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Apple Computing Products:
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Yet Another *Panic Attack* using OSX 10.6.8
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<blockquote data-quote="Randy B. Singer" data-source="post: 1611076" data-attributes="member: 190607"><p>A Kernel Panic is a sign that you have a serious problem. It is likely that serious problem will worsen and lead to data loss if not attended to.</p><p></p><p>I'd say that about 80% to 90% of the time kernel panics are due to a hardware problem. In order of likelihood, that problem is usually:</p><p></p><p>- bad third party RAM</p><p>- a problematic USB hub</p><p>- a peripheral that your Mac doesn't like for some reason (sometimes just a poorly attached cable, or a bad cable, is the problem)</p><p></p><p>If you have very recently added new software, especially something that alters the system at a low level, such as anti-virus software, or something that changes the look and/or function of the Mac interface, I would suspect that first. Uninstall that software and see if things get better. (This type of software typically requires an uninstaller to completely disable. Just dragging the application, or the application's folder, to the Trash won't disable it.)</p><p></p><p>If that isn't it, I would restart the Mac with the Shift key held down (invoking a Safe Boot, with all kernel extensions disabled) and see if the problem is gone while running in Safe mode. If the problem is gone while in Safe mode, the Kernel Panics are probably due to a software problem. It it persists while in Safe mode, the problem is most likely hardware related.</p><p></p><p>If you suspect a hardware problem, the next thing that I would do is to shut down your Mac, uninstall all peripherals other than the Apple-supplied keyboard and mouse (even those that might be turned off), restart and see if that helps. If it does, you can re-attach one peripheral at a time, restarting each time, until you isolate the offending peripheral. </p><p></p><p>If that isn't a solution, I would remove all third-party RAM and see if that fixes things.</p><p></p><p>Running Apple's Hardware Test might give you some answers:</p><p><a href="http://support.apple.com/kb/HT1509" target="_blank">Using Apple Hardware Test</a></p><p></p><p></p><p>Helpful Web sites:</p><p></p><p>"Tutorial: Avoiding and eliminating Kernel panics"</p><p><a href="http://reviews.cnet.com/8301-13727_7-10344626-263.html" target="_blank">Tutorial: Avoiding and eliminating Kernel panics - CNET</a></p><p></p><p>OS X: About kernel panics</p><p><a href="http://support.apple.com/kb/ts3742" target="_blank">OS X: About kernel panics</a></p><p></p><p>How to troubleshoot a kernel panic</p><p><a href="http://www.macworld.com/article/2027201/how-to-troubleshoot-a-kernel-panic.html" target="_blank">How to troubleshoot a kernel panic | Macworld</a></p><p></p><p></p><p>Also, your Mac maintains logs of all of your kernel panics, and the logs can give you clues as to what caused the panics. The problem is that it's not easy to understand those logs. Here is some background information if you are brave enough to wade into this:</p><p></p><p>TN 2123 CrashReport Deciphere</p><p><a href="http://developer.apple.com/mac/library/technotes/tn2004/tn2123.html" target="_blank">http://developer.apple.com/mac/library/technotes/tn2004/tn2123.html</a></p><p>and </p><p>TN 2063: Understanding and Debugging Kernel Panics</p><p><a href="http://developer.apple.com/technotes/tn2002/tn2063.html" target="_blank">http://developer.apple.com/technotes/tn2002/tn2063.html</a></p><p></p><p> Look for log files named "panic.log" here:</p><p></p><p>/Library/Logs/Diagnostic Reports</p><p>and here</p><p>/username/Library/Logs/DiagnosticReports and PanicReports</p></blockquote><p></p>
[QUOTE="Randy B. Singer, post: 1611076, member: 190607"] A Kernel Panic is a sign that you have a serious problem. It is likely that serious problem will worsen and lead to data loss if not attended to. I'd say that about 80% to 90% of the time kernel panics are due to a hardware problem. In order of likelihood, that problem is usually: - bad third party RAM - a problematic USB hub - a peripheral that your Mac doesn't like for some reason (sometimes just a poorly attached cable, or a bad cable, is the problem) If you have very recently added new software, especially something that alters the system at a low level, such as anti-virus software, or something that changes the look and/or function of the Mac interface, I would suspect that first. Uninstall that software and see if things get better. (This type of software typically requires an uninstaller to completely disable. Just dragging the application, or the application's folder, to the Trash won't disable it.) If that isn't it, I would restart the Mac with the Shift key held down (invoking a Safe Boot, with all kernel extensions disabled) and see if the problem is gone while running in Safe mode. If the problem is gone while in Safe mode, the Kernel Panics are probably due to a software problem. It it persists while in Safe mode, the problem is most likely hardware related. If you suspect a hardware problem, the next thing that I would do is to shut down your Mac, uninstall all peripherals other than the Apple-supplied keyboard and mouse (even those that might be turned off), restart and see if that helps. If it does, you can re-attach one peripheral at a time, restarting each time, until you isolate the offending peripheral. If that isn't a solution, I would remove all third-party RAM and see if that fixes things. Running Apple's Hardware Test might give you some answers: [url=http://support.apple.com/kb/HT1509]Using Apple Hardware Test[/url] Helpful Web sites: "Tutorial: Avoiding and eliminating Kernel panics" [url=http://reviews.cnet.com/8301-13727_7-10344626-263.html]Tutorial: Avoiding and eliminating Kernel panics - CNET[/url] OS X: About kernel panics [url=http://support.apple.com/kb/ts3742]OS X: About kernel panics[/url] How to troubleshoot a kernel panic [url=http://www.macworld.com/article/2027201/how-to-troubleshoot-a-kernel-panic.html]How to troubleshoot a kernel panic | Macworld[/url] Also, your Mac maintains logs of all of your kernel panics, and the logs can give you clues as to what caused the panics. The problem is that it's not easy to understand those logs. Here is some background information if you are brave enough to wade into this: TN 2123 CrashReport Deciphere [url]http://developer.apple.com/mac/library/technotes/tn2004/tn2123.html[/url] and TN 2063: Understanding and Debugging Kernel Panics [url]http://developer.apple.com/technotes/tn2002/tn2063.html[/url] Look for log files named "panic.log" here: /Library/Logs/Diagnostic Reports and here /username/Library/Logs/DiagnosticReports and PanicReports [/QUOTE]
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Yet Another *Panic Attack* using OSX 10.6.8
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