Apple Kernel Panic Error
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Apple Kernel Panic Log
Mac 911 Mac Gems MacOS Hints Mac 101 Working Mac Get more out of kernel panic apple graphics control your Mac with productivity tips and tricks Follow @macworldbiz Home OS X How to troubleshoot a kernel panic Comments Joe Kissell
Macbook Kernel Panic
| @joekissell Senior Contributor, Macworld Feb 6, 2013 3:30 AM Most crashes on a Mac affect just one application. But you may encounter a type of system-wide crash that brings down your entire Mac: a macbook kernel panic won't start kernel panic. When this occurs, there’s no warning and no way to save your work or do anything else without restarting. And, because kernel panics can have many different causes, diagnosing the problem and preventing its recurrence are difficult. How do you know if it’s a kernel panic? If you’re running OS X 10.7 Lion or earlier, kernel panics usually result in your screen dimming from top to bottom, macbook kernel panic on startup and a message appearing in several languages telling you that you must restart your Mac (by holding down the power button for several seconds to turn it off, and then pressing it again to turn it back on). Up through Lion, a kernel panic looked like this (on an otherwise unresponsive screen). Starting in OS X 10.8 Mountain Lion, OS X automatically restarts when you have a kernel panic, and then displays a similar-looking message for 60 seconds (or until you press a key) telling you that your Mac was restarted because of a problem. (If the kernel panic repeats every time your Mac restarts, OS X will give up after five tries and shut your Mac down.) As Apple notes on its support page about kernel panics, something as random and fleeting as malformed network packets can potentially cause a kernel panic. So, if you experience this problem just once, or only rarely, just restart, get back to work, and forget about it. In Mountain Lion, OS X restarts automatically on a kernel panic and then lets you know what happened. But if you see a kernel panic frequently (Apple apparently defines “frequently” as “more than once every few weeks”), you should take additional troubleshooting steps
very reassuring if you know what it is and how to handle it, there's a good chance your Mac will emerge unharmed. Kernel Panic (KP) is the equivalent of the Windows Blue Screen of Death for Unix-based operating systems, such as OS X and Linux. Technically,
Macbook Pro Kernel Panic
Kernel Panic is a kind of emergency procedure that the operating system enables when it comes macbook air kernel panic across a system error from which it cannot safely recover. Specifically, the OS will shut down automatically, and to use the computer again you’ll
Ibook Kernel Panic
have to restart it manually. Kernel Panic is very rare, and isn't necessarily a symptom of a major problem. It can also be caused, for example, by a malfunction of a defective data package. So, our first tip: if http://www.macworld.com/article/2027201/how-to-troubleshoot-a-kernel-panic.html you only get one KP and, after the reboot, it doesn’t happen again (or at least it doesn't happen again for a long time) and everything seems to work normally, then you can relax and ignore what happened. If the Kernel Panic starts to become more frequent (for example, a couple every month), you should identify the problem and fix it. In this article, we'll tackle the problem from a software point of view, but remember that sometimes the KP could http://features.en.softonic.com/kernal-panic-mac-how-to-fix have been caused by hardware. What can cause Kernel Panic? The most common cause is a hardware failure - either the Mac itself, or an external device or application. Some of these problems are only temporary and will disappear after a reboot, as we have already mentioned. Others are more complicated, and will stop you using your computer. Badly-written drivers or plugins could cause a KP or even the random presence of specific conditions. In these cases, the Mac should work properly again after the reboot. There are other, more complex problems that need to be identified and fixed. Let's start with the ones that are easier to spot. How to recognize Kernel Panic The easiest symptom to recognize is the classic screen with the start button image in the background, and the multilingual message that tells you: "You need to restart your computer." Sometimes, however, you don't get this default message, and your Mac could spontaneously restart, turn off, or stop responding to commands, forcing you to shut down the computer forcibly. In these cases, to be certain that it was a Kernel Panic, just go to /Library/Logs/DiagnosticReports (in Mavericks). There, if the problem was really a KP, you'll find a log with the details of the incident . Sometimes, however, this file could be missing, even if it was a Kernel Panic. In this case (even though it's hard to tell), the problem is probably in
set of procedures which should resolve most kernel panics. Additional information, including how to use and interpret panic logs for troubleshooting, can be found in the "Kernel Panics" chapter of Troubleshooting http://www.thexlab.com/faqs/kernelpanics.html Mac OS X. Before you begin... The procedures defined herein constitute a testing road https://www.youtube.com/watch?v=hegwkUEwDTk map and should be followed in the order specified. Read this FAQ thoroughly before proceeding in order to familiarize yourself with the steps and assure you have the necessary resources available. WARNING: Some of the testing procedures defined herein may require that you: Connect and disconnect peripheral devices. Work inside your computer. Follow all safety kernel panic instructions specified in the Apple manual which accompanied your Mac. In particular: Shut down your Mac and disconnect external power before working inside your Mac. Where feasible, remove the battery before working inside a laptop or portable computer. Consult the manual that shipped with your Mac for all safety procedures. Always follow all Apple-recommended safety procedures without fail. Causes of kernel panics General causes of kernel panics Kernel macbook kernel panic panics are often caused by one or more of the following issues. Defective or incompatible RAM often causes of kernel panics. Despite being a highly-reliable product, RAM can fail. Modern operating systems, like Mac OS X, are sensitive to RAM. Purchase additional RAM from either Apple or third parties who guarantee their RAM is compatible with Mac OS X, offer a liberal exchange policy, and provide a lifetime warranty should the RAM become defective or a later version of Mac OS X introduce incompatibilities. Incompatible, obsolete, or corrupted kernel extensions. If a third-party kernel extension or one of its dependencies is incompatible or obsolete with respect to the version of Mac OS X you are using, kernel panics may occur when the kernel executes such extensions. Likewise, if a kernel extension or one of its dependencies is corrupted, such as the result of hard disk corruption, kernel panics are likely to occur when the kernel attempts to load or execute such. Incompatible, obsolete, or corrupted drivers. Similar to kernel extensions, drivers for third-party hardware which are incompatible with the version of Mac OS X you are using, or which have become corrupted, will cause in kernel panics. Hard disk corruption, including bad sectors, d
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