This is what my gparted looks like
When i formatted my computer before installing Ubuntu, I set up the partitions properly (or so i thought) and had the last "unknown" area as a linux-swap and turned it on. I've installed it and it went smoothly. Then I booted up and saw this. I've booted to a live USB drive and formatted that unknown area, and successfully set up a linux-swap and turned it on twice, and both times it reverted back to this in gparted.
This is what I get when I run sudo blkid
/dev/sda1: UUID="2152-B1BC" TYPE="vfat"
/dev/sda2: UUID="593f856a-b25e-4f25-ac48-3c5b00dcf7d9" TYPE="ext4"
/dev/sda3: UUID="78b1b1a0-b721-4f52-8b17-b577bd573225" TYPE="ext4"
/dev/mapper/cryptswap1: UUID="9b33ee92-f21f-4e07-b080-95ef59a62d1d" TYPE="swap"
This is the result of running cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda2 during installation
UUID=593f856a-b25e-4f25-ac48-3c5b00dcf7d9 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=2152-B1BC /boot/efi vfat defaults 0 1
# /home was on /dev/sda3 during installation
UUID=78b1b1a0-b721-4f52-8b17-b577bd573225 /home ext4 defaults 0 2
# swap was on /dev/sda4 during installation
#UUID=7c51619a-5ead-4e78-af2d-2900f3b4046c none swap sw 0 0
/dev/mapper/cryptswap1 none swap sw 0 0
this is what i get when i run free -h
total used free shared buffers cached
Mem: 5.0G 4.8G 126M 0B 11M 3.6G -/+ buffers/cache: 1.2G 3.8G Swap: 18G 200M 18G
(sorry for making you edit this post again i can't figure out the formatting here yet)
free -h
.