Mac Pro Internal Clock Problem

Discussion in 'Mac Pro' started by blindtheater, Nov 4, 2006.

  1. macrumors newbie

    Joined:
    Nov 4, 2006
    #1
    hello everyone, this is my first post in this forum. i own a 2.66mhz mac pro and there are a few details that have been popping up. first, the time display changes timezones at random. i have bootcamp installed and it does the same thing on the windows xp side. this is becoming a problem since i power up the mac on schedule and now it powers up at random times. the other problem is that the startup chime on mac os x appears for a few weeks and then itll go away but still boots up with no problem. i have searched countless forums and have not found an answer to these questions. any help is appreciated.
     
  2. macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #2
    The problem is Windows...

    The hardware uses UTC time, as does OS X.
    Windows uses Local Time (defaulting to Pacific).

    When you boot into Windows, it syncs the clock to PST.
    When you Boot into OS X, it syncs the clock to UTC.

    The problem is that both OS's don't sync on boot. It may be quite some time (I think it's 12 hours?) before it syncs to an atomic clock again.

    You should be able to write a script in each OS to force a time sync on boot.
     
  3. macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #3
    the startup chime is based on the volume level when you shutdown. If you have the volume muted on shutdown, the startup chime should be muted too.

    Can someone please correct me if I'm wrong on this. (yeah, like I actually have to ask...)
     
  4. macrumors 65816

    Chone

    Joined:
    Aug 11, 2006
    #4
    Yeah its not an internal clock problem, it happens when you sync back and forth between Windows and OSX, happens on my Mac Pro, happens on my MBP, happened on my iMac and it probably happens on the Mac mini as well.
     
  5. thread starter macrumors newbie

    Joined:
    Nov 4, 2006
    #5
    thanks

    thanks guys, i wasnt expecting such quick responses. ill see what i can do to sync the two operating systems.
     
  6. macrumors 68040

    trainguy77

    Joined:
    Nov 13, 2003
    #6
    Yes your correct. :)
     

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