[ubuntu] Having problem with suspend & hibernate

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http://ubuntuforums.org – I hardly ever put my laptop on suspend/hibernate, so I don't know how long I've had this issue for. I'm on Ubuntu 11.10. When I turn my laptop back on again from suspend- a blank screen shows up and none of the keyboard buttons/touch-pad respond; only way to recover is holding down the power button to restart. Same goes for waking up from hibernate- but this time there's a blinking cursor on top left side of screen. I did a quick search on Google and most problems are related to suspend/hibernate options not working at all. Anyone know how to fix this problem? (Hardware)