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Internet Freezing/Kernel Panic - iMac or Bell Issue?

C

CLegros

macrumors newbie
Original poster
May 12, 2014
3
0
I have 3 year old 21" iMac.

About a year ago Bell replaced my white modem with the black Sagemcom 2864. (Everything worked perfectly before this.) The internet started freezing when I was surfing or streaming. Sometimes the entire computer froze, (mouse included) and I was forced to do a hard shut-down. Sometimes I would get a kernel panic too. Sometimes I could just put it to sleep for a second and then it would work again.

I called Bell a dozen times over 6 months, had the modem replaced with another black modem, same issue. Sometimes it freezes up my computer 3x or more a day. After a dozen calls and a second modem, Bell said it's not them.

So I called iCare a dozen times and dragged my desktop into Apple FOUR times. Because of the kernel panics, a lot of the experts agreed that it must be the computer. They ran every test under the sun, like 10x. The motherboard was replaced and engineers ran tests from California - they could not duplicate the problem.

I bought a UPS to see if it was something to do with the power levels coming into my house. Nope.

Now what?? Any suggestions? Could it be the modem model? What else am I missing here? Anyone else have these issues?

Would love some help or advice on this!

P.S… Some of the trouble-shooting already completed: All upgrades. A complete erase/reset of my computer. Logged in under another user. Logic board replaced.
 
Last edited:
This sounds like a hardware issue with your Mac. There is no way the modem would cause a KP like that. When you get the KP can you capture the Console log entry for the crash and post it up here? Maybe with that info we can help you troubleshoot.
 
Internet Freezing/Kernel Panic - iMac or Bell Issue?

Logic board has been replaced.

Here's a KP from May 12:

Interval Since Last Panic Report: 338702 sec
Panics Since Last Report: 1
Anonymous UUID: D5341D3D-45C7-4741-9A4F-AC667640CD29

Mon May 12 19:19:47 2014
Panic(CPU 0): Unresponsive processor, TLB state:0
RAX: 0x00000000ffffffff, RBX: 0x0000000000000003, RCX: 0xffffff800c568d10, RDX: 0xffffff800084305c
RSP: 0xffffff8060fc3c60, RBP: 0xffffff8060fc3c70, RSI: 0xffffff8060584000, RDI: 0xffffff804b7ef004
R8: 0x0000000000000001, R9: 0x0000000000000005, R10: 0x0000000000000001, R11: 0xffffff7f810410e2
R12: 0x0000000000002710, R13: 0x0000000000007000, R14: 0xffffff804b7ef004, R15: 0x0000000000000000
RFL: 0x0000000000000286, RIP: 0xffffff7f80bfbf47, CS: 0x0000000000000008, SS: 0x0000000000000010
Backtrace (CPU 0), Frame : Return Address
0xffffff800010bf50 : 0xffffff80002d76f6
0xffffff800010bf80 : 0xffffff80002d0322
0xffffff800010bfd0 : 0xffffff80002e40d2
0xffffff8060fc3c70 : 0xffffff7f80bd8d9a
0xffffff8060fc3ce0 : 0xffffff7f80c25dbb
0xffffff8060fc3d00 : 0xffffff7f80c25e45
0xffffff8060fc3d20 : 0xffffff7f80c26e37
0xffffff8060fc3d90 : 0xffffff7f80bd26ab
0xffffff8060fc3e20 : 0xffffff7f80bcae57
0xffffff8060fc3e60 : 0xffffff7f80bfd4d8
0xffffff8060fc3e80 : 0xffffff7f80bc8865
0xffffff8060fc3eb0 : 0xffffff7f80b84821
0xffffff8060fc3ed0 : 0xffffff800053be3c
0xffffff8060fc3f10 : 0xffffff800053b31f
0xffffff8060fc3f60 : 0xffffff800053afc5
0xffffff8060fc3fa0 : 0xffffff80002c8527
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.AirPort.Atheros9388(426.35.3)@0xffffff7f80b6d000->0xffffff7f80cb7fff
dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80800000
dependency: com.apple.iokit.IO80211Family(320.1)@0xffffff7f80b48000
dependency: com.apple.iokit.IONetworkingFamily(1.10)@0xffffff7f80b2e000
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.AirPort.Atheros9388(426.35.3)@0xffffff7f80b6d000->0xffffff7f80cb7fff
dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80800000
dependency: com.apple.iokit.IO80211Family(320.1)@0xffffff7f80b48000
dependency: com.apple.iokit.IONetworkingFamily(1.10)@0xffffff7f80b2e000

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: 5253023195054
unloaded kexts:
com.apple.driver.AppleUSBUHCI 4.2.5 (addr 0xffffff7f8132b000, size 0x65536) - last unloaded 81130372602
loaded kexts:
com.apple.filesystems.msdosfs 1.6.3 - last loaded 15434065532
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleBluetoothMultitouch 54.3
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.driver.AGPM 100.12.31
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AppleHDA 2.0.8f3
com.apple.driver.AppleMikeyDriver 2.0.8f3
com.apple.driver.AppleUpstreamUserClient 3.5.7
com.apple.driver.AppleMCCSControl 1.0.26
com.apple.driver.AudioAUUC 1.57
com.apple.kext.ATIFramebuffer 6.4.2
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0a1
com.apple.driver.AppleLPC
1.5.1
com.apple.driver.AppleBacklight 170.0.48
com.apple.kext.AppleSMCLMU 1.5.2d10
com.apple.ATIRadeonX3000 6.4.2
com.apple.driver.AppleIntelHDGraphics 6.4.2
com.apple.driver.AppleIntelSNBGraphicsFB 6.4.2
com.apple.driver.AirPort.Atheros9388 426.35.3
com.apple.iokit.SCSITaskUserClient 2.6.9
com.apple.driver.AppleUSBCardReader 2.6.1
com.apple.driver.AppleIRController 303.8
com.apple.iokit.IOAHCIBlockStorage 1.6.6
com.apple.BootCache 31.1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleFWOHCI 4.7.7
com.apple.driver.AppleUSBHub 4.2.5
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleAHCIPort 2.2.0
com.apple.iokit.AppleBCM5701Ethernet 3.0.8b2
com.apple.driver.AppleUSBEHCI 4.2.6
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.AppleIntelCPUPowerManagementClient 142.6.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.14
com.apple.driver.AppleIntelCPUPowerManagement 142.6.0
com.apple.driver.AppleBluetoothHIDKeyboard 141.5
com.apple.driver.AppleHIDKeyboard 141.5
com.apple.driver.IOBluetoothHIDDriver 2.4.5f3
com.apple.driver.AppleMultitouchDriver 207.11
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.DspFuncLib 2.0.8f3
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.iokit.IOFireWireIP 2.0.4
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.4.5f3
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.driver.AppleHDAController 2.0.8f3
com.apple.iokit.IOHDAFamily 2.0.8f3
com.apple.iokit.IOAudioFamily 1.8.3fc2
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.ApplePolicyControl 3.0.17
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.IOPlatformPluginFamily
4.7.0a1
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleGraphicsControl 3.0.17
com.apple.driver.AppleBacklightExpert 1.0.2
com.apple.driver.AppleSMC 3.1.0d5
com.apple.driver.AppleThunderboltEDMSink 1.1.3
com.apple.driver.AppleThunderboltEDMSource 1.1.3
com.apple.kext.ATI6000Controller 6.4.2
com.apple.kext.ATISupport 6.4.2
com.apple.iokit.IONDRVSupport 2.2.1
com.apple.iokit.IOGraphicsFamily 2.2.1
com.apple.iokit.IO80211Family 320.1
com.apple.driver.AppleThunderboltDPOutAdapter 1.5.9
com.apple.driver.AppleThunderboltDPInAdapter 1.5.9
com.apple.driver.AppleThunderboltDPAdapterFamily 1.5.9
com.apple.driver.AppleThunderboltPCIDownAdapter 1.2.1
com.apple.driver.BroadcomUSBBluetoothHCIController
2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController 2.4.5f3
com.apple.iokit.IOBluetoothFamily 2.4.5f3
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.9
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6.1
com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.9
com.apple.iokit.IOUSBMassStorageClass 2.6.7
com.apple.iokit.IOAHCISerialATAPI 1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.9
com.apple.iokit.IOUSBHIDDriver 4.2.5
com.apple.driver.AppleUSBMergeNub 4.2.5
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.driver.XsanFilter 402.1
com.apple.driver.AppleThunderboltNHI 1.3.2
com.apple.iokit.IOThunderboltFamily 1.7.4
com.apple.iokit.IOFireWireFamily 4.2.7
com.apple.iokit.IOUSBUserClient 4.2.4
com.apple.iokit.IOAHCIFamily 2.0.7
com.apple.iokit.IONetworkingFamily 1.10
com.apple.iokit.IOUSBFamily 4.2.6
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOHIDFamily 1.6.6
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.3
com.apple.driver.AppleACPIPlatform 1.3.6
com.apple.iokit.IOPCIFamily 2.6.8
com.apple.iokit.IOACPIFamily 1.3.0
Panic(CPU 1): Unresponsive processor, TLB state:0
RAX: 0x000000007e014360, RBX: 0xffffff800be7d880, RCX: 0x0000000000000000, RDX: 0x0000000000000001
RSP: 0xffffff80603ab710, RBP: 0xffffff80603ab760, RSI: 0x0000000000000004, RDI: 0xffffff800be0e000
R8: 0x0000000000000001, R9: 0x0000000000000000, R10: 0xffffff80603ab9f0, R11: 0xffffff7f8100936e
R12: 0xffffff800be94e00, R13: 0xffffff800085ae38, R14: 0x0000000000000104, R15: 0xffffff800be0e000
RFL: 0x0000000000000282, RIP: 0xffffff7f81304cbc, CS: 0x0000000000000008, SS: 0x0000000000000010
Backtrace (CPU 1), Frame : Return Address
0xffffff805aa28f50 : 0xffffff80002d76f6
0xffffff805aa28f80 : 0xffffff80002d0322
0xffffff805aa28fd0 : 0xffffff80002e40d2
0xffffff80603ab760 : 0xffffff7f8130676e
0xffffff80603ab7c0 : 0xffffff7f80ff7fd2
0xffffff80603ab880 : 0xffffff7f80ff8ae3
0xffffff80603ab9d0 : 0xffffff800053c225
0xffffff80603aba40 : 0xffffff7f80ffb3c0
0xffffff80603abae0 : 0xffffff7f810000ea
0xffffff80603abb60 : 0xffffff7f80fff386
0xffffff80603abbc0 : 0xffffff7f812ebce1
0xffffff80603abc10 : 0xffffff7f80ff7dc2
0xffffff80603abd10 : 0xffffff7f81305c76
0xffffff80603abdd0 : 0xffffff7f81306bab
0xffffff80603abe80 : 0xffffff7f8130726b
0xffffff80603abea0 : 0xffffff7f81300769
0xffffff80603abed0 : 0xffffff800053be3c
0xffffff80603abf10 : 0xffffff800053b31f
0xffffff80603abf60 : 0xffffff800053afc5
0xffffff80603abfa0 : 0xffffff80002c8527
Kernel Extensions in backtrace (with dependencies):
com.apple.iokit.IOUSBMassStorageClass(2.6.7)@0xffffff7f812e8000->0xffffff7f812f3fff
dependency: com.apple.iokit.IOUSBFamily(4.2.6)@0xffffff7f80ff2000
dependency: com.apple.iokit.IOStorageFamily(1.6.3)@0xffffff7f80e5d000
dependency: com.apple.iokit.IOSCSIArchitectureModelFamily(2.6.9)@0xffffff7f812bf000
com.apple.driver.AppleUSBEHCI(4.2.6)@0xffffff7f812fc000->0xffffff7f81313fff
dependency: com.apple.iokit.IOUSBFamily(4.2.6)@0xffffff7f80ff2000
dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80800000
com.apple.iokit.IOUSBFamily(4.2.6)@0xffffff7f80ff2000->0xffffff7f8102bfff
dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80800000
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.AppleUSBEHCI(4.2.6)@0xffffff7f812fc000->0xffffff7f81313fff
dependency: com.apple.iokit.IOUSBFamily(4.2.6)@0xffffff7f80ff2000
dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80800000

BSD process name corresponding to current thread: kernel_task
panic(cpu 2 caller 0xffffff80002251fb): "TLB invalidation IPI timeout: " "CPU(s) failed to respond to interrupts, unresponsive CPU bitmap: 0x3, NMIPI acks: orig: 0x0, now: 0x2"@/SourceCache/xnu/xnu-1504.15.3/osfmk/x86_64/pmap.c:2741
Backtrace (CPU 2), Frame : Return Address
0xffffff806020a250 : 0xffffff8000204d15
0xffffff806020a350 : 0xffffff80002251fb
0xffffff806020a3c0 : 0xffffff800022691f
0xffffff806020a440 : 0xffffff800021b545
0xffffff806020a4b0 : 0xffffff80002184b1
0xffffff806020a5b0 : 0xffffff80002188b3
0xffffff806020a5e0 : 0xffffff8000215883
0xffffff806020a610 : 0xffffff8000205dc9
0xffffff806020a630 : 0xffffff80004f6f56
0xffffff806020a660 : 0xffffff80004f6e91
0xffffff806020a690 : 0xffffff8000545c75
0xffffff806020a7b0 : 0xffffff8000545eb5
0xffffff806020a7e0 : 0xffffff7f808b4c6b
0xffffff806020a850 : 0xffffff7f80872434
0xffffff806020a880 : 0xffffff7f80854b17
0xffffff806020a8c0 : 0xffffff7f80852e76
0xffffff806020a8f0 : 0xffffff7f808860de
0xffffff806020a950 : 0xffffff7f80898e8b
0xffffff806020a990 : 0xffffff7f80893272
0xffffff806020a9f0 : 0xffffff7f8085a288
0xffffff806020aa20 : 0xffffff7f808912ec
0xffffff806020aa60 : 0xffffff7f8085e0bd
0xffffff806020ab40 : 0xffffff7f8085a948
0xffffff806020aba0 : 0xffffff80
Model: iMac12,1, BootROM IM121.0047.B1F, 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: Mass Storage, 0x058f (Alcor Micro, Corp.), 0x6387, 0xfa130000 / 6
USB Device: My Passport 0748, 0x1058 (Western Digital Technologies, Inc.), 0x0748, 0xfa120000 / 5
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8215, 0xfa111000 / 7
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfd110000 / 4
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 3
 
CLegros said:
Logic board has been replaced.

Here's a KP from May 12:
Click to expand...

I don't see any third party kexts running there that often cause these issues. My guess is still some sort of hardware problem. I would just take it back to Apple and let them have another go at it.

I have read about users with Applecare getting Apple to just replace the machine after repeated, unsuccessful repair attempts. Maybe that us something you could explore with Apple?
 
The last time I brought it in, they gave it back with nothing changed. They apparently ran tests dozens of times and could not find a problem.

I think you're right… it's time to ask for a new computer.
 
SaSaSushi said:
Are you running off of stock Apple RAM or did you add some? In my experience, the vast majority of kernel panics come down to bad RAM.
Click to expand...

This was happening with my daughter's iMac. She had the original factory RAM so I upgraded/maxed out her RAM with an upgrade kit from Crucial and all her problems went away. And the iMac runs like a new machine!
 
rambo47 said:
This was happening with my daughter's iMac. She had the original factory RAM so I upgraded/maxed out her RAM with an upgrade kit from Crucial and all her problems went away. And the iMac runs like a new machine!
Click to expand...

Oh, I wasn't saying that stock Apple RAM = no problems. I'm glad to hear you sorted out your daughter's iMac.

Memtest86 is a great way to rule out bad memory where Apple's own diagnostics say there are no issues.

I'm a big fan of Crucial/Micron as well. I am running 16GB of Crucial in addition to 16GB of stock Apple Elpida on my own iMac.
 
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