Printer wakes computer?

March 22, 2010 at 01:30:32
Specs: Windows XP Pro
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.

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March 22, 2010 at 03:21:14
It may be a setting in the BIOS - 'wake on USB' or similar.

"I've always been mad, I know I've been mad, like the most of us..."

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