I can only think of that you deleted the meta package on some servers, hence there are only new kernel packages available, but no meta package to pull them in.
** Changed in: apt (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1753532 Title: apt-get update doesn't get new packages Status in apt package in Ubuntu: Incomplete Bug description: apt-get update and upgrade do not upgrade the system --Steps to Reproduce--- apt-get update and apt-get upgrade. It shows nothing to upgrade. But the kernel level is in an old version. New kernel packages are not shown in apt-cache. Somehow, the new packages are not being got from repo server when do apt-get update. Executed on 16.04.3 Btw, not all the Ubuntu servers have that issues. I crossed check the sources.list among the servers, there is no difference. So don't know what caused some of them cannot get any update from ubuntu repo. However, I can install individual packages via apt-get install command. There is not any error during the apt-get update && apt-get upgrade. It showed nothing to upgrade. Hit:1 http://ports.ubuntu.com/ubuntu-ports xenial InRelease Hit:2 http://ports.ubuntu.com/ubuntu-ports xenial-updates InRelease Hit:3 http://ports.ubuntu.com/ubuntu-ports xenial-backports InRelease Hit:4 http://ports.ubuntu.com/ubuntu-ports xenial-security InRelease Reading package lists... Done Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. The servers were able to manually upgrade for a long time. But all the sudden, they are not upgradable. It looks it can not retrieve new kernel level packages during the apt-get update. The highest kernel level can be installed is 4.4.0-97.. not more higher.. HWS: I mirrored this problem description, to be able to get support for getting this fixed. Even it seems to be an environment problem. But direct Q&A will probably help.... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1753532/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp