Ubuntu error: A job is running for dev-mapper-cryptswap1.device

This is caused by the system looking for an encrypted swap partition, however most likely you have not created one. Which is normal, now when a lot of RAM is available, and a swap partition is not necessary. This is all due to a misconfiguration entry in the fstab, which tells the system to try and mount the said (non existing) partition.

The solution is to remove or comment out the “cryptswap” entries from /etc/fstab and /etc/crypttab.

This can be done easily by editing the above mentioned files as commenting out the lines that say cryptswap by placing a “#” in front of the matching lines.

The result is shown below in the image, where the lines referring to the cryptswap partition are already commented out.