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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Continuous crashing of iMac, need help with error report


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shane01

 
Member Since: Oct 13, 2011
Posts: 2
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Hi All

I'm a Windows developer and only just beginning to experiment with Mac OS X. I have a brand new 27" iMac i5 with 12gb ram. Over the past few days I've have regular crashes (few times a day), where the screen greys out and I'm told to restart.

I need to know if anyone out there can shed some light on this error report for me. I *think* its telling me there is a problem with AirPort, but I'm also not sure if the references to Parallels is important.

Any experts out there?

Interval Since Last Panic Report: 517417 sec
Panics Since Last Report: 3
Anonymous UUID: A1E83DC5-A0CE-4FF8-B71E-BEECF309D4AA

Thu Oct 13 21:46:52 2011
panic(cpu 2 caller 0xffffff80002c268d): Kernel trap at 0xffffff7f80e6df23, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0xffffff8100000000, CR3: 0x0000000000100000, CR4: 0x00000000000606e0
RAX: 0xffffff813bac86bc, RBX: 0xffffff813ba96004, RCX: 0xffffff813ba99566, RDX: 0x0000000000000000
RSP: 0xffffff815a2a3db0, RBP: 0xffffff815a2a3df0, RSI: 0x0000000000000001, RDI: 0xffffff815bb08b00
R8: 0x0000000000000001, R9: 0x7fffffffffffffff, R10: 0x8000000000100000, R11: 0xffffff7f81faef00
R12: 0xffffff815bb08b00, R13: 0xffffff8100000000, R14: 0xffffff813ba9955c, R15: 0x0000000000000072
RFL: 0x0000000000010286, RIP: 0xffffff7f80e6df23, CS: 0x0000000000000008, SS: 0x0000000000000010
CR2: 0xffffff8100000000, Error code: 0x0000000000000002, Faulting CPU: 0x2

Backtrace (CPU 2), Frame : Return Address
0xffffff815a2a3a70 : 0xffffff8000220702
0xffffff815a2a3af0 : 0xffffff80002c268d
0xffffff815a2a3c90 : 0xffffff80002d7a3d
0xffffff815a2a3cb0 : 0xffffff7f80e6df23
0xffffff815a2a3df0 : 0xffffff7f80e6e059
0xffffff815a2a3e20 : 0xffffff7f80ecef67
0xffffff815a2a3e60 : 0xffffff7f80eff4f3
0xffffff815a2a3e80 : 0xffffff7f80ecb015
0xffffff815a2a3ec0 : 0xffffff7f80e8b936
0xffffff815a2a3ef0 : 0xffffff8000639626
0xffffff815a2a3f30 : 0xffffff80006383a0
0xffffff815a2a3f70 : 0xffffff8000638244
0xffffff815a2a3fb0 : 0xffffff8000820057
Kernel Extensions in backtrace:
com.apple.driver.AirPort.Atheros40(500.55.5)[39470173-FCB6-3D66-BC3B-2C4F9BE79A2C]@0xffffff7f80e6c000->0xffffff7f80fabfff
dependency: com.apple.iokit.IOPCIFamily(2.6.7)[6D54F06A-46B7-37FC-AF22-DE68DC18A1A3]@0xffffff7f80822000
dependency: com.apple.iokit.IO80211Family(400.40)[173BE8F7-87D8-3BB4-9AE3-0506B0D215BF]@0xffffff7f80e34000
dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0xffffff7f80910000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
11B26

Kernel version:
Darwin Kernel Version 11.1.0: Tue Jul 26 16:07:11 PDT 2011; root:xnu-1699.22.81~1/RELEASE_X86_64
Kernel UUID: D52AAB80-B2BC-3C6E-BBEA-78BD28064998
System model name: iMac12,2 (Mac-942B59F58194171B)

System uptime in nanoseconds: 12373516609222
last loaded kext at 336912317210: com.apple.driver.AppleUSBCDC 4.1.15 (addr 0xffffff7f8078d000, size 16384)
last unloaded kext at 423933609102: com.apple.driver.AppleUSBCDC 4.1.15 (addr 0xffffff7f8078d000, size 12288)
loaded kexts:
com.parallels.filesystems.prlufs 2010.12.28
com.parallels.kext.prl_hid_hook 6.0 12106.692267
com.parallels.kext.prl_hypervisor 6.0 12106.692267
com.parallels.kext.prl_usb_connect 6.0 12106.692267
com.parallels.kext.prl_vnic 6.0 12106.692267
com.parallels.kext.prl_netbridge 6.0 12106.692267
com.apple.driver.AppleHWSensor 1.9.4d0
com.apple.driver.AppleBluetoothMultitouch 66.3
com.apple.filesystems.autofs 3.0
com.apple.driver.AudioAUUC 1.59
com.apple.driver.AGPM 100.12.40
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.AppleHDA 2.1.1f12
com.apple.driver.AppleMikeyDriver 2.1.1f12
com.apple.driver.AirPort.Atheros40 500.55.5
com.apple.driver.AppleUpstreamUserClient 3.5.9
com.apple.driver.AppleMCCSControl 1.0.26
com.apple.kext.ATIFramebuffer 7.0.8
com.apple.driver.AppleSMCLMU 2.0.1d2
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.2.0
com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0b2
com.apple.driver.AppleLPC 1.5.1
com.apple.driver.AppleBacklight 170.1.9
com.apple.ATIRadeonX3000 7.0.8
com.apple.driver.AppleIntelHDGraphics 7.0.8
com.apple.driver.AppleIntelSNBGraphicsFB 7.0.8
com.apple.driver.AppleIRController 309
com.apple.iokit.SCSITaskUserClient 3.0.1
com.apple.driver.AppleUSBCardReader 3.0.0
com.apple.AppleFSCompression.AppleFSCompressionTyp eDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTyp eZlib 1.0.0d1
com.apple.BootCache 32
com.apple.iokit.IOAHCIBlockStorage 2.0.1
com.apple.driver.AppleUSBHub 4.5.0
com.apple.driver.AppleFWOHCI 4.8.9
com.apple.driver.AppleEFINVRAM 1.5.0
com.apple.iokit.AppleBCM5701Ethernet 3.0.8b2
com.apple.driver.AppleAHCIPort 2.2.0
com.apple.driver.AppleUSBEHCI 4.5.0
com.apple.driver.AppleACPIButtons 1.4
com.apple.driver.AppleRTC 1.4
com.apple.driver.AppleHPET 1.6
com.apple.driver.AppleSMBIOS 1.7
com.apple.driver.AppleACPIEC 1.4
com.apple.driver.AppleAPIC 1.5
com.apple.driver.AppleIntelCPUPowerManagementClien t 166.0.0
com.apple.nke.applicationfirewall 3.0.30
com.apple.security.quarantine 1
com.apple.driver.AppleIntelCPUPowerManagement 166.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 152.3
com.apple.driver.AppleHIDKeyboard 152.3
com.apple.driver.AppleMultitouchDriver 220.62
com.apple.driver.IOBluetoothHIDDriver 2.5f17
com.apple.iokit.IOBluetoothSerialManager 2.5f17
com.apple.iokit.IOSerialFamily 10.0.5
com.apple.kext.triggers 1.0
com.apple.driver.AppleAVBAudio 1.0.0d11
com.apple.driver.DspFuncLib 2.1.1f12
com.apple.iokit.IO80211Family 400.40
com.apple.iokit.IOFireWireIP 2.2.4
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.AppleHDAController 2.1.1f12
com.apple.iokit.IOHDAFamily 2.1.1f12
com.apple.iokit.IOSurface 80.0
com.apple.iokit.IOAVBFamily 1.0.0d22
com.apple.iokit.IOAudioFamily 1.8.3fc11
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.ApplePolicyControl 3.0.16
com.apple.driver.AppleSMC 3.1.1d2
com.apple.driver.IOPlatformPluginFamily 4.7.0b2
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleGraphicsControl 3.0.16
com.apple.driver.AppleBacklightExpert 1.0.3
com.apple.driver.AppleThunderboltEDMSink 1.1.3
com.apple.driver.AppleThunderboltEDMSource 1.1.3
com.apple.kext.ATI6000Controller 7.0.8
com.apple.kext.ATISupport 7.0.8
com.apple.iokit.IONDRVSupport 2.3
com.apple.iokit.IOGraphicsFamily 2.3
com.apple.driver.BroadcomUSBBluetoothHCIController 2.5f17
com.apple.driver.AppleUSBBluetoothHCIController 2.5f17
com.apple.iokit.IOBluetoothFamily 2.5f17
com.apple.driver.AppleThunderboltDPOutAdapter 1.5.0
com.apple.driver.AppleThunderboltDPInAdapter 1.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily 1.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter 1.1.8
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.0.1
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.7
com.apple.iokit.IOUSBHIDDriver 4.4.5
com.apple.iokit.IOAHCISerialATAPI 2.0.0
com.apple.iokit.IOSCSIBlockCommandsDevice 3.0.1
com.apple.iokit.IOUSBMassStorageClass 3.0.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.0.1
com.apple.driver.AppleUSBMergeNub 4.4.5
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.driver.XsanFilter 403
com.apple.driver.AppleThunderboltNHI 1.2.8
com.apple.iokit.IOThunderboltFamily 1.6.3
com.apple.iokit.IOUSBUserClient 4.4.5
com.apple.iokit.IOFireWireFamily 4.4.5
com.apple.iokit.IOEthernetAVBController 1.0.0d5
com.apple.iokit.IONetworkingFamily 2.0
com.apple.iokit.IOAHCIFamily 2.0.7
com.apple.driver.AppleEFIRuntime 1.5.0
com.apple.iokit.IOUSBFamily 4.5.0
com.apple.iokit.IOHIDFamily 1.7.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 165
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.DiskImages 330.1
com.apple.iokit.IOStorageFamily 1.7
com.apple.driver.AppleKeyStore 28.18
com.apple.driver.AppleACPIPlatform 1.4
com.apple.iokit.IOPCIFamily 2.6.7
com.apple.iokit.IOACPIFamily 1.4
Model: iMac12,2, BootROM IM121.0047.B0A, 4 processors, Intel Core i5, 2.7 GHz, 12 GB, SMC 1.72f2
Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x038A, 0x5052494E4345544F4E000000000000000000
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x038A, 0x5052494E4345544F4E000000000000000000
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.55.4-P2P
Bluetooth: Version 2.5.0f17, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: OPTIARC DVD RW AD-5690H
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x850b, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Wired Keyboard 600, 0x045e (Microsoft Corporation), 0x0750, 0xfa130000 / 6
USB Device: iPad, apple_vendor_id, 0x129f, 0xfa120000 / 5
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0xfa111000 / 8
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: USB-PS/2 Optical Mouse, 0x046d (Logitech Inc.), 0xc00e, 0xfd140000 / 6
USB Device: FA GoFlex Desk, 0x0bc2 (Seagate LLC), 0x50a1, 0xfd130000 / 5
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 4
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfd110000 / 3
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chscag

 
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How are you determining that it may be a problem with Airport or Parallels? The kernel panic(s) you're experiencing (at least this one) is related to a kernel task...

Quote:
BSD process name corresponding to current thread: kernel_task
Kernel panics in a Mac are somewhat equivalent to the infamous BSOD we all learned to "love" about Windows. Kernel Panics are usually related to a hardware problem and sometimes software. I would start by looking closely at the extra memory you have in your iMac. Is it after market memory?

If it is, pull the modules from the bottom slots and go back to the original 2 x 2 GB modules in the top slots and see if that cures it. It may be just a matter of reseating the modules. I know from my own experience with adding memory to my Mid 2011 iMac that it takes considerable downward force to seat the modules properly.
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shane01

 
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The line in the stack trace that lead me to AirPort:

Kernel Extensions in backtrace:
com.apple.driver.AirPort.Atheros40(500.55.5)[39470173-FCB6-3D66-BC3B-2C4F9BE79A2C]@0xffffff7f80e6c000->0xffffff7f80fabfff

Also, as a test I've been running the machine using ethernet and with AirPort turned off. No crashes. It did appear that the crashes were when the wireless network was being used heavily by iTunes running on Mac OS X.

Completely wrong path?
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Quote:
Also, as a test I've been running the machine using ethernet and with AirPort turned off. No crashes. It did appear that the crashes were when the wireless network was being used heavily by iTunes running on Mac OS X.

Completely wrong path?
No, not necessarily. However, I find it very unusual for a brand new iMac to crash (kernel panic) because of an airport card. An older iMac, maybe yes. However, I've been in this business long enough to know that it's folly to rule anything out.

I would say keep testing it with airport turned off and plugged into ethernet. Let's see what happens after a few days. In any event, the machine is under warranty and if it does turn out to be a defective airport card, Apple will replace it.
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MartinH76

 
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I can verify this issue, with many, many repeating instances with the same Airport crash log details.

I'm the Mac technician at a college in the UK and we took delivery of 37 new 24" i5 iMacs over summer, all running Lion. Every single one of them has been crashing every 5 minutes for the last week or so when Airport is turned on, (seemingly since I ran the 10.7.2 update on them, but I can't confirm that this is totally accurate). Some are them are even crashing during the .kext load at startup and not making it as far as the login screen.

I've tried replacing the IO80211Family.kext file with the one from Snow Leopard (after hearing of success with this method in another forum where the same issue has been reported), but to no avail. We're now stuck without any wireless connection in the Games Design classroom. The only workaround I can find is to boot into safe mode and delete the wi-fi network option from the Network Settings pane, then restart.

After 7 years in this job and 15 years using Macs, I've never had so many problems with any OS in my life as I've had with Lion....
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mac new comer

 
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Got a new iMac a month ago.

15 sec into conversations on facetime using wifi, kernel panic occurs.

Instructed by phone support to erase and reinstall HD. No help.

Brought to Apple store to test. Could reproduce the problem in the store environment.

Brought home a brand new replacement. Same problem occured again using home wifi... router provided by Verizon services.

Is there a specific conflict to some type of wifi router?

First time converter into Mac. confidence significantly lowered.
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I'm having exactly the same issue as "mac new comer" (in fact, I'm also relatively new to my iMac and iPhone). FaceTime triggers the kernel panic, and does so predictably.

Kernel Extensions in backtrace:
com.apple.driver.AirPort.Atheros40(501.58.1)[13BE9AFD-5158-3CD9-B5E9-AAF5BE3062B4]@0xffffff7f80e6d000->0xffffff7f80facfff
dependency: com.apple.iokit.IOPCIFamily(2.6.7)[6D54F06A-46B7-37FC-AF22-DE68DC18A1A3]@0xffffff7f80822000
dependency: com.apple.iokit.IO80211Family(411.1)[BF69D46E-3F5C-35C5-8167-9F872E3B20AA]@0xffffff7f80e35000
dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0xffffff7f80910000

I've added 4G of memory to the box, but from what I'm seeing here and in other forums, this is apparently a software or firmware issue and probably not a memory issue.
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Quote:
Originally Posted by mac new comer View Post
Is there a specific conflict to some type of wifi router?
An issue with the 802.11 link should never cause a kernel panic, regardless of the router, access point, or the quality of the wi-fi signal. At worst, such problems should only cause the wi-fi link and possibly the interface to go down and be re-negotiated in an orderly way. A full-blown kernel panic, as this is, indicates a hardware problem, or maybe a fundamental software problem such as a badly written driver.
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I talked with a senior tech support person at Apple about this problem. He was reasonably clueful, and we discovered that the crash is in the AirPort wi-fi driver, as expected. Connecting the box via an ethernet cable made it go away. He insisted that the cause of the crash was that FaceTime, being a bit of a bandwidth hog, was exceeding the capacity of the wi-fi connection to pass traffic, with unpredictable results. I insisted that a kernel panic was not an appropriate response to this condition, and that if the capacity of a connection is exceeded, the worst that should happen is that the network interface associated with the AirPort wi-fi system goes away and has to be re-negotiated. The behavior I'm seeing (and which others have seen) is consistent with an uncontrolled buffer overrun in the driver, or some such.

Anyway, the band-aid for this problem seems to be to use a hardwired ethernet connection rather than the iMac's internal wi-fi.
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Downgrade to Snow Leopard and see if the problem goes away. This sounds totally unacceptable to me though. If the driver can't handle a buffer overload it isn't doing its job.
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Quote:
Originally Posted by zacster View Post
Downgrade to Snow Leopard and see if the problem goes away. This sounds totally unacceptable to me though. If the driver can't handle a buffer overload it isn't doing its job.
It's easier to just run an ethernet cable to the nearest hub.
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SO What now, you buy a $2000.00 mac and when you have a problem with the wifi you should shut it down and use a cable instead?

This might not be an option for me since my router is far away and there is no way to run a cable, and why would I do that?

We need a solution to this problem asap.

This is Apple's fault by rushing out Lion untested, I have beed a MS user my entire life then switched to Ubuntu for 2 years and now finally Mac. LION SUCKS - there is nothing good in it or useful. It's all a bunch of stuff that nobody uses, at least for now until it will catch on. But the errors in it are astonishing.

We need to fix the problem, not make it go away by ignoring it.
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Quote:
Originally Posted by lmicu View Post
SO What now, you buy a $2000.00 mac and when you have a problem with the wifi you should shut it down and use a cable instead?

This might not be an option for me since my router is far away and there is no way to run a cable, and why would I do that?
Well my other desktop system is an Ubuntu Linux system. When something doesn't work there, I can file a formal bug report and get some kind of interchange going with the developers. Apple keeps all its users inside a golden cage.

Quote:
Originally Posted by lmicu View Post
We need a solution to this problem asap.
I totally agree with you. The Apple senior tech support fellow with whom I talked tried to tell me that FaceTime uses a lot of bandwidth, which it does, and may exceed the capacity of the wi-fi link, and that that was the reason for the crash. I tried to explain to him that a kernel panic is never an acceptable outcome, regardless of what buffer overruns or other stress conditions a driver might encounter. I explained to him that a properly written driver will fail gracefully if it's stressed beyond its limits - perhaps exiting and then reloading itself. A kernel panic is not a graceful failure mode. I don't know how far up the Apple ladder this insight will go. Proprietary software is a bummer in that the attention of the developers inside the Cathedral is also proprietary!

In my case, I just want the d**n network to work without crashing the system. If I have to hard-wire it, so be it. People need to p**s and moan to Apple until they get the AirPort driver, or its underlying dependencies, fixed so this doesn't happen, and I can take down the ugly cat5 wire that's strung across a corner of our living room! This iMac here is a desktop system, and the Wi-fi is a nice plus, but It's not a big deal to do what I do on all my other in-house computers, which is plug them into the LAN with cat5. Either that, or I can avoid using FaceTime altogether since here it's the only application that I've seen cause this crash.

Quote:
Originally Posted by lmicu View Post
This is Apple's fault by rushing out Lion untested, I have beed a MS user my entire life then switched to Ubuntu for 2 years and now finally Mac. LION SUCKS - there is nothing good in it or useful. It's all a bunch of stuff that nobody uses, at least for now until it will catch on. But the errors in it are astonishing.
I've been using Gentoo Linux and Ubuntu for years, and got an iMac because it's well suited for graphics work, and because it's very, very well integrated with VMware Fusion so I can run both Windows 7 and Ubuntu Linux as VMs and they run smoothly with no problems. This, and the fact that the monitor is first rate and can be properly calibrated for photography work.

Quote:
Originally Posted by lmicu View Post
We need to fix the problem, not make it go away by ignoring it.
Well I'm not exactly sure what I can do, being a mere Apple customer. I could take the box back to the Apple store and demand a replacement - which would probably have the same problem. If by "We" you mean that you work for Apple and can get some serious feedback to the developers, then all I can say is "Thank you!" and "how can I help you".
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Zerpudo

 
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Hello.

First of all, I'd like to let you know that my native language is not english, so please excuse my mistakes.

I was searching for something like this thread. I bought a brand new iMac (mid 2011). For some reason, I was testing the Facetime App with the computer and my iPhone, and after 10 seconds, a kernel panic occurred. I was astonished. Then, I spent some time doing several things with the computer, and tried it again to check if there was any problem with that specific App or it was just a coincidence.

After around 10 secs, again, it crashed.

I don't really know what's wrong with my computer, software, router, or...!

Btw, I'm using Snow Leopard 10.6.8 on a iMac Mid 2011 2.5Ghz Intel Core i5 with the stock 4Gb RAM (2x2Gb).

I've got the crash report, I will post it here. I hope it helps to find a reason/solution.

Thank you so much for your time and help.

Zerpudo.
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Interval Since Last Panic Report: 30385 sec
Panics Since Last Report: 1
Anonymous UUID: 88E7992C-E56E-4520-853A-720F8951AE2F

Fri Dec 23 21:26:55 2011
panic(cpu 0 caller 0xffffff80002d1208): Kernel trap at 0x0000000000000000, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x0000000000100000, CR4: 0x0000000000040660
RAX: 0x00000000ffffffff, RBX: 0x0000000000000000, RCX: 0xffffff805e97bf1c, RDX: 0x0000000000000000
RSP: 0xffffff805e97beb8, RBP: 0xffffff805e97bf50, RSI: 0xffffff8059f2bd00, RDI: 0xffffff804a41d39c
R8: 0x0000000000000001, R9: 0x0000000000000011, R10: 0x0000000000000002, R11: 0x00000f06e2ee7c64
R12: 0xffffff800bb13c08, R13: 0xffffff804a41d39c, R14: 0x0000000000000000, R15: 0x0000000000000000
RFL: 0x0000000000010297, RIP: 0x0000000000000000, CS: 0x0000000000000008, SS: 0x0000000000000010
Error code: 0x0000000000000010

Backtrace (CPU 0), Frame : Return Address
0xffffff805e97bb50 : 0xffffff8000204d15
0xffffff805e97bc50 : 0xffffff80002d1208
0xffffff805e97bda0 : 0xffffff80002e3f4a
0xffffff805e97bdb0 : 0x0
0xffffff805e97bf50 : 0xffffff800032e86b
0xffffff805e97bfa0 : 0xffffff80002c8527

BSD process name corresponding to current thread: kernel_task

Mac OS version:
10K549

Kernel version:
Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64
System model name: iMac12,1 (Mac-942B5BF58194151B)

System uptime in nanoseconds: 16522331573562
unloaded kexts:
com.apple.filesystems.cd9660 1.4.1 (addr 0xffffff7f80f8a000, size 0x32768) - last unloaded 10875264066774
loaded kexts:
com.paceap.kext.pacesupport.snowleopard 5.7.2
com.digidesign.iokit.DigiDal 9.0f4
com.apple.filesystems.msdosfs 1.6.3 - last loaded 8110767227380
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AGPM 100.12.31
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.driver.AudioAUUC 1.57
com.apple.driver.AppleBluetoothMultitouch 54.3
com.apple.driver.AppleUpstreamUserClient 3.5.7
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AppleMCCSControl 1.0.20
com.apple.driver.AppleMikeyDriver 2.0.5f14
com.apple.kext.ATIFramebuffer 6.3.6
com.apple.driver.AppleIntelHDGraphics 6.3.6
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleHDA 2.0.5f14
com.apple.ATIRadeonX3000 6.3.6
com.apple.iokit.AppleBCM5701Ethernet 3.0.5b8
com.apple.driver.AirPort.Atheros9388 426.35.3
com.apple.driver.AppleLPC 1.5.1
com.apple.driver.AppleBacklight 170.0.46
com.apple.kext.AppleSMCLMU 1.5.2d10
com.apple.driver.AppleIntelSNBGraphicsFB 6.3.6
com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0a1
com.apple.driver.AppleUSBCardReader 2.6.1
com.apple.driver.AppleIRController 303.8
com.apple.iokit.SCSITaskUserClient 2.6.8
com.apple.iokit.IOAHCIBlockStorage 1.6.4
com.apple.BootCache 31.1
com.apple.driver.AppleUSBHub 4.2.4
com.apple.driver.AppleFWOHCI 4.7.3
com.apple.AppleFSCompression.AppleFSCompressionTyp eZlib 1.0.0d1
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleAHCIPort 2.1.7
com.apple.driver.AppleUSBEHCI 4.2.4
com.apple.driver.AppleACPIButtons 1.3.6
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
com.apple.driver.AppleSMBIOS 1.7
com.apple.driver.AppleACPIEC 1.3.6
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClien t 142.6.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.12
com.apple.driver.AppleIntelCPUPowerManagement 142.6.0
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleBluetoothHIDKeyboard 141.5
com.apple.driver.AppleHIDKeyboard 141.5
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.iokit.IOSurface 74.2
com.apple.driver.IOBluetoothHIDDriver 2.4.5f3
com.apple.driver.AppleMultitouchDriver 207.11
com.apple.iokit.IOBluetoothSerialManager 2.4.5f3
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.driver.DspFuncLib 2.0.5f14
com.apple.iokit.IOAudioFamily 1.8.3fc2
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleHDAController 2.0.5f14
com.apple.iokit.IOHDAFamily 2.0.5f14
com.apple.iokit.IO80211Family 320.1
com.apple.iokit.IONetworkingFamily 1.10
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleBacklightExpert 1.0.1
com.apple.iokit.IONDRVSupport 2.2
com.apple.driver.AppleThunderboltEDMSink 1.1.1
com.apple.driver.AppleThunderboltEDMSource 1.1.1
com.apple.kext.ATI6000Controller 6.3.6
com.apple.kext.ATISupport 6.3.6
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.AppleSMC 3.1.0d5
com.apple.driver.IOPlatformPluginFamily 4.7.0a1
com.apple.driver.AppleThunderboltDPOutAdapter 1.3.2
com.apple.driver.AppleThunderboltDPInAdapter 1.3.2
com.apple.driver.AppleThunderboltDPAdapterFamily 1.3.2
com.apple.driver.AppleThunderboltPCIDownAdapter 1.1.6
com.apple.driver.BroadcomUSBBluetoothHCIController 2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController 2.4.5f3
com.apple.iokit.IOBluetoothFamily 2.4.5f3
com.apple.iokit.IOUSBMassStorageClass 2.6.7
com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.8
com.apple.iokit.IOUSBHIDDriver 4.2.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.8
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6.1
com.apple.driver.AppleUSBMergeNub 4.2.4
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.8
com.apple.driver.AppleThunderboltNHI 1.2.6
com.apple.iokit.IOThunderboltFamily 1.4.9
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.iokit.IOUSBUserClient 4.2.4
com.apple.iokit.IOAHCIFamily 2.0.6
com.apple.iokit.IOUSBFamily 4.2.4
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOHIDFamily 1.6.6
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.TMSafetyNet 6
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 289.1
com.apple.iokit.IOStorageFamily 1.6.3
com.apple.driver.AppleACPIPlatform 1.3.6
com.apple.iokit.IOPCIFamily 2.6.5
com.apple.iokit.IOACPIFamily 1.3.0
Model: iMac12,1, BootROM IM121.0047.B1D, 4 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 1.71f22
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe, 512 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.35.3
Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST3500418AS, 465,76 GB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: FaceTime HD Camera (Built-in), 0x05ac (Apple Inc.), 0x850b, 0xfa200000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8215, 0xfa111000 / 5
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: Ext HDD 1021, 0x1058 (Western Digital Technologies, Inc.), 0x1021, 0xfd130000 / 5
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 4
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfd110000 / 3
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