|I had a problem where my computer wouldn't sleep on its own like it was supposed to, and if I forced it to sleep or hibernate it would wake itself up again after a few minutes. I've since discovered it is my USB printer causing the problem; turning it off allows the computer to stay asleep.|
However I just wondered why the printer would do this? I don't think it is related to the OS because I've since upgraded from XP Pro to Windows 7 and the same thing happens.
It just seems like the printer is constantly trying to send information to the computer even when it is not in use. It is a Lexmark; I'm never buying one of these again because I've had nothing but trouble with it (you get what you pay for I guess), however I just cannot see any possible reason why the printer would A) prevent the computer for sleeping and B) wake the computer up if it is asleep.
I mean surly the printer should only need to communicate with the comp if I'm actually using it, not while it is sat there idling and doing absolutely nothing.