Comment 36 for bug 1303736

I can also confirm this behaviour in Xubuntu 14.04 (on my trusty ol' Vaio TZ21 using the venerable Intel 945GM chipset). I did not have this problem for 13.10 or 13.04.

Interestingly, when I switch off Light Locker and rely on Power Manager to suspend the laptop when closing the lid, the screen is restored okay, but for some reason the Display settings window is now visible..!? Also, there is no issue when suspending via the menu.

This leads me to think that the issue is with Light Locker, and not Power Manager. (Although is Power Manager responsible for the mysterious appearance of the Display settings window on resume..??)

Glad to see this is now high priority...