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6 votes

How to install latest Netplan on Ubuntu 22.04?

netplan.io is a core component of the Ubuntu operating system. As such, it is not recommended to replace the system version with a newer release. Our policy is to backport the latest stable release ...
slangasek's user avatar
  • 5,542
1 vote

apt update failure: NO_PUBKEY E88979FB9B30ACF2

If these errors aren’t fixed, apt will have problems when installing or upgrading packages. The apt packaging system has a set of trusted keys that determine whether a package can be authenticated and ...
Mr.e.z's user avatar
  • 11
1 vote

Software center: "Prepared update not found"

Today I got the same error message as described: (...)Prepared update not found: /var/lib/PackageKit/prepared-update. And I have managed to solve it regenerating that file in the following way: $ su -...
JFCalderín's user avatar
1 vote

How to make my server email me when there are security updates?

According to: https://ubuntu.com/server/docs/package-management Configuring Unattended-Upgrade::Mail in /etc/apt/apt.conf.d/50unattended-upgrades will enable unattended-upgrades to email an ...
Andreas Huttenrauch's user avatar

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