Has anyone had problems with the aluminum G4 15" not waking from sleep? Mine does this sporadically, and I haven't been able to pin down the cause.
The sleep light will be blinking normally, then when I open the lid, the screen will stay dark, and I have to restart. I've swapped out the RAM (1024 Mb, 3rd party) with the original (512 Mb), but that has no effect.
I'd love to hear of others' experiences, and, more importantly, what a fix might be.
Thanks.
In article jlilly-B3F0A7.14080125042004@redacted.invalid, John Lilly jlilly@redacted.invalid wrote:
when I open the lid, the screen will stay dark
Have you tried to fiddle with the screen brightness button? Maybe the screen backlight actually set to zero? Just a quick thought.
"John" == John Lilly jlilly@redacted.invalid writes:
John> Has anyone had problems with the aluminum G4 15" not waking from John> sleep? Mine does this sporadically, and I haven't been able to John> pin down the cause.
John> The sleep light will be blinking normally, then when I open the John> lid, the screen will stay dark, and I have to restart. I've John> swapped out the RAM (1024 Mb, 3rd party) with the original (512 John> Mb), but that has no effect.
John> I'd love to hear of others' experiences, and, more importantly, John> what a fix might be.
Known problem. No known solution yet.
John> The sleep light will be blinking normally, then when I open the John> lid, the screen will stay dark, and I have to restart. I've John> swapped out the RAM (1024 Mb, 3rd party) with the original (512 John> Mb), but that has no effect.
Does it do that more if your suspend while on battery (rather than on AC power)? Does it sometime even fail to get to the "sleep light blinking" stage? When you wake it up and nothing happens, does the sleep light still blink? Do the caps-lock and num-lock keys light on/off when you press them?
Known problem. No known solution yet.
My questions above reflect my problem with a 12" PB G4. What do you mean by "known problem", where is the problem (in the battery, the memory (it seems like it happens almost only when I add the 512MB extension), the software, the rest of the laptop)?
Stefan
In article nospam-2BB0D7.21151225042004@redacted.invalid, Matti Haveri nospam@redacted.invalid wrote:
In article jlilly-B3F0A7.14080125042004@redacted.invalid, John Lilly jlilly@redacted.invalid wrote:
when I open the lid, the screen will stay dark
Have you tried to fiddle with the screen brightness button? Maybe the screen backlight actually set to zero? Just a quick thought.
Haven't tried that, but will next time. Thanks.
In article jlilly-B3F0A7.14080125042004@redacted.invalid, John Lilly jlilly@redacted.invalid wrote:
Has anyone had problems with the aluminum G4 15" not waking from sleep?
I haven't but you might want to check this thread:
<http://discussions.info.apple.com/WebX?128@redacted.invalid@redacted.invalid 68d>
Has anyone tried whether a clean install or PRAM reset would fix this?
John Lilly jlilly@redacted.invalid wrote:
In article nospam-2BB0D7.21151225042004@redacted.invalid, Matti Haveri nospam@redacted.invalid wrote:
In article jlilly-B3F0A7.14080125042004@redacted.invalid, John Lilly jlilly@redacted.invalid wrote:
when I open the lid, the screen will stay dark
Have you tried to fiddle with the screen brightness button? Maybe the screen backlight actually set to zero? Just a quick thought.
Haven't tried that, but will next time. Thanks.
I've had this happen a couple of times, last time yesterday, with my PB 12, and fiddling with brightness or any other keys does not cure it. In my case it arose from unwittingly unplugging an ipod while the computer was asleep. never woke up again, no matter what you did, and the only solution was to restart
Many "wake from sleep" problems arise when you plug or unplug USB devices while the machine is asleep.
My powerbook wakes up for 10-30 seconds when I plug or unplug a mouse for example, I don't know why it does that. And if you disturb it during that cycle, it often freezes or forgets its calibrated display profile or other strange things.
If you always plug/unplug your USB devices while awake, you are much less likely to run into problems.
Making USB hot-pluggable was a great idea. But I wish it were cold-pluggable as well.
Mats Weber wrote:
My powerbook wakes up for 10-30 seconds when I plug or unplug a mouse for example, I don't know why it does that.
I imagine it needs to wake up to install/activate the necessary drivers and set some files correctly. There's an enormous amount of software stuff that goes on behind the scenes to make your USB device "just work" when you plug it in. I'm not sure why this can't be done when the machine wakes up instead of when the device is plugged in; perhaps some devices wouldn't like to be ignored for so long?
Pete
In article c6o56d$dt3$1@redacted.invalid, Pete Verdon usenet@redacted.invalid wrote:
Mats Weber wrote:
My powerbook wakes up for 10-30 seconds when I plug or unplug a mouse for example, I don't know why it does that.
I imagine it needs to wake up to install/activate the necessary drivers and set some files correctly. There's an enormous amount of software stuff that goes on behind the scenes to make your USB device "just work" when you plug it in. I'm not sure why this can't be done when the machine wakes up instead of when the device is plugged in; perhaps some devices wouldn't like to be ignored for so long?
Pete
Doesn't have anything to do with plugging in USB (or any other) devices. It happens when it's not plugged in to anything.
John Lilly jlilly@redacted.invalid wrote:
Has anyone had problems with the aluminum G4 15" not waking from sleep? Mine does this sporadically, and I haven't been able to pin down the cause.
The sleep light will be blinking normally, then when I open the lid, the screen will stay dark,
I have had this happen with my titanium G4 15" a few times.
and I have to restart.
When it happens the next time, try this: Put your Powerbook to sleep blindly (not by closing the lid, but by pressing the power button and then the "S" key), wait until the sleep LED lights up and then wake it up again by pressing any key. This has brought my display back to life on such occasions. Maybe it will work for you, too. Good luck!