Monitor positions lost in dual display after reboot
http://bernaerts.dyndns.org/linux/74-ubuntu/309-ubuntu-dual-display-monitor-position-lost
http://www.dell.com/support/article/us/en/04/SLN298529/en
Remember window positions on multiple montiors
Restore session window positions
to get window information, run command which will wait for you to pick a window
$ xwininfo
http://blog.thewebsitepeople.org/2013/07/gnome-session-save-and-restore/