[ubuntu] Laptop doesn't always properly wake up from sleep/suspend

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http://ubuntuforums.org – Sometimes (about 1 out of every 10 times) when I put my laptop to sleep, it will come back on but the would only contain my mouse cursor (which I can move around) and nothing else, just a sort of very tiny checkboard/dots background, and it will stay that way until I manually shut off the computer and turn it back on. It happened on two seperate installations (but on the same laptop). The video card if it matters is Intel 945GM (Hardware)