O arquivo está localizado em /etc/initramfs-tools/conf.d/resume
.
Em terminal
...
sudo blkid | grep -i swap # note the UUID of the swap partition
sudo -H gedit /etc/initramfs-tools/conf.d/resume # edit the file
RESUME = UUID = 071f8b0e-8e16-4f4d-90ff-a4ae9cc56e2b
* edit with correct UUID of swap partition from blkid command
sudo update-initramfs -u # update the /boot/initrd.img file