I find it a bit annoying that Ubuntu (in my case: 14.04 LTS) wants to restart quite often after updates, and therefore I want to supress this updates and only start them manually. Since I use the computer regularly, I want normal updates to take place as usual. Is there a way to do so?
As Why does Ubuntu need to reboot so often? suggests, kernel package updates and some other (unkown) updates force a reboot. Is it possible to disable (all) those updates in the update-manager?
How can I stop the Software Updater from nagging me to restart? suggests disabling the update-manager at all, but since I want to get regular updates, this is not suitable for me. The other suggested way of this post is to supress the warnings via dconf editor. I assume that the updates are there for some reason and therefore should not be disabled.
So all in all - is there a way to prevent updates that force restarts (and still allow other updates), or to ad-hoc install all updates without restart in Ubuntu? KSplice (http://www.ksplice.com/) seems to have the feature with the ad-hoc installation.
Only using the update-manager is not enough: For example the current update saying it upgrades:
firefox firefox-locale-de firefox-locale-en libgnutls-openssl27 libgnutls26 libgnutls26:i386
caused an UI popup telling me that a computer restart is required. No kernel updates was included. Is there some way of preventing this required reboot? What happens if I refuse to reboot, may I have security problems (because of the old OpenSSL-version)?