Mats C Posted July 27, 2007 Share Posted July 27, 2007 Anybody else noticed that the computer's clock is running to slow when somekind of speedstep is used? I think it is related to the timebase is changed when the computers processor is running slower and the factor used to calculate this is not updated. At the same time all animations are running slow, probably for the same reason. Any solution to this or is this something you can't do anything about? Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/ Share on other sites More sharing options...
MoDs Posted July 27, 2007 Share Posted July 27, 2007 copy the file "/Library/Preferences/SystemConfiguration/com.apple.Boot.plist" to your desktop open it and modify it to look as follows: <key>Kernel</key> <string>mach_kernel</string> <key>Kernel Flags</key> <string>fsb=133</string> ... Just add fsb=133 then save it. Copy it back to folder and reboot. Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-415817 Share on other sites More sharing options...
daveywilks Posted July 27, 2007 Share Posted July 27, 2007 Would this work for me, my systems been fine for ages, I just re-installed (new tubgirl 10.4.10) and upgraded from a single core to a dual core athlon. My clock seams to be running fast Interestingly when I open the date time prefs, it hangs for a second or 2 then puts the clock to the right time Weird - Help Dave Found another post refering to this (http://forum.insanelymac.com/index.php?showtopic=57133&hl=clock+fast) Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-415847 Share on other sites More sharing options...
Mats C Posted July 27, 2007 Author Share Posted July 27, 2007 I tried this (add fsb=133) but no change. I'm quite sure that it's related to the cpu speed since the time is running about half the accutual (real life) speed. I've seen a notice about this in a thread somewere that RTC sync is not handled correctly by the patched kernel, could this have something to do with it? daveywilks: How much too fast is you clock running? And is your system using any kind of SpeedStep (or simular on you AMD system)? I've heard about systems that's is running the CPU at one speed duing boot and after that the CPU is set to another speed, this could fool the operationg system, I think Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-415855 Share on other sites More sharing options...
MoDs Posted July 27, 2007 Share Posted July 27, 2007 did you repair permissions after you had replaced the file? Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-415897 Share on other sites More sharing options...
Mats C Posted July 27, 2007 Author Share Posted July 27, 2007 Yes, I did and also I checked them manually. I didn't get any messages from DiskUtil during repair so I think the are correct. Is there any way of verifying that the change in effect? Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-415913 Share on other sites More sharing options...
MoDs Posted July 28, 2007 Share Posted July 28, 2007 ok look. maybe your bus speed ain't 533 MHz Apple->About this mac->More Info... and check your Bus Speed. You should divide that value by 4 and put the result in place of 133. PS: I assumed a bus speed of 533 MHz, hence fsb=133 (533/4) Of course you will have to copy the file to your desktop, modify it, then place it back, then repair permissions. You can verify the change by opening the date & time settings and watch the seconds arrow as it moves. It should move with a normal speed, ie one tick per real second. Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-416771 Share on other sites More sharing options...
Mats C Posted July 29, 2007 Author Share Posted July 29, 2007 MoDs: My bus speed is 533 MHz so you assumed right I wonder if there is any differense between the kernel I running now and other available and if that could make any difference? Where did you get your kernel (8.10.1)? Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417243 Share on other sites More sharing options...
MoDs Posted July 29, 2007 Share Posted July 29, 2007 You can get a 10.4.10 update. Search for 10410update.zip Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417273 Share on other sites More sharing options...
Mats C Posted July 29, 2007 Author Share Posted July 29, 2007 Thanks, I'll try that tomorrow (middle of the night here in sweden now). Hopefulle this will solve my problems (the last major thing to fix before going OS X full time) Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417308 Share on other sites More sharing options...
Mats C Posted July 30, 2007 Author Share Posted July 30, 2007 Is kernel 8.10.1 available for SSE2 only processors yet? Found an updater to 10.4.10 but it's SSE3 only Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417432 Share on other sites More sharing options...
MoDs Posted July 30, 2007 Share Posted July 30, 2007 I don't know, but probably it's been released for SSE3 only. Maybe you will have to wait till SSE2 version is released. Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417527 Share on other sites More sharing options...
Ultimatebadass Posted July 30, 2007 Share Posted July 30, 2007 Yeah I have this problem also, not only the clock but the whole system runs slowly when on battery. I don't have powernow/cool&quiet on my AMD Turion enabled (when on AC power the system runs constantly at 2.0Ghz), but when I turn it on on battery it goes down to 800Mhz. I don't think changing the FSB will help much, because it's not supposed to change - powernow/C&C only alter the cpu multiplier. After I back up my system i'll try upgrading to 10.4.10 to see if that does any good to it. (currently running 10.4.9 uphuck AMD sse3 kernel). Link to comment https://www.insanelymac.com/forum/topic/58242-clock-running-to-slow-with-speedstep/#findComment-417573 Share on other sites More sharing options...
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