The fix for "Gave up waiting for suspend/resume device" on Debian 12

Steps to fix mismatch swap UUID.md

For some reason, when the swap partition UUID changes, Debian takes much longer time to boot due to swap partition UUID mismatch in both /etc/fstab and /etc/initramfs-tools/conf.d/resume. This can happen when swap partition gets reformatted and assigned with new UUID.

Here is how to fix it:

1. Get into root:

$ su
$ export PATH=/usr/sbin:/sbin:$PATH

2. Get swap partition UUID:

$ blkid grep swap
/dev/sdaX UUID="..." TYPE="swap" PARTUUID="..."

3. Compare the swap parition UUID above with the one in /etc/fstab:

$ cat /etc/fstab | grep swap
UUID=... none swap sw 0 0

4. If swap partition UUID is not the same, then fix it.
5. Compare the swap partition UUID with the one in /etc/initramfs-tools/conf.d/resume:

$ cat /etc/initramfs-tools/conf.d/resume
RESUME=UUID=...

6. If swap parition UUID is not the same, then fix it. Otherwise, skip to (8).
7. Update initramfs:

update-initramfs -u

8. Done, reboot machine. By now, Debian should be able to boot normally.