I have a similar problem with my G5 1ghz. When it freezes (not from
sleep, but frequently in Safari) my only option is to force-shutdown
with the power button or the fans start sounding like a jet getting
ready for take off. I worry about what would happen if this occurs when
I am not at the computer!
Bonnie
On Jan 3, 2005, at 9:33 AM, Lavode wrote:
Hi all,
I am new to the list, and am the proud new owner of a PowerMac G5 Dual
2.5 ghz. I have had the strange wake from sleep issue where all the
fans run at top speed and the computer doesn't respond, and has to be
force-shutdown. I am wondering if anyone has figured out a way to get
around this. Here is what I've read about so far:
Firmware: Mine is up to date according to Apple, version 5.1.8f7.
Permissions and fsck: Have performed, no detectable change.
Energy Saver: Have been running [EMAIL PROTECTED], so I would think this
would prevent sleep. But have gone into it and changed it to never
sleep, but still put the display to sleep.
Here are some other possible solutions that have mixed reviews as to
their effectiveness:
Unplug all usb and non-standard graphics cards: I have 1 hub, and I
do have an older 16 mb card running a second display. When my ADC to
VGA adapter arrives, I will be pulling that board. I have read
reports of people running "barefoot," and still have the problem.
Return the computer and get a G4, or a P4: I would prefer not to, but
if Apple can't make a G5 that works, maybe I'll have to.
Call Apple tech support: Have read about people's experiences with
Apple support, including a guy who has had two mobo replacements, CPU
replacement, and still has the problem. I will be calling Apple
today, and let you know how that goes, though I won't be in front of
the computer when I call (work schedule, and I'm not taking time off
for troubleshooting at this point).
Shut the computer down instead of letting it sleep: I am a firm
believer in the "shut down" crowd, and have no real need to leave my
computer on 24/7. However, I do like to leave it on all weekend, so
this will help minimize the problem.
I would also like to know if the Applecare plan is now a necessity.
My previous Mac is a Yikes I bought secondhand, and it has run like a
champ for two years, with multiple upgrades. I have never bought
Applecare, but the last time I bought new was 1997. Any advice?
It seems that the "PowerMac fans ready for takeoff" issue has plagued
the G5 since its inception, and it was hoped that the rev B series
would fix the problem. Apparently, it hasn't.
Here are the specs and problems:
Fans ramp up and computer crashes (aka Kernal panic from sleep): three
times over a period of four days.
PowerMac G5 Dual 2.5
Stock configuration with these parts added:
16 mb ATI PCI Rage card stock item from my Yikes to run second monitor
until ADC to VGA converter arrives
USB 2 PCI card for 2 extra mobo level ports
KVM switch for PowerMac and Yikes
Belkin USB 2 hub, with Palm dock, iShock II, Camera USB cable, and
apple Extension cable plugged in.
APC UPS Powerchute cable from UPS
iPod dock in Firewire port
Viewsonic 20" flatscreen monitor (hub ports not in use)
Epson RX600 printer
I have not used the computer very long, so have no idea if the
computer was having kernal panic from sleep issues prior to additional
equipment being plugged into it, but the problem seems to be
independent of running barefoot.
TIA,
-Lavode
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