On Apr 24, 1:19 am, wildrover.a...@[EMAIL PROTECTED]
(Andy Hewitt) wrote:
> archtops <j...@[EMAIL PROTECTED]
> wrote:
> > I'm running a PowerMac G5 under OS 10.3.9. The unit works normally
> > most of the time, but I will occasionally find it first thing in the
> > morning roaring full blast, with the hard drive and/or fan just
> > spinning continuously at full speed and making quite a racket.
> > Stopping it requires a reboot. If anyone has any counsel on solving
> > this problem, I'd be very much obliged. Email reply preferred, many
> > thanks in advance.
>
> That'll have suffered a serius crash then. Sounds like a sleep issue.
> The noise is actually *all* (7 in a single G5, 9 in a dual) of the fans
> running at full speed as the OS has crashed, and unable to control them.
> It's a safety measure.
>
> Mac OS, for me, has often suffered with issues with sleeping. Sometimes
> it is just down to the exact configuration you have, others can be
> incompatible, or faulty, peripherals.
>
> The most common things will be USB gadgets or hubs. I had a PCI USB card
> that causes everything the have sleep problems, G4s G5s and even PCs.
> Check any third party PCI cards if you have any.
>
> You could try checking the crash logs in Console, they may give a clue,
> look for any marked 'panic'.
>
> I'd start by running a few maintenance jobs first. Get a copy of
> Applejack:
>
> https://sourceforge.net/project/showfiles.php?group_id=79562
>
> And run all the routines as it recommends. This will check the disk for
> errors, repair permissions, check for bad prefs files, and clear caches.
> You just install it, reboot and hold down command-S as it starts. When
> you see the Unixy screen, type Applejack AUTO, and go and get a cuppa.
> The fans will run up while this is working, as the OS isn't running.
>
> Next start with the easy stuff, unplugging USB peripherals, try
> unplugging all of them first, then reconnecting one at a time. Hubs can
> often be the first to cause problems.
>
> Have you upgraded anything, such as a graphics card? I put a flashed
> GeForce6200 into mine and that caused a failure to wake after sleep (I
> now have a Radeon 9800Pro and that works fine). Third party memory is
> worth checking too, Mac OS is very fussy about RAM specifications, and
> you could also have a module start to fail.
>
> It can be a long process to fix, and you'll often not know what did it.
>
> --
> Andy Hewitt
> <http://web.mac.com/andrewhewitt1/>
Andy,
Huge thanks to you and all the others for your very kind and detailed
advice. Happy to keep the forum posted on results. You folks are truly
the best!
-Joe
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