Can't get Macbook Pro to sleep with external display connected

I just got a brand new (to me) used uMBP (2.53ghz/9400/9600GT 512mb). I have a Dell Ultrasharp 2005fpw LCD display. The Dell has a cable connected to it with DVI on the monitor side and HDMI on the other end. I'm using a mini displayport to HDMI adapter.
When I close the lid on the laptop, everything seems to sleep OK. But when I wake up in the morning, I see the screen saver running on the Dell, so I know the computer has been on all night. I have also tried putting the laptop into sleep before I close the lid with the same result.

THe USB devices are much more likely to be the culprits than the monitor, tasslehawf.
Try disconnecting the hub and the Logitech mouse dongle and se if the problem persists. If not try each of them individually. If this doesn't fix it try uninstalling the Logitech drivers. (I'd actually be more suspicious of the Logitech mouse than anything else, as it probably "polls" the computer from time to time to see if it is active, quite possibly waking it in the process, but the hub and the attached speaker should be regarded suspiciously for the moment, too).
Cheers
Rod

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Noble Seven wrote:
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<Email Edited by Host>

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Can't get Macbook Pro to sleep with external display connected

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