I installed Ubuntu 18.04 alongside an existing Ubuntu 16.04 installation where they share swap space. I read here that this is possible, however, when I boot up Ubuntu 16.04, I get
Enter passphrase for disk cryptswap1 on none!
After I give my passphrase and log in, swap seems to work, I checked cat /proc/meminfo and it shows SwapTotal: 12182524 kB.
and cat /etc/fstab shows:
# swap was on /dev/sda3 during installation
#UUID=de7f23a9-64f0-451f-a42a-2d4cb921d804 none swap sw 0 0
/dev/mapper/cryptswap1 none swap sw 0 0
If it matters, the shutdown and restart buttons don't work anymore.
Thanks!
