20 '12 at 20:41
I edited my answer with a way to add the entry. Does it work now? – Glutanimate Sep 20 '12 at 20:55
Thanks very much for your help. – und3rd06012 Sep 20 '12 at 20:56
You are very welcome. don't hesitate to ask again if there's something wrong :-) – Glutanimate Sep 20 '12 at 20:58

It may help you:

  • Open the "Update Manager" application.
  • Click on "Settings"
  • On "Updates" tab click on "Automatically check for updates" and select Daily.
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