Apple has released an update for its latest MacBook Pro systems that resolves an issue where systems running under wall power may unexpectedly shut down under heavy workload if the battery is at low levels. Apple does not specify exactly what revisions of the MacBook Pro this update is for, but it will only install on those for which it applies.
Putting a system to sleep is far more convenient than shutting it down between uses, because it allows you to save the machine's running state, to quickly pick up from where you left off without having to load the OS and programs again. While sleeping is usually a fairly quick process, sometimes problems can occur that cause it to take a long time or even hang. In these cases, even if you close a laptop's screen the system will stay running, and will then either just continue to run normally or not respond to any user input.
Unfortunately, … Read more
Sometimes after running a system update, be it a security patch, an incremental OS update, or a full upgrade to a new OS version, you may experience problems with the system's fans running loudly. This may happen immediately and continuously after updating the system, or it may be an intermittent but frequent occurrence. Sometimes this can be coupled with system slowdowns, but at other times it may seem to happen with no other apparent effects.
There are several reasons why this can happen, including corrupt hardware settings, corruption in software configurations and temporary files, and a fault in the … Read more
After updating your OS you may find a number of small issues with programs not functioning properly or some system services not working. As we noted earlier, some people have had difficulty with iTunes freezing after updating to OS X 10.6.7, but in addition some other people have found their Bluetooth devices such as the Magic Mouse and Magic Trackpad have not been able to connect.
When these types of issues occur, sometimes basic resets can clear the problem and cause the system to properly recognize the available services. The basic resets are to restart the computer (using … Read more
Though the OS X operating system is very robust at handling software-related crashes and hangs, there are times when a problem may be beyond the scope of the operating system's abilities to manage and the system can either crash or freeze. When this happens, the system may show some clue in the system console, but likely it may only be a brief but repeating message that mentions something like the following:
Dec 20 13:33:23 localhost kernel: AppleSMU -- shutdown cause = 3
What is happening here is the system's power manager (called the Power Management Unit or &… Read more
Apple has released a couple of firmware updates for the system management controller (SMC) in the 2007-2008 MacBook and MacBook Pro systems. These are the systems that were available before the aluminum "unibody" systems were released.
The update addresses problems that prevented the systems from charging with the newer power adaptors with the "L-shaped" magsafe connector.
The downloads are about 880KB in size, and should be available through Software Update for relevant systems, but can also be downloaded from the following Web pages.
Charging issues experienced by owners of older MacBook and MacBook Pro models when using the new L-shaped MagSafe power adapters have been solved via a firmware update from Apple. … Read more
MacFixIt Answers is a feature where we answer questions e-mailed to us by readers. This week, we have questions on an iMac that randomly switches off, where the theme files for Keynote are located on the hard drive, and reinstalling OS X over a damaged installation.… Read more
Apple has released a couple of security updates, for both Snow Leopard and Leopard systems. In addition, there are a couple of firmware updates available for the 27-inch iMac, which will update the system management controller and EFI firmware. These updates should be available through Software Update for applicable systems.… Read more