ubuntu s4 mode

 https://ubuntuhandbook.org/index.php/2021/08/enable-hibernate-ubuntu-21-10/

/etc/default/grub

RESUME=UUID=d52629c8-4213-4427-a025-3afdeed2b5d2

/etc/initramfs-tools/conf.d/resume

RESUME=UUID=d52629c8-4213-4427-a025-3afdeed2b5d2

24.04改為

GRUB_CMDLINE_LINUX_DEFAULT="splash debug loglevel=7 resume=/dev/sda4"

sda4指的是swap的partition.