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Computer won't Sleep

Message #1 - Posted 2003/12/03 - Steve B.

Steve B. said: (Jim) wrote in message news:<>...

Steve B. wrote:

My MDD Dual 867 will no longer go to sleep. It now takes about about 20 secs. to go to sleep (it used to happen in less than 5 secs.) and then wakes up again. Usually immediately though sometimes it takes a little while.

Any thoughts?

Some USB devices can cause this - try disconnecting all of them and see if this cures it. You may need to reboot after disconnecting them though. I see this happen if I take my Sony Clie out of cradle while my Mac's asleep - it wakes up and thereafter won't sleep until it's been rebooted. Odd.

I have no USB devices except Cinema Display, keyboard and mouse though I did connect a hard drive the other day to format it. Then my mouse, which is plugged into the Cinema Display, stopped working until I plugged it into the keyboard. A boot into single user mode showed a few lines of messages starting with "USB...": something about a device problem and "releasing device' or something.

Now my mouse works again plugged into the Cinema Display but my computer won't sleep; I hadn't associated the two.

The two are definitely associated. I booted into single-user mode and got several lines of text starting with "USBF:..." and including the text "MakeDevice error creating device", some ASCII that apparently identifies the device and, finally, the text "releasing device". There are three or four lines like this. I then typed "reboot" and, when the computer booted, the System Profiler couldn't see the hub in the Cinema Display (it can still see the keyboard and its hub) *but the computer will stay asleep*. That's right - the hub in the Cinema Display isn't available (the mouse doesn't work if plugged in there) but the computer will sleep as expected.

Next, I restarted normally (not via single-user mode) and, when the computer booted, the the System Profiler could now see the hub in the Cinema Display (the mouse worked when plugged in there too), *but the computer woke up immediately on being put to sleep*.

I'm sure I have a USB issue and it's _new_ - this same computer/OS used to sleep fine. I'm wondering if I've developed a hardware problem - how can I test for this?

Thanks in advance,
Steve = : ^ )

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