The following packages were automatically installed and are no longer required:
...
Use 'apt-get autoremove' to remove them.
like in the thread linked above.
2) Systems where linux-image-<version>-{generic,server,goldfish,lowlatency} don't get suggested for autoremoval after upgrade to newer versions of linux-{generic,server,goldfish,lowlatency}/linux-image-{generic,server,goldfish,lowlatency}. Mostly because some dkms-based kernel-modules are installed like NVIDIA/AMD propietary video drivers or VirtualBox. dkms recommends virtual package linux-image provided by each and every linux-image-<version>-{generic,server,goldfish,lowlatency}. That prevents their autoremoval as long as dkms is installed and apt is configured not to autoremove recommended packages (Apt::AutoRemove::RecommendsImportant).
Link to yet another forum thread: http:// ubuntuforums. org/showthread. php?t=2256479
The problem is twofold.
1) Users not paying attention to apt-get saying:
The following packages were automatically installed and are no longer required:
...
Use 'apt-get autoremove' to remove them.
like in the thread linked above.
2) Systems where linux-image- <version> -{generic, server, goldfish, lowlatency} don't get suggested for autoremoval after upgrade to newer versions of linux-{ generic, server, goldfish, lowlatency} /linux- image-{ generic, server, goldfish, lowlatency} . Mostly because some dkms-based kernel-modules are installed like NVIDIA/AMD propietary video drivers or VirtualBox. dkms recommends virtual package linux-image provided by each and every linux-image- <version> -{generic, server, goldfish, lowlatency} . That prevents their autoremoval as long as dkms is installed and apt is configured not to autoremove recommended packages (Apt::AutoRemov e::RecommendsIm portant) .