Ubuntu 21.10 does not upgrade without RESUME variable
for apt-upgrade -y the upgrade will ask to fill the UUID for the RESUME variable. it needs to be declared by user default.
RESUME variable in /etc/initramfs-tools/conf.d/resume
user can do it by :
printf "RESUME=UUID=$(blkid | awk -F\" '/swap/ {print $2}')\n" | sudo tee /etc/initramfs-tools/conf.d/resume
can you make it default like other versions?