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Powerbook G4 not waking up

Message #1 - Posted 2005/04/20 - Karel Koskuba

After 10.3.8 my wife's G4 Powerbook would often not wake up from sleep with a faint bar at the bottom of an otherwise black screen. If I disconnected the printer's USB cable, it happened less often. I was hoping 10.3.9 would cure it (as there were quite a lot of people with similar problems).

However the sleep problem is still there but no one has to be reporting this problem for a while. Has it been fixed? Is there something I can do to fix it? (I tried resetting PMU with no result).

Thanks.

Regards,

Karel

Message #2 - Posted 2005/04/20 - setok

Karel Koskuba wrote:

However the sleep problem is still there but no one has to be reporting this problem for a while. Has it been fixed? Is there something I can do to fix it? (I tried resetting PMU with no result).

In my experience PowerBooks not waking up from sleep is surprisingly common. Every OSX release seems to try and fix this but apparently doesn't. Amazing how difficult it is just to get a wake-up to work...

Message #3 - Posted 2005/04/22 - Laurent Daudelin

In message , setok@fishpool.com wrote:

Karel Koskuba wrote:

However the sleep problem is still there but no one has to be reporting this problem for a while. Has it been fixed? Is there something I can

do

to fix it? (I tried resetting PMU with no result).

In my experience PowerBooks not waking up from sleep is surprisingly common. Every OSX release seems to try and fix this but apparently doesn't. Amazing how difficult it is just to get a wake-up to work...

I have used 3 different models of PowerBook since the Mac OS X public beta 4 years ago and never had a problem to wake up any of them. I never shutdown, just put them to sleep. The only thing I can mention is that I almost never use or connect any peripheral, be it mouse, keyboard or external drive. I have read before about problems when waking up a computer with USB devices connected that wouldn't initialize properly after sleep and not only with PowerBook or iBook. So, my first advice would be to disconnect *ANY* device before putting the computer to sleep and see if that helps...

-Laurent.
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Message #4 - Posted 2005/04/23 - zit

I have 2 external firewire hard drives velcro'd to the lid of my powerbook. I occasionally get the "sleep of death", especially when moving to a new location. I suspect that a circuit breaker has tripped and killed the backlight. Next time it happens, I intend to close the lid again, unplug the Firewire drives, and see it that wakes it up. I have heard that this breaker can be reset without a forced power off. One could test this theory by holding the translucent apple on the back of the screen up to a light and see if something is displayed in the little circle of light that will appear

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