On Oct 18, 11:03 pm, Bill Connelly <[email protected]> wrote:
> > I would suspect the USB device.
>
> I mentioned this because if I shut down my QS Dual 2002 under 10.5.7,
> having my USB/MIDI keyboard connected and turned on, and then try to
> Startup without the Keyboard on, I get a kernal panic.
>
> Probably due to a "state change" relative to USB from the previous
> session.
>
> Hope this may add insight into your issues.
Yes, this indeed looks to be a USB "state change" issue. I've gone 12
days now without another incident with the display sleep, but the
other day I did have an instance where the keyboard and mouse froze
and it took plugging/unplugging USB devices to get them to come back.
If this is what happened when the display had been sleeping before,
this could well be the same problem manifesting itself.
In my case, my ADC Studio Display may be another wrinkle in the mix,
as I have a Radeon 9600 and an Apple DVI to ADC adapter to break out
the USB, power and vid signals. The mouse is plugged into the
keyboard, the keyboard is plugged into the monitor's hub, etc. And if
that wasn't enough, I have an APC UPS on one of the USB ports. Living
in Florida, we're prone to occasional spikes, so perhaps a recent
spike which triggered the UPS momentarily screwed up the USB "state?"
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