My machine is a Dell Latitude E6510 with Ubuntu 14.04 installed.
Whenever I Suspend, either by clicking the suspend button from the system menu or by closing the laptop, and then resume, the log-in screen appears.
For about 10 seconds, everything is frozen except mouse movement. I can move the mouse but I can't click on anything, can't enter text, and the mouse doesn't change to acknowledge hovering over particular elements like a text input for instance.
Eventually, control is restored to me, then when I enter my password and log in, the screen displays just my desktop background image, the message 'System problem encountered' sometimes flashes briefly, and then disappears. Then, the screen remains just my desktop background image and I cannot do anything but restart my machine.
Any help would be appreciated! I will provide more specs if anybody believes they are relevant to this issue.