Mac OS X 10.3.8 (#11): Wake-from-sleep issues (cont.);
Mac OS X 10.3.8 (#11): Wake-from-sleep issues (cont.);
Wake-from-sleep issues (cont.) We continue coverage of a variety of issues that occur when attempting to wake some systems from sleep and are more frequent under Mac OS X 10.3.8.
In addition to a host of solutions that have proved successful in previous iterations of these issues, we continue to not new potential fixes.
Confirmation of previous fix: Turn off Energy Saver options Several users have reported success with a previously published workaround that involves disabling any automatic sleep or wake settings in the Energy Saver pane of System Preferences.
Tasos Petousis writes:
"I too had a wake from sleep problem after placing my system to sleep a second time after starting it up from off. That is, the first time I placed my system to sleep, after starting it up from absolutely off, I had no problem at all - everything normal. The subsequent time I put the system to sleep the screen would go blank but the computer would keep running. Sometimes the fans would go into hyper-drive as well, after a while.
"The fix (after reading MacFixit) was: Turning off all Wake/Other options in Energy Saver. Thankyou, thankyou, thankyou"
Confirmation of previous fix: Reset PMU Users also continue to report success with resetting the PMU.
MacFixIt reader Jeffrey writes:
"Just to let you know. I had problems waking up my new G5 iMac (20 inch screen) I just got. I have the screen save to come on after five minutes which it does. But after about a half hour or so, I'll walk away and come back and my computer will be sleeping. Which I found odd, because I had my settings in the Energy Save pane set to 3 hours for the display and the hard disk. When I try waking it up, it would not. I talked to Apple and they were wondering if the light was pulsating on the front of the iMac monitor. And it was not. Right away they told me I would need to reset the PMU. Happy to report, it worked. The problems no longer occur, and its been over a week. I am also very happy to see that Apple resolved the issue in less than five minutes. Impressive."
Instructions for resetting the PMU for various Mac models are contained in the following Knowledge Base articles:
Another: Resetting NVRAM via Open Firmware A number of users report that resetting NVRAM resolves wake-from-sleep issues.
In order to perform this process, hold down the Command, Option, O and F keys at startup. When the prompt appears, type:
- reset-nvram (then press return)
- reset-all (then press return)
One reader writes: "The technician led my friend through the same PMU and PRAM/NVRAM resets that he had just performed ... but then did not let him stop there. He also insisted that the NVRAM be reset from the Open Firmware screen prompt
"This solved his problem! His new iBook G4 now wakes from sleep each and every time."
Another fix: Not setting a logout interval MacFixIt reader Jonathan reports that not setting an automatic logout time in the Security pane of System Preferences resolved wake-from-sleep issues on his system:
"I also had this wake from sleep issue with a G5/1.6 running OS X 10.3.8. The screen would go black after a period of time and only a manual restart would work. The solution was to uncheck the 'Log out after xxx minutes of activity' in the Security panel."
Manually putting the system to sleep An age-old workaround -- putting the system to sleep via the Apple menu rather than closing a PowerBook/iBook lid or pressing a desktop power button -- can work to avoid these issues on some systems.
MacFixIt reader Liz Beck writes:
"I thought you might find it interesting that I avoid the sleep problem with my 12" G4 PowerBook by putting the PowerBook to sleep (using the sleep command, not closing the cover) and then waiting until the external monitor that I connect it to is totally asleep (amber light instead of green light on) before disconnecting the PowerBook. When I do that I have no problems with sleep issues."
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