Hi David,
You're very lucky. I've talked to someone from executive relations. He said that this model is vintage. They can't fix the problem. The advice is to buy a new iMac. On many news sites they say it's a software problem. This problem is caused by a faulty kernel. Apple Hardware Test reports by both the simple as the extended test that everything works fine. I've upgraded Techtool to work with Yosemite. I've ran Techtool and no problem shows up. And still I have kernel panics and freezes.
Anonymous UUID: 3B224808-6641-DAE2-40A5-CCD0FFB02629
Tue Jun 9 10:49:32 2015
*** Panic Report ***
panic(cpu 0 caller 0xffffff7f891a4bb4): NVRM[0/2:0:0]: Read Error 0x0061002c: CFG 0x00000000 0x0c07001b 0x00000140, BAR0 0xd2000000 0xffffff81142fd000 0x094700a1, D0, P1/4
Backtrace (CPU 0), Frame : Return Address
0xffffff8111993bc0 : 0xffffff800852bda1
0xffffff8111993c40 : 0xffffff7f891a4bb4
0xffffff8111993d00 : 0xffffff7f8926e18e
0xffffff8111993d40 : 0xffffff7f8944591c
0xffffff8111993d60 : 0xffffff7f8924254b
0xffffff8111993d80 : 0xffffff7f892e5a43
0xffffff8111993e00 : 0xffffff7f8918cc4e
0xffffff8111993ec0 : 0xffffff7f8915a845
0xffffff8111993f00 : 0xffffff800855e759
0xffffff8111993fb0 : 0xffffff80086125b7
Kernel Extensions in backtrace:
com.apple.nvidia.classic.NVDAResmanTesla(10.0)[796AE430-39FB-3255-8161-D52AFA28 EE2B]@0xffffff7f89154000->0xffffff7f893bdfff
dependency: com.apple.iokit.IOPCIFamily(2.9)[52E715FC-521D-3869-B2EA-5228FA4BEA34]@0xffffff 7f88d24000
dependency: com.apple.iokit.IONDRVSupport(2.4.1)[C0B8A85D-B32A-3F24-B4FC-B62B3BBF9E57]@0xff ffff7f89144000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[82EAD591-67E3-39CB-A232-A8095CA30E92]@0 xffffff7f890fd000
com.apple.nvidia.classic.NVDANV50HalTesla(10.0)[7FE40648-F15F-3E18-91E2-FDDDF4C DA355]@0xffffff7f893c8000->0xffffff7f89671fff
dependency: com.apple.nvidia.classic.NVDAResmanTesla(10.0.0)[796AE430-39FB-3255-8161-D52AFA 28EE2B]@0xffffff7f89154000
dependency: com.apple.iokit.IOPCIFamily(2.9)[52E715FC-521D-3869-B2EA-5228FA4BEA34]@0xffffff 7f88d24000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
14D136
Kernel version:
Darwin Kernel Version 14.3.0: Mon Mar 23 11:59:05 PDT 2015; root:xnu-2782.20.48~5/RELEASE_X86_64
Kernel UUID: 4B3A11F4-77AA-3D27-A22D-81A1BC5B504D
Kernel slide: 0x0000000008200000
Kernel text base: 0xffffff8008400000
__HIB text base: 0xffffff8008300000
System model name: iMac9,1 (Mac-F2218FC8)
System uptime in nanoseconds: 89730406033798
last loaded kext at 79745949255660: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f8acc3000, size 20480)
last unloaded kext at 79806012475465: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f8acc3000, size 16384)
loaded kexts:
com.apple.filesystems.smbfs 3.0.1
com.apple.filesystems.afpfs 11.0
com.apple.nke.asp-tcp 8.0.0
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.driver.AudioAUUC 1.70
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 110.19.5
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.3.4f4
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleHDA 272.18
com.apple.driver.AppleUpstreamUserClient 3.6.1
com.apple.GeForceTesla 10.0.0
com.apple.driver.AppleMikeyDriver 272.18
com.apple.driver.AppleLPC 1.7.3
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleHV 1
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleBacklight 170.7.4
com.apple.driver.AppleMCCSControl 1.2.11
com.apple.driver.AppleIRController 327.5
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 36
com.apple.iokit.SCSITaskUserClient 3.7.5
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.7.1
com.apple.driver.AppleUSBHub 705.4.2
com.apple.driver.AppleFWOHCI 5.5.2
com.apple.driver.AppleAHCIPort 3.1.2
com.apple.driver.AppleUSBEHCI 705.4.14
com.apple.driver.AirPort.Brcm4331 800.20.24
com.apple.nvenet 2.0.22
com.apple.driver.AppleUSBOHCI 656.4.1
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 3.1
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 3.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0
com.apple.nke.applicationfirewall 161
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
com.apple.security.SecureRemotePassword 1.0
com.apple.driver.AppleBluetoothHIDKeyboard 176.2
com.apple.driver.AppleHIDKeyboard 176.2
com.apple.driver.IOBluetoothHIDDriver 4.3.4f4
com.apple.driver.AppleMultitouchDriver 263.9.1
com.apple.AppleGraphicsDeviceControl 3.10.22
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 11
com.apple.driver.DspFuncLib 272.18
com.apple.kext.OSvKernDSPLib 1.15
com.apple.nvidia.classic.NVDANV50HalTesla 10.0.0
com.apple.driver.AppleHDAController 272.18
com.apple.iokit.IOHDAFamily 272.18
com.apple.iokit.IOAudioFamily 203.3
com.apple.vecLib.kext 1.2.0
com.apple.nvidia.classic.NVDAResmanTesla 10.0.0
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.iokit.IOSurface 97.4
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.iokit.IOBluetoothFamily 4.3.4f4
com.apple.iokit.IOUSBUserClient 705.4.0
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.9.1d7
com.apple.driver.AppleBacklightExpert 1.1.0
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.AppleSMBusController 1.0.13d1
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOUSBHIDDriver 705.4.0
com.apple.driver.CoreStorage 471.20.7
com.apple.driver.AppleUSBMergeNub 705.4.0
com.apple.driver.AppleUSBComposite 705.4.9
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.5
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5
com.apple.iokit.IOFireWireFamily 4.5.6
com.apple.iokit.IOAHCIFamily 2.7.5
com.apple.iokit.IO80211Family 730.60
com.apple.iokit.IONetworkingFamily 3.2
com.apple.driver.NVSMU 2.2.9
com.apple.iokit.IOUSBFamily 720.4.4
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.DiskImages 396
com.apple.iokit.IOStorageFamily 2.0
com.apple.iokit.IOReportFamily 31
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 3.1
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.Libm 1
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Model: iMac9,1, BootROM IM91.008D.B08, 2 processors, Intel Core 2 Duo, 3.06 GHz, 8 GB, SMC 1.37f3
Graphics: NVIDIA GeForce GT 130, NVIDIA GeForce GT 130, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x0198, 0x393930353432382D3138322E4130304C4620
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x0198, 0x393930353432382D3138322E4130304C4620
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8E), Broadcom BCM43xx 1.0 (5.106.98.100.24)
Bluetooth: Version 4.3.4f4 15601, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: WDC WD1001FALS-40K1B0, 1 TB
Serial ATA Device: OPTIARC DVD RW AD-5670S
USB Device: Built-in iSight
USB Device: iPhone
USB Device: IR Receiver
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:
It is unpredictable when this problem occurs. The problem always shows up when it's not the right moment. I think more people have this problem seeing that customers posting to this thread up to 2015. What can Apple do to fix this problem? Since this is a common problem and no parts are available, forcing customers to buy a new iMac is unacceptable. I've talked to a repair center for Apple products and they said to me some things I hope they're not true. My legal expert is looking into it.
Don't get me wrong. I think Apple still is the best manufacturer to buy products from. I only think they underestimate this problem. I'm still hoping this issue is getting fixed.
I'm glad you've got this problem solved David.