how to run xrandr command at startup

[CS DBA]

Hi all;

I want to run an xrandr command at startup.

I Tried these solutions with no luck:

1) added command it to /etc/rc.d/rc.local (as a script with #!/bin/bash 
as the first line)
     created a soft link from /etc/rc.d/rc.local to /etc/rc.local
     systemctl start rc-local.service

2) added command to /etc/kde/kdm/Xsetup
     chmod a+x /etc/kde/kdm/Xsetup


Neither of the above solutions work


I'm running Fedora 21, KDE spin (64bit)

Thanks in advance for any help...