I am following this below link for setting up the dual monitor.
"https://wiki.ubuntu.com/X/Config/Resolution#How to setup a dual monitor"
If I uncheck "Same image in all monitors". The system tells me to log out and back in again. When I do that, there's the same image on both monitors and the checkbox was automatically checked(The old state.)
I did not find any change in the xorg.conf file in my /etc/X11 folder too.
Can you please point me to solution for this problem?