aptitude doesn't show anything needing to be removed.

apt-get -s auto-remove shows just about every package in this range and offers to remove them 

linux-image-4.4.0-10-generic to linux-image-4.4.0-89-generic

linux-headers-4.4.0-10-generic to inux-headers-4.4.0-89-generic

In total there is 146 files (about 2GB) that apt-get would delete.

An attempt to remove with aptitude shows nothing to remove

sudo aptitude -s -oAptitude::Delete-Unused=1 install

Check with aptitude as to why they are installed and all of them gives the same answer.

aptitude why linux-image-4.4.0-15-generic

i A linux-image-4.4.0-15-generic Provides zfs-dkms

So is it safe to get rid of these files with apt-get auto-remove or will it mess up aptitude?

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