I have an old emachines, running Ubuntu 12.04. Lately when I try to put it to sleep, either by button on my keyboard or through the Shut Down menu, it will make the sound like it's going to sleep, but then instantly power up again. When it does that, the screen goes dead. Before I get a message that says "No input". No matter what I do next, I cannot bring the screen up again. I must hold the power button down on the tower to physically shut machine off.
I have installed a second HDD, and mounted it to load automatically, but I think I did this awhile ago, and the suspend issue is more recent. Thanks