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Phil.E.

macrumors newbie
Original poster
Dec 20, 2009
1
0
Someone switched off the power to my iMac the other day. Since I've rebooted:

a] System Profiler shows no awareness of FireWire ("Unable to list FireWire devices" in red)
b] Every boot takes about five minutes, 3+ of which seems to be spent waiting for a response from the FireWire socket (the logs show a 3-minute gap followed by a line that goes something like this:
"/usr/lib/exec/hidd: Timeout waiting for IOKit to be quiet")
c] if it's idle long enough to go to sleep, it goes into a kernel panic (the last line in the log before the panic says
"kernel[0]: IOPMSlotsMacRISC4::determineSleepSupport has canSleep true")

b] looks connected to a], but I can't see any connection with c] (apart from the reference to IO).

This is a last-generation PowerPC G5 from 2005, recently fitted with a new logic board after repeated kernel panics (where 'recently' = 'over 90 days ago'). I'm wary of doing anything too drastic with it, as my TM disk and my alternative boot partition are on a FireWire-attached drive & are hence both inaccessible precisely when I'd most like to see them. I have tried flashing the PRAM, though - it made no difference at all.

Any thoughts on what's going on and what (if anything) I can do about it?

Phil
 
no good can u unstall the fire wire from the device listing then reboot to see if will come up i know on windows sometimes it looses usb and u ahve to to do that to get it to work again
 
http://support.apple.com/kb/HT1317

"If the issue persists, try these steps:

Shut down the computer.

Disconnect all devices and all other cables, except the keyboard and mouse cable(s).

Disconnect the computer from the power outlet and wait for 3 to 5 minutes.
Plug the computer back in and turn it on.

Reconnect the device(s) (one at a time if there is more than one) and test. Test with each port if you have more than one."
 
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