I got the same issue after upgrading from 18.04 to 20.04. I followed the steps from #11 and then reversed them to fix the issue and re-enable swap encryption
1) sudo swapoff -a 2) sudo cryptsetup remove cryptswap1 3) edit `/etc/fstab`, comment the line mentioning cryptswap1 4) edit `/etc/crypttab `, comment the line mentioning cryptswap1 5) sudo update-initramfs -u 6) sudo update-grub 7) reboot 8) edit `/etc/fstab`, uncomment the line mentioning cryptswap1 9) edit `/etc/crypttab `, uncomment the line mentioning cryptswap1 10) sudo update-initramfs -u 11) sudo update-grub checking the status of the swap $ sudo cryptsetup status /dev/mapper/cryptswap1 /dev/mapper/cryptswap1 is active and is in use. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802617 Title: After upgrade to 18.10 boot fails on waiting for encrypted source device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1802617/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs