Having problem with swap. Actually, in the system monitor it shows swap is not available, and then I installed GParted partition editor.
There is a partition named /dev/sda7 and file system is linux-swap. I turned on swap from there and now everything becomes correct but when I reboot it is unable to persist the change. Again it is showing no swap in the system monitor.
Most likely the installation didn't added the swap partition to the fstab. This is easy to solve:
Open a terminal and type sudo blkid:
sudo blkid /dev/sda1: UUID="bf554a2f-a035-4c22-bca8-162def35a03c" TYPE="ext4" /dev/sda2: UUID="3962db06-3776-4f38-8ab9-eab6feeccc1d" TYPE="ext4" /dev/sdb1: UUID="AA64B45A64B42AC9" TYPE="ntfs" /dev/sdb2: UUID="F66E431C6E42D551" TYPE="ntfs" /dev/sdb3: UUID="75a0854b-8b6b-453f-8aec-2a081a1f19e3" TYPE="swap"
I've marked the swap partition. Save the UUID value.
Edit the /etc/fstab file with whatever editor you like, but for efficiency sake I would tell you two methods:
Open the file with an editor using sudo gedit or sudo vim or sudo nano, whichever you like/feel better, then type this lines at the end (be aware the I will be typing my owns since this is an example, you must change the UUID value)
UUID=75a0854b-8b6b-453f-8aec-2a081a1f19e3 none swap sw 0 0
Using a one liner. Type the following in a terminal:
UUID="75a0854b-8b6b-453f-8aec-2a081a1f19e3" sudo sh -c "echo $UUID 'none swap sw 0 0' >> /etc/fstab
Now reboot your system, then type free:
total used free shared buffers cached Mem: 1533744 1455700 78044 0 89548 690756 -/+ buffers/cache: 675396 858348 Swap: 1546232 0 1546232
As you can see, the total swap is not 0. Same should happen with the system monitor
