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One solution to no-wake-from-sleep on 10.3.9
Once you've determined that the "not waking from sleep" issue isn't related to software or hardware conflicts, you may want to check out an Apple Knowledge Base article "Resetting PowerBook and iBook Power Management Unit (PMU)" that discusses this issue.
In short, all Apple portables have an integrated circuit on the logic board with one of its functions being controlling the sleep and wake state. Sometimes the power management settings become unstable or corrupt, and resetting the PMU may resolve the issue. As Apple clearly states in the article, resetting the PMU is a last-resort tactic when other fixes don't work. Also, keep in mind that resetting the PMU restores the hardware (including NVRAM) to its default state so use a PMU reset with caution. Some models will also reset the internal clock, so you will also want to check that if you do reset the PMU. Since the PMU reset procedure is different for various iBook/PowerBook models, please read the Apple Knowledge Base article very carefully: http://docs.info.apple.com/article.html?artnum=14449 |
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