Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > PowerPC Macs

Reply
 
Thread Tools Search this Thread Display Modes
Old Mar 5, 2010, 04:56 PM   #1
blunderboy
macrumors 6502
 
Join Date: Feb 2010
sudden iBook Shutdown

So, I just had a weird random shutdown about 20 minutes ago. I rebooted the machine twice and everything was working fine after that, but I checked Console to see if anything was wrong.

Console reported "05/03/2010 14:12:37 kernel ApplePMU::PMU forced shutdown, cause = -127" and a little later, "Improper shutdown detected!" I don't know what's going on here, although I suspect that the PMU might be acting weird because the battery is dead. No kernel panics are showing up in the console log, and I didn't get the "Mac OS X recovered from an unexpected shutdown" message on reboot.

I'm hoping to God it's just the dead battery and not a failing logic board or something. I haven't seen any of the symptoms of that, though; as I said, I did two test reboots after the computer shut itself down and everything seems to be fine.

Specs: the computer is an iBook G4 1.2 ghz, early 2004 model. It's been in good working order except for a dead battery.
blunderboy is offline   0 Reply With Quote
Old Mar 5, 2010, 05:12 PM   #2
jodelli
macrumors Demi-God
 
jodelli's Avatar
 
Join Date: Jan 2008
Location: Windsor, ON, Canada
If you are running on ac and the battery is dead (NFG, no longer charging) then a power interruption from the ac can trigger a 'PMU forced shutdown' message.

This is one possibility.
jodelli is offline   0 Reply With Quote
Old Mar 5, 2010, 06:53 PM   #3
blunderboy
Thread Starter
macrumors 6502
 
Join Date: Feb 2010
Makes sense to me. I don't know if there was a brief power outage or not, because I didn't have any electronics on but the computer and I wasn't using it when it shut down. I'm also wondering if I'd had it underpowered; I was using a 45w Apple power adapter from my old iBook G3 as opposed to the 65-watt 3rd party one that came with this computer when I bought it.

Everything seems OK right nowóI went out and the computer was just asleep when I got backóbut I'll post again if something happens.
blunderboy is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > PowerPC Macs

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
thread Thread Starter Forum Replies Last Post
Latest macbook pro 15" shutdown hangs after Lion upgrade RoskO MacBook Pro 2 Aug 2, 2011 03:07 PM
Macbook Pro won't Shutdown? SinisterPower MacBook Pro 1 Jul 12, 2011 10:00 PM
Ibook g4 still usable? cootersgarage6 PowerPC Macs 2 Nov 27, 2010 11:18 PM
Ibook shutdown! pacety PowerPC Macs 1 May 6, 2010 02:53 AM
ibook shutdown xboiledeggx PowerPC Macs 3 Nov 29, 2005 05:37 PM


All times are GMT -5. The time now is 06:40 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC