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TICKET ARCHIVE -> iMac crashes after going into sleep mode

twinmom - Mar 16, 2006 - 7:57 am

Hello-
I have an iMac G4 with 512 MB of RAM. I recently simultaneously had a new hard drive and upgraded to Tiger. I have kept up with all the latest upgrades of Tiger. Since my new hard drive and upgrading to Tiger, I have found that my computer crashes when I try to get it out of sleep. It doesn't seem to be a complete crash though-- the screen comes back, and I can hear that I am getting email and iChat sounds, but my mouse is frozen and I can't use the keyboard to navigate either so it is essentially crashed requiring a power down.
This doesn't happen everytime it sleeps, but about 75% of the time.
I read that there were sleep issues with Tiger and iMacs, but it seemed like they were supposed to be fixed already. I am trying to figure out if this could be a hard drive issue or not.

Thanks for your help. This is my first question!

Christy Wolfe

ishan - Mar 16, 2006 - 8:33 pm

Try to reset the iMac using the instructions for your particular model on Apple's infodoc pages. That should work (and should have been done after installing the drive by the installer). If it doesn't please let us know and we'll come up with some other ideas.

HTH and please let us know what happens. Thanks.

twinmom - Mar 22, 2006 - 2:25 pm

Hi-
Sorry for my ignorance, but do you mean for me to reset the PRAM or the Power Management Unit (PMU)? I found instructions referring to resetting both for related issues.
http://docs.info.apple.com/article.html?artnum=95165
Christy

ishan - Mar 22, 2006 - 9:08 pm

Reset the PMU first. You can reset the PRAM as well, it won't hurt anything.

twinmom - Apr 3, 2006 - 9:27 pm

It took me a while to get to do this. I reset the PMU. Unfortunately, the first time it went into Sleep mode, the same thing happened so I think the problem must lie elsewhere. Again, it isn't a full SPOD crash- just a frozen mouse cursor, keyboard. I still get mail, hear iChat sounds, etc.

TechSupport - Apr 8, 2006 - 11:30 am

This ticket has been moved to the open forums for more exposure.

Please follow this link:

http://www.macosx.com/forums/showthread.php?t=270661