Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Nov 4, 2006, 11:50 AM   #1
blindtheater
macrumors newbie
 
Join Date: Nov 2006
Mac Pro Internal Clock Problem

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.
blindtheater is offline   0 Reply With Quote
Old Nov 4, 2006, 12:07 PM   #2
Transeau
macrumors 6502a
 
Transeau's Avatar
 
Join Date: Jan 2005
Location: Alta Loma, CA
Send a message via AIM to Transeau
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.
__________________
2009 27" iMac 2.8GHz Core i7, 32GB RAM, 2TB HDD
2012 15" Macbook Pro, 2.2GHz Core i7, 16GB RAM, 256GB SSD & 750GB HDD (no optical drive)
Transeau is offline   0 Reply With Quote
Old Nov 4, 2006, 12:09 PM   #3
Transeau
macrumors 6502a
 
Transeau's Avatar
 
Join Date: Jan 2005
Location: Alta Loma, CA
Send a message via AIM to Transeau
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...)
__________________
2009 27" iMac 2.8GHz Core i7, 32GB RAM, 2TB HDD
2012 15" Macbook Pro, 2.2GHz Core i7, 16GB RAM, 256GB SSD & 750GB HDD (no optical drive)
Transeau is offline   0 Reply With Quote
Old Nov 4, 2006, 12:10 PM   #4
Chone
macrumors 65816
 
Chone's Avatar
 
Join Date: Aug 2006
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.
Chone is offline   0 Reply With Quote
Old Nov 4, 2006, 12:17 PM   #5
blindtheater
Thread Starter
macrumors newbie
 
Join Date: Nov 2006
thanks

thanks guys, i wasnt expecting such quick responses. ill see what i can do to sync the two operating systems.
blindtheater is offline   0 Reply With Quote
Old Nov 4, 2006, 12:33 PM   #6
trainguy77
macrumors 68040
 
trainguy77's Avatar
 
Join Date: Nov 2003
Send a message via AIM to trainguy77 Send a message via MSN to trainguy77 Send a message via Yahoo to trainguy77
Quote:
Originally Posted by Transeau View Post
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...)
Yes your correct.
trainguy77 is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
thread Thread Starter Forum Replies Last Post
Problems with Radeon 5870 on my Mac Pro using Boot Camp uelef Mac Pro 9 Jul 14, 2012 12:55 PM
Graphic card problem of my Mac Pro Leslie.Hon Mac Pro 8 Dec 21, 2011 01:28 PM
Backup drives in Mac Pro bLiss Mac Pro 4 May 29, 2011 03:49 PM
Mac Pro + u2311h Problems mrt209 Mac Pro 20 Feb 3, 2011 10:18 AM
Macbook pro 15" i7 problems, need some help. filfortugno MacBook Pro 1 Nov 7, 2010 05:44 PM


All times are GMT -5. The time now is 09:27 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC