I am new to linux and I tried to set up a keyboard shortcut that would rotate my second screen, however, when I use the command nothing happens. Is there something else I have to configure to ensure my custom keyboard shortcuts work? The built in commands work, just not the custom ones I created. I am using Ubuntu 14.04. I followed the directions I found on this post and wrote the following in the command line.
xrandr --output HDMI1 --rotate left
I used Ctrl+← as the shortcut.
When I type that command in the terminal, everything works great. Just not with the keyboard shortcut.