`sudo apt-get install linux-image-generic zram-config` fixes the problem.
Since installing linux-image-generic is the only nice way to make sure the correct linux-image-extra package is always installed and available, and zram is particularly useful for RAM-limited Amazon micro instances, I suggest including linux-image-generic in the cloud images by default.
I can't reproduce this bug in Ubuntu 14.04 Server, but I can reproduce it on Ubuntu 14.04 cloud: https:/ /cloud- images. ubuntu. com/trusty/ current/ trusty- server- cloudimg- amd64-disk1. img
`sudo apt-get install linux-image-generic zram-config` fixes the problem.
Since installing linux-image-generic is the only nice way to make sure the correct linux-image-extra package is always installed and available, and zram is particularly useful for RAM-limited Amazon micro instances, I suggest including linux-image-generic in the cloud images by default.