Is there an error message?
What is the line in your /etc/fstab?
What happens if you do "swapon /path/to/your/swapfile"?
No idea why this is happening though:
swapon /fedora.swap
swapon: /fedora.swap: swapon failed: Invalid argument
I am getting the following error message during boot
$ journalctl -b 0
Nov 13 11:55:46 localhost.HPNotebook systemd[1]: Activating swap /fedora.swap...
Nov 13 11:56:01 localhost.HPNotebook swapon[1018]: swapon: /fedora.swap: swapon failed: Invalid argument
Nov 13 11:55:46 localhost.HPNotebook systemd[1]: fedora.swap.swap: Swap process exited, code=exited, status=255/EXCEPTION
Nov 13 11:55:46 localhost.HPNotebook systemd[1]: fedora.swap.swap: Failed with result 'exit-code'.
Nov 13 11:55:46 localhost.HPNotebook systemd[1]: Failed to activate swap /fedora.swap.
Nov 13 11:56:01 localhost.HPNotebook swapon[1104]: swapon: /fedora.swap: swapon failed: Invalid argument
Nov 13 11:56:00 localhost.HPNotebook systemd[1]: Activating swap /fedora.swap...
Nov 13 11:56:01 localhost.HPNotebook systemd[1]: fedora.swap.swap: Swap process exited, code=exited, status=255/EXCEPTION
Nov 13 11:56:01 localhost.HPNotebook systemd[1]: fedora.swap.swap: Failed with result 'exit-code'.
Nov 13 11:56:01 localhost.HPNotebook systemd[1]: Failed to activate swap /fedora.swap.
Nov 13 11:56:02 localhost.HPNotebook systemd[1]: Activating swap /fedora.swap...
Nov 13 11:56:02 localhost.HPNotebook swapon[1122]: swapon: /fedora.swap: swapon failed: Invalid argument
Nov 13 11:56:02 localhost.HPNotebook systemd[1]: fedora.swap.swap: Swap process exited, code=exited, status=255/EXCEPTION
Nov 13 11:56:02 localhost.HPNotebook systemd[1]: fedora.swap.swap: Failed with result 'exit-code'.
Nov 13 11:56:02 localhost.HPNotebook systemd[1]: Failed to activate swap /fedora.swap.
I can confirm that swap does not work as :
$ free
total used free shared buff/cache available
Mem: 8041504 1887468 4029028 321996 2125008 5525636
Swap: 0 0 0
Free gives 0 swap, and my hibernate option is disabled.