What causes Dump Panic in Kernel? Grey Screen and crash

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What causes Dump Panic in Kernel? Grey Screen and crash

Macbook Air OSX v 10.9.5, 1.4 GHz Intel Core i5, 4GB 1600 MHz.

My Air crashed twice yesterday for some reason. It gave a grey screen which said that it has crashed and restarted on its own. This worked. Twice.

I did not save the crash reports that were shown after restart. But from the Console, under Diagnostics and Usage Messages, I have the log reports as below. What might be the possible causes for this?

I have a thumb drive that is constantly installed in a USB port for extra disk space. In the last few days, there have been 'Not Ejected properly' messages. Could this be a cause?

07/08/15 1:24:53.600 pm

DumpPanic[76]

com.apple.message.domain: com.apple.crashreporter.writereport.panic

com.apple.message.signature: Kernel

com.apple.message.signature2: UNBUNDLED |||

com.apple.message.signature3: UNKNOWN

com.apple.message.result: noop

com.apple.message.summarize: YES

07/08/15 1:25:10.182 pm

ReportPanic[273]

com.apple.message.domain: com.apple.ReportPanic.matchedpanic

com.apple.message.action: not matched and frequent

com.apple.message.panic_id: not matched

MacBook Air, OS X Mavericks (10.9.5)

Posted on Aug 7, 2015 9:05 PM

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Answer 1

Linc Davis

Level 10

209,739 points

Aug 8, 2015 7:18 AM in response to SR_2110

Disconnect the USB flash drive and see whether the panics stop. Probably, they won't. In that case, they're caused by an internal hardware fault.

Make a "Genius" a ppointment at an Apple Store, or go to another authorized service provider. You may have to leave the machine there for several days.

Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional—ask if you need guidance.

If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.

Keeping your confidential data secure during hardware repair

Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced.

*An SSD doesn't need to be zeroed.

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Answer 2

Linc Davis

Level 10

209,739 points

Aug 7, 2015 9:08 PM in response to SR_2110

In the Console window, select

DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports

(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select

View ▹ Show Log List

from the menu bar.

There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.

If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.

In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)

Please don’t post other kinds of diagnostic report.

I know the report is long, maybe several hundred lines. Please post all of it anyway.

When you post the report, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.

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