Many different things could cause an application or the system
to become unresponsive, but if you're using a
Power Mac G5 with Mac OS X 10.3, you should try the steps presented in
this article before spending time on more
generalized
troubleshooting procedures.
This document addresses a known issue that might cause one or more of
these symptoms:
- You can move the pointer, but the system ignores mouse clicks.
- The Force Quit dialog window does not appear when you press Option-Command-Escape.
- The computer can only be turned off by holding the power button or by disconnecting the power cable.
This can happen with any Power Mac G5 that's using Mac OS X 10.3 or
later,
except Power Mac G5 (June 2004) 2.5 GHz or Power Mac G5 (Late 2004) computers.
Important: If you see a specific application unexpectedly quitting or a
kernel panic issue, this document does not apply.
See
this instead for troubleshooting tips.
Solution
Download and install
Mac OS X Update 10.3.6. This
update improves general system reliability and addresses these specific
symptoms.
Important: If you previously disabled Quartz Extreme while troubleshooting with AppleCare, use these steps to re-enable Quartz
Extreme. You can use them before or after installing the update.
- Open /Applications/Utilities/Terminal.
- Type, on one line:
defaults delete /Library/Preferences/com.apple.windowserver GLCompositor
- Press Return.
- Restart the computer.