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platzhirsch
Asked: 2016-05-25 00:34:06 +0800 CST

Installing Ubuntu 16.04 with home encryption on a NVMe SSD

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On a Thinkpad X1 Carbon 4th Generation installing Ubuntu 16.04 with home encryption enabled I ran into the same problem as described here: After new Ubuntu 15.04 installation, startup asks for password even though no disk encryption was set up

I tried to solve it using the proposed answers, however, there is no /dev/disk/by-id only:

  • by-partlabel
  • by-partuuid
  • by-uuid

Fstab tells me the following information

# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/nvme0n1p2 during installation
UUID=a7a2ee5e-14a7-423a-b32d-7f73bc076ce6 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=F2B1-8BBE  /boot/efi       vfat    umask=0077      0       1
# swap was on /dev/nvme0n1p3 during installation
#UUID=41826f3b-d376-4e1e-9ce6-0370b1b9969d none            swap    sw              0       0

And `sudo cat /etc/cryptab' returns:

cryptswap1 UUID=41826f3b-d376-4e1e-9ce6-0370b1b9969d /dev/urandom swap,offset=1024,cipher=aes-xts-plain64

It looks to me like the configuration is correct which I why I assume it's a NVMe specific issue.

16.04

1 Answers

  1. Startup asks for a password to decrypt the swap partition specified in /etc/cryptab. Comment out the line in /etc/cryptab to disable the use of an encrypted swap. The /etc/fstab above is not configured to use /dev/mapper/ctyptswap1 anyway. NVMe should not be a contributing factor.

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