Cfrgtkky

Open up the config file that runs the update-manager part after apt

nano /etc/apt/apt.conf.d/99update-notifier

Add '#' infront of the line making it something similar to:

#DPkg::Post-Invoke {"if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; if [ -e /var/lib/update-notifier/updates-available ]; then echo > /var/lib/update-notifier/updates-available; fi "; };

Done.

This worked for me in stopping the update manager popping up after every apt update while still allowing me to run update-manager manually if i wanted to.

Just turning off notification of updates will not be enough. There are several background jobs that run apt-get update (including a nightly cron job if I remember right).

To stop the pop-up run update-manager

Then in settings, set Update automaticly to 'Never' and Notify of new version to 'Never'

I suggest leave security at immediately and, setting "others" to every two weeks.

You also need to make sure your not running apt-get update anywhere else. This can happen when you install software, run update-manager, or in a cron job.

If that doesn't work for you:

You can do this by

editing /etc/apt/apt.conf.d/10periodic and changeing

APT::Periodic::Update-Package-Lists "1";

to

APT::Periodic::Update-Package-Lists "0";

Last Resort

You can also do apt-get remove update-manager to remove the feature all together.

It is good that Ubuntu automatically checks for updates, it is not good that it pops-up windows against your will. You can have less invasive notifications via the gnome bar or from terminal based applications (like Byobu).

To disable the update-notifier while leaving the update-manager automatically checking for updates, run the following from a terminal:

1. 
   sudo apt-get install gconf-editor in case you don't have it already installed


2. 
   sudo gconf-editor mind the sudo attribute


3. search for app->update-notifier and un-tick the "auto-launch" option


4. close the window


5. 
   gconf-editor this time as a user (i.e. without sudo)


6. search again for app->update-notifier and change the "regular_auto_launch_interval" to the number of days you want it to wait before popping-up (0 is immediately, 1 one day, 99999999 basically never again)

You've set it to never check for updates, but you'll find the update manager is opening because it already knows there are updates to be done. Do the updates that it has and it won't bother you again until you update the file lists.

It's a bit like terminal will tell you when there are updates in the apt list that have been put there with 'apt-get update', and will keep on reminding you until you install them.

sudo killall update-notifier

sudo mv /usr/bin/update-notifier /usr/bin/update-notifier.real

echo -e '#!/bin/bashnwhile :; do /bin/sleep 86400; done' | sudo tee /usr/bin/update-notifier

sudo chmod 755 /usr/bin/update-notifier

Brutal, but effective.

Ubuntu 16.04 running Gnome Session

You can fix that by removing "Update Notifier" from the "Startup Applications."

First allow it to display in the list of your startup applications.

sudo sed --in-place 's/NoDisplay=true/NoDisplay=false/g' /etc/xdg/autostart/update-notifier.desktop

Then uncheck the item here:

gnome-session-properties

This way you don't need to make any changes in your auto-update configuration (but you can if you want to), rename system files nor remove packages.

I do not like automatic updates so I want to disable them always.
I use Ubuntu 14.04 with Gnome desktop environment. I do not know if gsettings is available in Unity.

On slow internet connections disabling apt-xapian-index prevents automatic package downloading which will take all your bandwith (I have 256 kb/s mobile sometimes).

sudo chmod a-x /etc/cron.daily/update-notifier-common 

sudo chmod a-x /etc/cron.weekly/apt-xapian-index 

sudo chmod a-x /etc/cron.weekly/update-notifier-common 



gsettings set com.ubuntu.update-notifier regular-auto-launch-interval 3650

gsettings set com.ubuntu.update-manager launch-time 1900000000

Seemed to do the trick for me. 3650 means days...
1900000000 tells that the update-manager is last run on year 2030 :)

Update: On Ubuntu 16.04 it seems that you are able to disable automatic updates with following commands and by editing two files:

sudo mv /etc/xdg/autostart/update-notifier.desktop /etc/xdg/autostart/update-notifier.desktop.old 

sudo mv /etc/xdg/autostart/gnome-software-service.desktop /etc/xdg/autostart/gnome-software-service.desktop.old

If extension is other than .desktop these commands won't be run on system start.

Edit /etc/apt/apt.conf.d/10periodic

APT::Periodic::Update-Package-Lists "0";

APT::Periodic::Download-Upgradeable-Packages "0";

APT::Periodic::AutocleanInterval "0";

Edit /etc/apt/apt.conf.d/20auto-upgrades

APT::Periodic::Update-Package-Lists "0";

APT::Periodic::Unattended-Upgrade "0";

If you have started Update manager even ONCE these files will contain four lines:

APT::Periodic::Update-Package-Lists "0";

APT::Periodic::Download-Upgradeable-Packages "0";

APT::Periodic::AutocleanInterval "0";

APT::Periodic::Unattended-Upgrade "0";

Just change all values to "0"

I am not sure why anyone has not tried this.

I simply disable all checkpoints under "ubuntu software" and "other software" in "software and updates", besides setting options under "automatic updates" and "check for newer version" to "never". This avoids any check up as there is no link, hence no pop-up.

My main pain point was that these updates eat lot of internet data. For people on move, 3G/4G data is expensive and we'd like to optimize its usage. Hope ubuntu understands this concern and provides simpler options to disable updates completely as per user requirements.

I had a similar issue. Executing,

apt-get purge update-notifer*

resolved issue!
Ubuntu 12.04.5 LTS

Edit /etc/update-manager/release-upgrades and set:

Prompt=never
change this with your favorite editor).

Never use update-manager with -d this checks whether the next release is available or not.

For Ubuntu 16.04, and possibly other releases as well:

sudo chmod 000 /usr/bin/update-manager

sudo chmod 000 /usr/bin/update-notifier

Then reboot. (Alternatively, it is possible that merely logging out and back in is sufficient.)

You can verify that update-manager is not running by examining the output of:

ps auxwww | grep update

(Aside: Other posters have suggested sudo apt-get purge update-notifer*. However, I prefer not to remove packages that might be tangled up in the various desktop meta-packages.)

To disable the anoying popup after 12.04 had no longer support I did:
cd to /etc/apt/apt.conf.d

and edited: 15update-stamp

commented de the original line and added a "fixed" line. My file had:

APT::Update::Post-Invoke-Success {"touch /var/lib/apt/periodic/update-success-stamp 2>/dev/null || true";};

and now I substituted it with:

APT::Update::Post-Invoke-Success {"touch /var/lib/apt/periodic/update-success-stamp 2>true || true";};

Now every time the update is run it is sort of as: "updates where searched for, not found (your system was no longer supported), but it was attempted, everything is as ok as it will get"