On restart cpu reduces from 867mhz to 566mhz (Longish-please clip for reply)

Bill Horn riverat at mac.com
Tue Dec 30 07:35:13 PST 2003


I have a 12" AL Powerbook/867/640mb/40g/Superdrive.  After installing 
10.3.2 and restarting, I noticed a perceptible drop in performance.  I 
checked the cpu frequency using Terminal and typing in "sysctl 
hw.cpufrequency" and it returned 56666666.  I checked out my settings 
in the Energy Saver control panel in System prefs and set everything to 
highest performance, even in Battery mode and restarted.  Still showed 
the lower mhz setting.  I shut down completely and performed a PMU 
reset, then started up.  The mhz had returned to 86666666, or normal 
for this machine.  Every time I have to restart, say, after an install 
that requires it, I have to shutdown and perform the PMU reset to 
return to the correct mhz.  I have done a "archive and install" 
re-installation to no avail.  I have run TT 4, Disk Warrior and Apple's 
Hardware test disk, nothing helps or indicates a problem.  Anybody here 
have this problem?  I have read some on Apple's boards are experiencing 
it, but in most reports it seems to be intermittent .  I am almost 
ready to call Apple as my machine is still in its first year of 
warranty.  I think it is a software problem, but cannot locate the 
software that would be resetting the cpu on restart.  I suppose it 
could be a logic board problem, what do you think?  I don't need a 
bunch of advice on whether I should call Apple or send it back, I know 
those are options, I just want to hold on to my PB if I can.

Thanks,

Bill Horn

hi woz



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