What do you have with cat /proc/cmdline and cat /etc/kernel/cmdline?
BTW, according to the image above you seem to be running Fedora 20 which has been EOL for about 9 years.
Please also post uname -a so we can see the actual fedora version and kernel in use. If actually using fedora 20 then it is almost impossible for us to support that old a version of fedora.