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New G5/Cinema Display won't wake from sleep

Message #1 - Posted 2005/03/30 - Cindy Murray

1.8GHz G5/1.25GB RAM/OS 10.3.8/20" Cinema Display

I have my system prefs set so that the monitor goes to sleep after 3 hours of inactivity (screen saver comes on after 15 minutes). The hard drive never sleeps. Sometimes after the monitor has gone to sleep, I cannot wake it up. I've tried the button on the side, tried moving the mouse, space bar, force quit, you name it. The only thing that does anything is the CD eject key, which does open the CD tray. I have to hold down the power key on the front of the G5 until the computer shuts down, then I can reboot it.

I could easily solve this problem by setting the monitor to NEVER go to sleep. That's the setting I used for my G3 iMac. However, when I do that, the pref control panel says that it will shorten the life of my monitor.

My questions are:

1) Does leaving the cinema display awake appreciably diminish the lifespan of the monitor? Even with the screen saver on? And exactly what *IS* the normal lifespan of an LCD monitor?

2) What could be causing the monitor to not wake up?

Message #2 - Posted 2005/03/31 - G5 Medic

in article CJudnQy1JOtU3dbfRVn-rQ@comcast.com, Cindy Murray at cindym3@comcast.net wrote on 3/30/05 6:14 PM:

1) Does leaving the cinema display awake appreciably diminish the lifespan of the monitor? Even with the screen saver on? And exactly what *IS* the normal lifespan of an LCD monitor?

I just use the screen saver on mine and leave the computer run 24/7. It's been running 24/7 over a year now without one issue.

2) What could be causing the monitor to not wake up?

Try this:

1) Try trashing these 2 .plist preferences and reboot. Reset your Energy Saver preferences.

HD > Library > Preferences > SystemConfiguration > com.apple.AutoWake.plist & com.apple.PowerManagement.plist

2) To do an Open Firmware reset: Hold the Command+Option+O+F keys during startup. At the '>' prompt type:

†>reset-nvram
†Return
††>set-defaults
†Return
††>reset-all
†Return

Reset PRAM:

1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4. 3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound (bong) for the second time.
6. Release the keys.

3) Reset your SMU.

http://g5support.com/group/viewtopic.php?p=18499#18499

-G5 Medic
G5 Owners Support Group
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