Cannot enable hybernation due to missing swap UUID

user3161330

10/23/22, 3:16 PM

I have tried to follow the instructions mentioned here in order to activate hybernation on my Ubuntu 20.04.2 LTS system.

However, I could not do it because in my fstab file the swap line does not provide a uuid as you can see below:

  GNU nano 4.8                       /etc/fstab                                 
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/mapper/vgubuntu-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/nvme0n1p2 during installation
UUID=86a29cef-7076-4d45-9d5c-08065fd3e3fb /boot           ext4    defaults     >
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=6B80-CFF9  /boot/efi       vfat    umask=0077      0       1
/dev/mapper/vgubuntu-swap_1 none            swap    sw              0       0

  GNU nano 4.8                       /etc/fstab                                 
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/mapper/vgubuntu-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/nvme0n1p2 during installation
UUID=86a29cef-7076-4d45-9d5c-08065fd3e3fb /boot           ext4    defaults     >
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=6B80-CFF9  /boot/efi       vfat    umask=0077      0       1
/dev/mapper/vgubuntu-swap_1 none            swap    sw              0       0

Does anybody have recommendations?

0 + 3

grub2

swap

paladin

10/23/22, 4:21 PM

Try instead `GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/mapper/vgubuntu-swap_1"` PS I'm not really sure if this works, please test it.

user3161330

10/27/22, 9:33 PM

@paladin thank you for the suggestion but it did not work unfortunately. Any other idea?

paladin

10/27/22, 9:48 PM

You might use a swap partition instead of a swap file, this will have a UUID.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Cannot enable hybernation due to missing swap UUID

TH: ไม่สามารถเปิดใช้งานการไฮเบอร์เนตได้เนื่องจาก UUID สว็อปหายไป

RO: Nu se poate activa hibernarea din cauza lipsei UUID-ului de schimb

RU: Невозможно включить гибернацию из-за отсутствия UUID подкачки

VI: Không thể kích hoạt chế độ ngủ đông do thiếu UUID trao đổi

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