>refuses to wake up from sleep. What's up?
1st. Reset your powermanager. There's a program called ResetPwrMgr you might get for future use. Dunno where I got it. Below are 2 quotes from Seufert I've saved on Power Management which ought to be in a faq somewhere. . .
2nd. Maybe a dead upgrade. Mine lasted a month, but Newer replaced it promptly with no questions asked.
Good luck.
jpm
Seufert sez:
>If you have a solid green sleep light, the PMU is probably alive, but
>it may have corrupted RAM contents or some such thing. The challenge
>is to reset it, and that can be quite difficult.
>
>>By the way, I tried all this resetting business in all possible
>>combinations, but to no success...
>
>Did you try it a lot? It took me more than 20 tries at resetting the
>PMU to get my 2400 alive once. (Where each try consisted of holding
>the reset button in continuously for 20 seconds or more... sigh.)
>
>>Also in other posts people hinted that even after having their 2400
>>repaired the problems came back. Is this an engineering flaw ?
>
>It's hard for me to tell what the problems people are having really
>are. I *suspect* a lot of the "dead 2400" problems are solvable by
>resetting the PMU. But since the symptoms look like a totally dead
>machine to most people, it usually goes to a repair shop.
>
>You could regard the PMU's control program as an engineering flaw. I
>know that a lot of people at Apple groan every time they're doing a
>new machine and management decides not to completely redo the PMU
>because there isn't enough time or budget. The PMU chip and the
>program it runs has been more or less the same since the original
>PowerBooks; they do slight changes for each new computer to support
>new features but most of it stays the same. Some models are known
>for having flakier than average PMU code, and generally the 2400/3400
>is considered to be about the worst. (The 2400 and 3400's electrical
>design and software are virtually identical.)
>It sounds like you have a badly confused PMU, the bane of all
>PoweBooks. The basic technique for trying to start the machine up
>again is to hold the reset button on the rear of the machine for
>20-30 seconds or longer, then release it. Theoretically this resets
>the PMU and gets things going; the machine should start as soon as
>you release the button. However, one try is not always enough, and
>the 2400 is particularly bad about this, so you may have to try a
>lot. Sometimes you may need to use the regular power key after
>releasing the reset button. You may hear clicks during some of this;
>this is the PMU attempting to turn power on, and therefore powering
>up the speakers, then shutting things back down.
>
>The green light is controlled by the PMU. If it comes on and doesn't
>blink, that means the PMU is in a partial reset state.
>
>Oh, I almost forgot. While you're trying to reset the PMU and get
>the machine started again, remove the battery and use only AC power.
>It's not a safety thing, it's just something that the PMU looks for.
>
>
>The PMU is probably one of the worst-done elements of Apple's
>PowerBooks. It mostly does its job, but it is quite prone to
>crashing and getting confused (the PMU is actually a small
>microprocessor with its own RAM and operating system), and is far too
>difficult to reset reliably. Since it controls all the power
>circuits in the machine, if it crashes you have a PowerBook which
>looks like it's completely dead, even though all the hardware in the
>machine is fine.
>
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