I have an Emachines W6409 desktop. I just intalled Ubuntu 12.04 the other day and everything seemed to be working fine. I put it in suspend mode and left for the night and when I came back the following day, I could not get it to wake from sleep, so I held down the power button on the tower to turn off computer and now it doesn't even wake my monitor when I start the computer. The monitor turns on if you press it's power button, but doesn't display anything from the pc and eventually times out and goes back to sleep. Please help!!