Comment 35 for bug 1685794

Ive had this problem numerous times, and my solution works in all situations.

When running dsmeg, the error shows up as:

[CODE]
[ 6.382044] random: crng init done
[ 6.382048] random: 7 urandom warning(s) missed due to ratelimiting
[ 32.162934] EXT4-fs (sda6): mounted filesystem with ordered data mode. Opts: (null)[/CODE]

The solution is to:

First compare your fstab and blkid:

[CODE]$ blkid
/dev/sda1: UUID="C0C0-7641" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="1085d848-f8b9-45e2-a6be-087acb32a820"
/dev/sda3: LABEL="Windows" UUID="8662302C623022FB" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="de399a3e-c832-4dca-a09d-f65789425b89"
/dev/sda4: LABEL="Windows RE tools" UUID="2262513962511341" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="18feb4e1-5770-4e13-92b8-bb8ba8005536"
/dev/sda5: UUID="81a474ab-98bf-4d40-b03e-e5e647163d7e" TYPE="ext4" PARTLABEL="Arco Linux" PARTUUID="3759200f-6317-4487-8b10-3a0140c67bd5"
/dev/sda6: LABEL="rootMX17" UUID="7bae9e4d-61fa-4187-b11f-517c799f7c94" TYPE="ext4" PARTLABEL="MX Linux" PARTUUID="417c8cbd-11b7-4fe6-9b15-ac9082d74460"
/dev/sda7: UUID="d9539219-1c29-468f-bbd0-106663fdef59" TYPE="swap" PARTLABEL="Swap" PARTUUID="fefe3061-bf7b-4a26-8c20-08e209acc28e"

$ sudo nano /etc/fstab

# /etc/fstab: static file system information
#
# Created by make-fstab on Mon Nov 19 17:10:30 EST 2018

# <file system> <mount point> <type> <$

#-> /dev/sda6 label=rootMX17
UUID=7bae9e4d-61fa-4187-b11f-517c799f7c94 / ext4 d$
#-> /dev/sda1
UUID=C0C0-7641 /boot/efi vfat d$
#-> /dev/sda7
UUID=42e5a9cd-b6e1-4d57-9a3a-2ad910862579 swap swap d$[/CODE]

As you can see my swap at /dev/sda7 has a different UUID in fstab than it does in blkid. This was, in my case, caused by another linux install repartitoning the swap
and causing the UUID to change. The boot delay is caused by the system trying to find the new UUID of the swap. To fix it, just copy the UUID in blkid that doesnt match to the fstab file then save.

If after restart the boot error is still there, you need to additionally edit your initramfs.conf file.

Do this by:

$ sudo nano /etc/initramfs-tools/conf.d/resume

Then either by making a new file, or editing the current resume file, write on the first line
RESUME=UUID=<< UUID of swap>>

For example, mine looks like

RESUME=UUID=d9539219-1c29-468f-bbd0-106663fdef59

Then run the below command to update your initramfs file.

sudo update-initramfs -u

Then restart. The error will be gone