Level 1

8 points

Early 2009 24" iMac CONTINUALLY crashes...

The system freezes and/or restarts at least once a day as well (usually more like 3-10x), seems to be worst in Safari, but also happens on waking from sleep and anything that is graphic-related (I almost typed graphic-heavy, but even small graphic files/sites/apps that have previously not posed any problem suddenly are), or now also video--whether it is flash/html5 viewed directly online or video files played from the hard drive. Any ONE of these things is enough to either slow the system to a crawl (like a 2-page InDesign document or loading FaceBook timeline--small things that should not be problem weighing the system down) or causing automatic restart or system-wide freeze for which the only solution is to hold the power button and do a hard reboot.

While there were issues before installing Mountain Lion (a clean install, btw, specifically to try to eradicate this problem), it seems no better and progressively worse since the upgrade.

Besides the clean install, here's what I've tried:
-MacKeeper clean

-PRAM reset

-freeing up hard disk space (there is 275GB free on a 640 drive)

-reboot in safe mode

-shut down and unplug all peripherals and power, reboot

-using fewer programs (I work in graphic design, so I almost ALWAYS need Safari, Mail, InDesign, and usually Photoshop open. A lot, I know, but they aren't large files, and it's an almighty MAC after all, it should be fine--and forget about iTunes or iPhoto, opening them almost always causes a crash too... so no music while I work, at least not from iTunes)

Apple care ran out on this machine nearly a year ago, but really, these things should be more robust than a 4-year use-life...

I am not a computer tech, nor do I have the time or interest to pick apart panic logs to figure out what it all means. I just want it to work. Wasn't that Apple's motto for a while, "It just works"? Hmmm... not right. I should not have to either learn how to be a Genius or haul my 24" iMac to the nearest retail store AND pay for the repairs (if any) on a machine that is only 3.5 years old. That's ridiculous. That can't be my only 2 choices.

Anyway, here are 2 of the crash logs, one from today, and one from a couple days ago:

Hopefully someone with more knowledge than me can pick them apart and find the possible cause(s)

Interval Since Last Panic Report: 427943 sec

Panics Since Last Report: 1

Anonymous UUID: DC16069D-6FA8-2D52-0018-D9CD86CFACC5

Mon Apr 22 00:42:59 2013

panic(cpu 1 caller 0xffffff7f8e8287f2): NVRM[0/2:0:0]: Read Error 0x00001308: CFG 0x26b8b260 0x26b8b440 0x00005376, BAR0 0xd2000000 0xffffff808e2d5000 0x094700a1, D0, P2/4

Backtrace (CPU 1), Frame : Return Address

0xffffff808dff3490 : 0xffffff800e01d626

0xffffff808dff3500 : 0xffffff7f8e8287f2

0xffffff808dff35c0 : 0xffffff7f8e9253b9

0xffffff808dff3620 : 0xffffff7f8ec7d475

0xffffff808dff3660 : 0xffffff7f8e9b1f9d

0xffffff808dff3680 : 0xffffff7f8e9b1f3d

0xffffff808dff36b0 : 0xffffff7f8ec3fdfa

0xffffff808dff3750 : 0xffffff7f8ebf429e

0xffffff808dff3870 : 0xffffff7f8e9ad74d

0xffffff808dff39b0 : 0xffffff7f8e9ad2f8

0xffffff808dff3ab0 : 0xffffff7f8ebf6f4a

0xffffff808dff3b50 : 0xffffff7f8ebf72c2

0xffffff808dff3ce0 : 0xffffff7f8ec42d35

0xffffff808dff3e00 : 0xffffff7f8e94bfe8

0xffffff808dff3e40 : 0xffffff7f8e830567

0xffffff808dff3ef0 : 0xffffff800e4467a8

0xffffff808dff3f30 : 0xffffff800e4452aa

0xffffff808dff3f80 : 0xffffff800e4453d9

0xffffff808dff3fb0 : 0xffffff800e0b2977

Kernel Extensions in backtrace:

com.apple.NVDAResman(8.1)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f8e7cb 000->0xffffff7f8ead8fff

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f8e698000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[38C214C0-83C8-3594-8A4C-DC6AC3FEC163]@0xff ffff7f8e7b7000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[74E3E50F-E50A-3073-8C96-06F854292A91]@0 xffffff7f8e774000

com.apple.nvidia.nv50hal(8.1)[5F021999-8B18-3BD5-9B98-90617E638A63]@0xffffff7f8 eae6000->0xffffff7f8ee07fff

dependency: com.apple.NVDAResman(8.1.0)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f8e7 cb000

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f8e698000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

12D78

Kernel version:

Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64

Kernel UUID: 3EB7D8A7-C2D3-32EC-80F4-AB37D61492C6

Kernel slide: 0x000000000de00000

Kernel text base: 0xffffff800e000000

System model name: iMac9,1 (Mac-F2218FC8)

System uptime in nanoseconds: 91770475661231

last loaded kext at 25343798434334: com.apple.driver.AppleUSBCDC 4.1.23 (addr 0xffffff7f9031a000, size 16384)

last unloaded kext at 25406052891975: com.apple.driver.AppleUSBCDC 4.1.23 (addr 0xffffff7f9031a000, size 12288)

loaded kexts:

com.zeobit.kext.Firewall 2.3.3

com.zeobit.kext.AVKauth 2.3.3

net.telestream.driver.TelestreamAudio 1.0.5

com.StreamOutputser.chaoyueme 1

com.displaylink.driver.DisplayLinkDriver 2.0

com.apple.driver.AppleIntelProfile 97

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AppleBluetoothMultitouch 75.19

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AGPM 100.12.87

com.apple.iokit.IOBluetoothSerialManager 4.1.3f3

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AppleHDA 2.3.7fc4

com.apple.driver.AppleMikeyDriver 2.3.7fc4

com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.ApplePolicyControl 3.3.0

com.apple.GeForce 8.1.0

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleLPC 1.6.0

com.apple.driver.AppleBacklight 170.2.5

com.apple.driver.AppleUpstreamUserClient 3.5.10

com.apple.driver.AppleMCCSControl 1.1.11

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleIRController 320.15

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 34

com.apple.iokit.SCSITaskUserClient 3.5.5

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.3.1

com.apple.driver.AppleUSBHub 5.5.5

com.apple.driver.AppleFWOHCI 4.9.6

com.apple.driver.AirPort.Brcm4331 614.20.16

com.apple.driver.AppleAHCIPort 2.5.1

com.apple.nvenet 2.0.19

com.apple.driver.AppleUSBEHCI 5.5.0

com.apple.driver.AppleUSBOHCI 5.2.5

com.apple.driver.AppleEFINVRAM 1.7

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleACPIButtons 1.7

com.apple.driver.AppleSMBIOS 1.9

com.apple.driver.AppleACPIEC 1.7

com.apple.driver.AppleAPIC 1.6

com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0

com.apple.nke.applicationfirewall 4.0.39

com.apple.security.quarantine 2

com.apple.driver.AppleIntelCPUPowerManagement 196.0.0

com.apple.driver.AppleProfileTimestampAction 97

com.apple.driver.AppleProfileThreadInfoAction 97

com.apple.driver.AppleProfileRegisterStateAction 97

com.apple.driver.AppleProfileReadCounterAction 97

com.apple.driver.AppleProfileKEventAction 97

com.apple.driver.AppleProfileCallstackAction 97

com.apple.iokit.AppleProfileFamily 97

com.apple.driver.AppleBluetoothHIDKeyboard 170.2

com.apple.driver.AppleHIDKeyboard 170.2

com.apple.driver.IOBluetoothHIDDriver 4.1.3f3

com.apple.driver.AppleMultitouchDriver 235.29

com.apple.iokit.IOSerialFamily 10.0.6

com.apple.driver.DspFuncLib 2.3.7fc4

com.apple.driver.AppleSMBusPCI 1.0.11d0

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.iokit.IOAudioFamily 1.8.9fc11

com.apple.kext.OSvKernDSPLib 1.6

com.apple.iokit.IOSurface 86.0.4

com.apple.iokit.IOBluetoothFamily 4.1.3f3

com.apple.driver.AppleHDAController 2.3.7fc4

com.apple.iokit.IOHDAFamily 2.3.7fc4

com.apple.driver.AppleSMC 3.1.4d2

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.nvidia.nv50hal 8.1.0

com.apple.driver.IOPlatformPluginFamily 5.3.0d51

com.apple.driver.AppleGraphicsControl 3.3.0

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.AppleSMBusController 1.0.11d0

com.apple.NVDAResman 8.1.0

com.apple.iokit.IONDRVSupport 2.3.7

com.apple.iokit.IOGraphicsFamily 2.3.7

com.apple.kext.triggers 1.0

com.apple.iokit.IOUSBHIDDriver 5.2.5

com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.5

com.apple.iokit.IOUSBMassStorageClass 3.5.1

com.apple.driver.AppleUSBMergeNub 5.5.5

com.apple.driver.AppleUSBComposite 5.2.5

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.5.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5

com.apple.iokit.IOUSBUserClient 5.5.5

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IO80211Family 522.4

com.apple.iokit.IOAHCIFamily 2.3.1

com.apple.iokit.IONetworkingFamily 3.0

com.apple.iokit.IOUSBFamily 5.5.5

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleEFIRuntime 1.7

com.apple.iokit.IOHIDFamily 1.8.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 220.2

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 345

com.apple.iokit.IOStorageFamily 1.8

com.apple.driver.AppleKeyStore 28.21

com.apple.driver.AppleACPIPlatform 1.7

com.apple.iokit.IOPCIFamily 2.7.3

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

System Profile:

Model: iMac9,1, BootROM IM91.008D.B08, 2 processors, Intel Core 2 Duo, 2.93 GHz, 4 GB, SMC 1.37f3

Graphics: NVIDIA GeForce GT 130, NVIDIA GeForce GT 130, PCIe, 512 MB

Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020

Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8E), Broadcom BCM43xx 1.0 (5.106.98.100.16)

Bluetooth: Version 4.1.3f3 11349, 2 service, 18 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: WDC WD6400AAKS-40H2B0, 640.14 GB

Serial ATA Device: OPTIARC DVD RW AD-5670S

USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 4

USB Device: USB to ATA/ATAPI bridge, 0x059b (Iomega Corporation), 0x0475, 0x24300000 / 3

USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0x24100000 / 2

USB Device: MP620 series, 0x04a9 (Canon Inc.), 0x172f, 0x24130000 / 5

USB Device: IOGEAR External VGA, 0x17e9 (DisplayLink (UK) Ltd.), 0x0058, 0x26400000 / 2

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2

USB Device: PL-550-U, 0x056a (WACOM Co., Ltd.), 0x0034, 0x06200000 / 3

USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 4

And:

Wed Apr 24 12:55:55 2013

panic(cpu 0 caller 0xffffff7f876287f2): NVRM[0/2:0:0]: Read Error 0x00001308: CFG 0x881a9520 0x881c9e60 0x00000800, BAR0 0xd2000000 0xffffff80870cd000 0x094700a1, D0, P2/4

Backtrace (CPU 0), Frame : Return Address

0xffffff808683b490 : 0xffffff8006e1d626

0xffffff808683b500 : 0xffffff7f876287f2

0xffffff808683b5c0 : 0xffffff7f877253b9

0xffffff808683b620 : 0xffffff7f87a7d475

0xffffff808683b660 : 0xffffff7f877b1f9d

0xffffff808683b680 : 0xffffff7f877b1f3d

0xffffff808683b6b0 : 0xffffff7f87a3fdfa

0xffffff808683b750 : 0xffffff7f879f429e

0xffffff808683b870 : 0xffffff7f877ad74d

0xffffff808683b9b0 : 0xffffff7f877ad2f8

0xffffff808683bab0 : 0xffffff7f879f6f4a

0xffffff808683bb50 : 0xffffff7f879f72c2

0xffffff808683bce0 : 0xffffff7f87a42d35

0xffffff808683be00 : 0xffffff7f8774bfe8

0xffffff808683be40 : 0xffffff7f87630567

0xffffff808683bef0 : 0xffffff80072467a8

0xffffff808683bf30 : 0xffffff80072452aa

0xffffff808683bf80 : 0xffffff80072453d9

0xffffff808683bfb0 : 0xffffff8006eb2977

Kernel Extensions in backtrace:

com.apple.NVDAResman(8.1)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f875cb 000->0xffffff7f878d8fff

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f87498000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[38C214C0-83C8-3594-8A4C-DC6AC3FEC163]@0xff ffff7f875b7000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[74E3E50F-E50A-3073-8C96-06F854292A91]@0 xffffff7f87574000

com.apple.nvidia.nv50hal(8.1)[5F021999-8B18-3BD5-9B98-90617E638A63]@0xffffff7f8 78e6000->0xffffff7f87c07fff

dependency: com.apple.NVDAResman(8.1.0)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f875 cb000

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f87498000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

12D78

Kernel version:

Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64

Kernel UUID: 3EB7D8A7-C2D3-32EC-80F4-AB37D61492C6

Kernel slide: 0x0000000006c00000

Kernel text base: 0xffffff8006e00000

System model name: iMac9,1 (Mac-F2218FC8)

System uptime in nanoseconds: 8799847618954

last loaded kext at 4379189511215: com.zeobit.kext.AVKauth 2.3.3 (addr 0xffffff7f89117000, size 16384)

last unloaded kext at 4368043282836: com.zeobit.kext.AVKauth 2.3.3 (addr 0xffffff7f8909f000, size 12288)

loaded kexts:

com.zeobit.kext.AVKauth 2.3.3

com.zeobit.kext.Firewall 2.3.3

net.telestream.driver.TelestreamAudio 1.0.5

com.StreamOutputser.chaoyueme 1

com.displaylink.driver.DisplayLinkDriver 2.0

com.apple.driver.AppleIntelProfile 97

com.apple.driver.AppleBluetoothMultitouch 75.19

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AGPM 100.12.87

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AppleHDA 2.3.7fc4

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.iokit.IOBluetoothSerialManager 4.1.3f3

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.ApplePolicyControl 3.3.0

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleMikeyDriver 2.3.7fc4

com.apple.driver.AppleBacklight 170.2.5

com.apple.driver.AppleUpstreamUserClient 3.5.10

com.apple.driver.AppleMCCSControl 1.1.11

com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.driver.AppleLPC 1.6.0

com.apple.GeForce 8.1.0

com.apple.driver.AppleIRController 320.15

com.apple.iokit.SCSITaskUserClient 3.5.5

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 34

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.3.1

com.apple.driver.AppleAHCIPort 2.5.1

com.apple.driver.AppleUSBHub 5.5.5

com.apple.driver.AppleFWOHCI 4.9.6

com.apple.driver.AirPort.Brcm4331 614.20.16

com.apple.nvenet 2.0.19

com.apple.driver.AppleUSBEHCI 5.5.0

com.apple.driver.AppleUSBOHCI 5.2.5

com.apple.driver.AppleEFINVRAM 1.7

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleACPIButtons 1.7

com.apple.driver.AppleSMBIOS 1.9

com.apple.driver.AppleACPIEC 1.7

com.apple.driver.AppleAPIC 1.6

com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0

com.apple.nke.applicationfirewall 4.0.39

com.apple.security.quarantine 2

com.apple.driver.AppleIntelCPUPowerManagement 196.0.0

com.apple.driver.AppleProfileTimestampAction 97

com.apple.driver.AppleProfileThreadInfoAction 97

com.apple.driver.AppleProfileRegisterStateAction 97

com.apple.driver.AppleProfileReadCounterAction 97

com.apple.driver.AppleProfileKEventAction 97

com.apple.driver.AppleProfileCallstackAction 97

com.apple.iokit.AppleProfileFamily 97

com.apple.driver.AppleMultitouchDriver 235.29

com.apple.driver.AppleBluetoothHIDKeyboard 170.2

com.apple.driver.IOBluetoothHIDDriver 4.1.3f3

com.apple.driver.AppleHIDKeyboard 170.2

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 2.3.7fc4

com.apple.iokit.IOAudioFamily 1.8.9fc11

com.apple.kext.OSvKernDSPLib 1.6

com.apple.iokit.IOSurface 86.0.4

com.apple.iokit.IOSerialFamily 10.0.6

com.apple.iokit.IOBluetoothFamily 4.1.3f3

com.apple.driver.AppleSMC 3.1.4d2

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.AppleSMBusPCI 1.0.11d0

com.apple.driver.AppleGraphicsControl 3.3.0

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.AppleSMBusController 1.0.11d0

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.driver.IOPlatformPluginFamily 5.3.0d51

com.apple.driver.AppleHDAController 2.3.7fc4

com.apple.iokit.IOHDAFamily 2.3.7fc4

com.apple.nvidia.nv50hal 8.1.0

com.apple.NVDAResman 8.1.0

com.apple.iokit.IONDRVSupport 2.3.7

com.apple.iokit.IOGraphicsFamily 2.3.7

com.apple.driver.AppleUSBHIDMouse 175.8

com.apple.iokit.IOUSBHIDDriver 5.2.5

com.apple.driver.AppleHIDMouse 175.8

com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.5

com.apple.iokit.IOUSBMassStorageClass 3.5.1

com.apple.driver.AppleUSBMergeNub 5.5.5

com.apple.driver.AppleUSBComposite 5.2.5

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.5.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5

com.apple.iokit.IOAHCIFamily 2.3.1

com.apple.iokit.IOUSBUserClient 5.5.5

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IO80211Family 522.4

com.apple.iokit.IONetworkingFamily 3.0

com.apple.driver.NVSMU 2.2.9

com.apple.iokit.IOUSBFamily 5.5.5

com.apple.driver.AppleEFIRuntime 1.7

com.apple.iokit.IOHIDFamily 1.8.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 220.2

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 345

com.apple.iokit.IOStorageFamily 1.8

com.apple.driver.AppleKeyStore 28.21

com.apple.driver.AppleACPIPlatform 1.7

com.apple.iokit.IOPCIFamily 2.7.3

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

Any help is greatly appreciated 🙂

iMac, MacBook Air, iPhone 3GS, Mac OS X (10.6.1)

Posted on Apr 24, 2013 10:40 AM

46 replies

MichelPM

Level 10

81,535 points

Apr 24, 2013 2:13 PM in response to MBD999

Your iMac is still crashing?

What else was running besides Mail and Safari?

Were you trying to access something on Safari?

Just so we all can be sure that your iMac isn't overheating and freezing.

Search for, download and install iStat Pro and then report back with the temps it records.

Also, I 'll ask, when was the last time you cleared out/vacuumed out all of your iMac's vents, slots and ports?

You have to power down your iMac, disconnect everything and unplug your iMac.

Lay your iMac screen down on a heavy soft towel or blanket.

Use either a small electronics vacuum or a standard vacuum with hose and crevice tool attachment and slowly and carefully vacuum out all of the various vents, slots and ports around your iMac.

Then, reconnect everything, startup your iMac. Use iStat Pro temperature monitor and report your iMac's new temperatures here.

MBD999 Author

Level 1

8 points

Apr 24, 2013 4:34 PM in response to MichelPM

Hmmm... this could very well be a factor! It is warm to touch (though I don't know what the normal range would be... it does seem warmer than it *should* be)

*going to do this now*

I see it's a dashboard widget: I should note that I have only about 5 widgets currently, as whenever I switch to dashboard, it's i n c r e d i b l y s l o w ! I know that the widgets are web based and are attempting to get online, but shouldn't they already be? I dunno, I don't use dashboard that much...

I'll post the result in a few!

MBD999 Author

Level 1

8 points

Apr 24, 2013 5:14 PM in response to MichelPM

OK, it's pretty hot. Are these Celcius or farenheit?

HD: 53

CPU: 46

CPU heatsink: 43

Ambient: 27

GPU diode: 62

GPU heatsink: 59

HD bay: 55

Mem controller: 52

MichelPM

Level 10

81,535 points

Apr 24, 2013 6:01 PM in response to MBD999

These temps are in Celsius.

I think some of these are on the high side.

Others may disagree, but 62 and 59 degrees Celsius is on the high side for the GPU.

I feel the HD temps are a little warmer, too!

The CPU temps isn't bad, but would like to see a little lower, too!

Maybe you should do as I suggested to clear out all of the dust, lint and dirt from all of your iMac's venting, slots and ports.

Then reconnect everything, power up your iMac, do some tasks and report back the temps after the cleaning.

MBD999 Author

Level 1

8 points

Apr 24, 2013 6:07 PM in response to MichelPM

I did, those are the temps after cleaning--granted, it was not off for long to cool down...

As of now, HD is 56, CPU is 48-51 (2 checks, 2 numbers). I'm only running Safari and Mail right now, but I really need to get some work done in Adobe! Deadlines!

I also used to let it just sleep all the time without shutting down, but lately I've been shutting down overnight--hopefully that'll help temps too.

MichelPM

Level 10

81,535 points

Apr 24, 2013 6:13 PM in response to MBD999

Since vacuuming have you had any crashes?

Just keep an eye on the temps. They seem high to me, too!

Keep us informed.

MBD999 Author

Level 1

8 points

Apr 24, 2013 6:33 PM in response to MichelPM

no, not yet, although some of the precursors to crashes have already started--screen flashing, slowneess, double-cursor, it's weird cuz there's a whole host of telltale signs, but they have changed...

I'll try to check temps while in Adobe and/or when it's slowing up and quit programs to get it to cool down a bit, and I'll try to see if there's any correlation between the heat and the crashes.

Aside from vaccuuming out the vents and ports, and getting more RAM (so the HD doesn't have to work so hard), what can I do to lower the temps?

MichelPM

Level 10

81,535 points

Apr 24, 2013 7:14 PM in response to MBD999

What I have done is install a simple manual software internal fans control application.

I use SMC Fan Control. It's a simple app that is not complicated to use.

If you decide to install and try this, my recommendation is not to ramp up the fans up past 1600 RPMs or so.

I have my Mac set around the 1400-1500 RPM range.

Also, I run a small (6 inch diameter) desktop fan blowing on the back of the iMac's aluminum enclosure blowing toward on the middle to upper half of the back of the aluminum enclosure.

Good Luck!

MBD999 Author

Level 1

8 points

Apr 24, 2013 9:13 PM in response to MichelPM

OK, interesting. I'll give it all a try.

I'll also give it a couple days to notice any performance changes and post them either way.

Thanks a lot for your help 🙂

MBD999 Author

Level 1

8 points

Apr 25, 2013 1:07 PM in response to MichelPM

Well, it's still crashing, and JUST with Safari running.

I moved the kexts you highlighted way back into a desktop folder so that they wouldn't run anymore, restarted, and of course the displaylink driver made my third screendisappear. It's OK, I knew that would happen, but I found actually 3 drivers (I remember I had actually installed the one on the CD that came with the hardware, which was out of date, a second one from their site, which was also out of date, and finally found the right one on their mac downloads page...) so I figured I might as well remove all 3 drivers and reinstall ONLY the right one.

It froze up pretty quickly, in a new way, with my main screen and my minidisplay screen split into a large grid of black squares, white sqaures, and some regular desktop squares. Ironically, the displaylink screen showed a regular display. Normally I'd have done a hard reboot, but since it was bedtime anyway, I decided to leave it so that it would (eventually) reboot on its own I could get the crash report.

I also just checked disk utility, and my HD is fine, but the permissions found a couple things. One was in iTunes, which I remember coming up on previous permissions repairs... it says it repairs it when I click "repair", but when I run it again, it comes up again!

And the other:

SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired

Has also come up before.

Here's the crash report from last night as well:

Interval Since Last Panic Report: 17139 sec

Panics Since Last Report: 1

Anonymous UUID: DC16069D-6FA8-2D52-0018-D9CD86CFACC5

Thu Apr 25 08:44:01 2013

Panic(CPU 0): NMIPI for spinlock acquisition timeout, spinlock: 0xffffff80052b92f8, spinlock owner: 0, current_thread: 0xffffff8015843aa0, spinlock_owner_cpu: 0x0

RAX: 0x0000000000000000, RBX: 0xffffff8083ce8000, RCX: 0x7fffffffffffffff, RDX: 0x0000000000004000

RSP: 0xffffff8084adbd80, RBP: 0xffffff8084adbda0, RSI: 0x0000000000000001, RDI: 0xffffff800fdcbfe0

R8: 0x000000000000002f, R9: 0x0000000000000000, R10: 0x00000001027836d6, R11: 0x0000000000000246

R12: 0xffffff80052bebe8, R13: 0x0000000000000000, R14: 0xffffff800fdd9550, R15: 0xffffff80052bebe8

RFL: 0x0000000000000046, RIP: 0xffffff8004c31be2, CS: 0x0000000000000008, SS: 0x0000000000000000

Backtrace (CPU 0), Frame : Return Address

0xffffff8078516f50 : 0xffffff8004cbd721

0xffffff8078516f80 : 0xffffff8004cb74c3

0xffffff8078516fd0 : 0xffffff8004ccd698

0xffffff8084adbda0 : 0xffffff8004c2e872

0xffffff8084adbe20 : 0xffffff8004c2da0c

0xffffff8084adbe60 : 0xffffff8004c1b6ad

0xffffff8084adbea0 : 0xffffff8004cb84a3

0xffffff8084adbec0 : 0xffffff8004ccd7dc

BSD process name corresponding to current thread: DisplayLinkManag

Mac OS version:

12D78

Kernel version:

Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64

Kernel UUID: 3EB7D8A7-C2D3-32EC-80F4-AB37D61492C6

Kernel slide: 0x0000000004a00000

Kernel text base: 0xffffff8004c00000

System model name: iMac9,1 (Mac-F2218FC8)

System uptime in nanoseconds: 16208694089150

last loaded kext at 261290620392: com.apple.filesystems.msdosfs 1.8 (addr 0xffffff7f86eef000, size 65536)

last unloaded kext at 321917316116: com.apple.filesystems.msdosfs 1.8 (addr 0xffffff7f86eef000, size 57344)

loaded kexts:

com.displaylink.driver.DisplayLinkDriver 2.0

com.apple.driver.AppleIntelProfile 97

com.apple.driver.AppleBluetoothMultitouch 75.19

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AGPM 100.12.87

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.iokit.IOBluetoothSerialManager 4.1.3f3

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.ApplePolicyControl 3.3.0

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.GeForce 8.1.0

com.apple.driver.AppleBacklight 170.2.5

com.apple.driver.AppleUpstreamUserClient 3.5.10

com.apple.driver.AppleMCCSControl 1.1.11

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AppleHDA 2.3.7fc4

com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.driver.AppleMikeyDriver 2.3.7fc4

com.apple.driver.AppleLPC 1.6.0

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleIRController 320.15

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 34

com.apple.iokit.SCSITaskUserClient 3.5.5

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.3.1

com.apple.driver.AppleUSBHub 5.5.5

com.apple.driver.AppleFWOHCI 4.9.6

com.apple.driver.AirPort.Brcm4331 614.20.16

com.apple.driver.AppleAHCIPort 2.5.1

com.apple.nvenet 2.0.19

com.apple.driver.AppleEFINVRAM 1.7

com.apple.driver.AppleUSBEHCI 5.5.0

com.apple.driver.AppleUSBOHCI 5.2.5

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleACPIButtons 1.7

com.apple.driver.AppleSMBIOS 1.9

com.apple.driver.AppleACPIEC 1.7

com.apple.driver.AppleAPIC 1.6

com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0

com.apple.nke.applicationfirewall 4.0.39

com.apple.security.quarantine 2

com.apple.driver.AppleIntelCPUPowerManagement 196.0.0

com.apple.driver.AppleProfileTimestampAction 97

com.apple.driver.AppleProfileThreadInfoAction 97

com.apple.driver.AppleProfileRegisterStateAction 97

com.apple.driver.AppleProfileReadCounterAction 97

com.apple.driver.AppleProfileKEventAction 97

com.apple.driver.AppleProfileCallstackAction 97

com.apple.iokit.AppleProfileFamily 97

com.apple.driver.AppleMultitouchDriver 235.29

com.apple.driver.AppleBluetoothHIDKeyboard 170.2

com.apple.driver.IOBluetoothHIDDriver 4.1.3f3

com.apple.driver.AppleHIDKeyboard 170.2

com.apple.iokit.IOSurface 86.0.4

com.apple.iokit.IOSerialFamily 10.0.6

com.apple.iokit.IOBluetoothFamily 4.1.3f3

com.apple.driver.AppleSMC 3.1.4d2

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.AppleGraphicsControl 3.3.0

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.DspFuncLib 2.3.7fc4

com.apple.iokit.IOAudioFamily 1.8.9fc11

com.apple.kext.OSvKernDSPLib 1.6

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.3f3

com.apple.driver.AppleHDAController 2.3.7fc4

com.apple.iokit.IOHDAFamily 2.3.7fc4

com.apple.driver.AppleSMBusController 1.0.11d0

com.apple.driver.IOPlatformPluginFamily 5.3.0d51

com.apple.driver.AppleSMBusPCI 1.0.11d0

com.apple.nvidia.nv50hal 8.1.0

com.apple.NVDAResman 8.1.0

com.apple.iokit.IONDRVSupport 2.3.7

com.apple.iokit.IOGraphicsFamily 2.3.7

com.apple.kext.triggers 1.0

com.apple.driver.AppleUSBHIDMouse 175.8

com.apple.driver.AppleHIDMouse 175.8

com.apple.iokit.IOUSBHIDDriver 5.2.5

com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.5

com.apple.iokit.IOUSBMassStorageClass 3.5.1

com.apple.driver.AppleUSBMergeNub 5.5.5

com.apple.driver.AppleUSBComposite 5.2.5

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.5.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5

com.apple.iokit.IOUSBUserClient 5.5.5

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IO80211Family 522.4

com.apple.iokit.IOAHCIFamily 2.3.1

com.apple.iokit.IONetworkingFamily 3.0

com.apple.iokit.IOUSBFamily 5.5.5

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleEFIRuntime 1.7

com.apple.iokit.IOHIDFamily 1.8.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 220.2

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 345

com.apple.iokit.IOStorageFamily 1.8

com.apple.driver.AppleKeyStore 28.21

com.apple.driver.AppleACPIPlatform 1.7

com.apple.iokit.IOPCIFamily 2.7.3

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

panic(cpu 1 caller 0xffffff8004c29755): "Spinlock acquisition timed out: lock=0xffffff80052b92f8, lock owner thread=0xffffff8015843aa0, current_thread: 0xffffff8011a70aa0, lock owner active on CPU 0x0, current owner: 0x0"@/SourceCache/xnu/xnu-2050.22.13/osfmk/i386/locks_i386.c:363

Backtrace (CPU 1), Frame : Return Address

0xffffff807e59ee20 : 0xffffff8004c1d626

0xffffff807e59ee90 : 0xffffff8004c29755

0xffffff807e59eed0 : 0xffffff8004c3f21e

0xffffff807e59ef20 : 0xffffff8004cab4a9

0xffffff807e59ef50 : 0xffffff8004cbd75c

0xffffff807e59ef80 : 0xffffff8004cb74c3

0xffffff807e59efd0 : 0xffffff8004ccd698

0xffffff8084afadd0 : 0xffffff7f85742a91

0xffffff8084afaf30 : 0xffffff7f85742050

0xffffff8084afafb0 : 0xffffff7f854ea8fb

0xffffff8084afb140 : 0xffffff7f853c4bbc

0xffffff8084afb240 : 0xffffff7f853c2ef6

0xffffff8084afb280 : 0xffffff7f853c2ad6

0xffffff8084afb2d0 : 0xffffff7f853ad764

0xffffff8084afb380 : 0xffffff7f853da240

0xffffff8084afb580 : 0xffffff7f853db983

0xffffff8084afb650 : 0xffffff7f86411ee5

0xffffff8084afb780 : 0xffffff7f8641137b

0xffffff8084afb7c0 : 0xffffff7f86400c9c

0xffffff8084afb7f0 : 0xffffff7f86400d6b

0xffffff8084afb820 : 0xffffff7f863f0c5d

0xffffff8084afb8a0 : 0xffffff7f863bf2b8

0xffffff8084afb8d0 : 0xffffff7f863f291f

0xffffff8084afb910 : 0xffffff7f863be34f

0xffffff8084afba90 : 0xffffff7f863eee39

0xffffff8084afbb50 : 0xffffff7f863bcde8

0xffffff8084afbba0 : 0xffffff80050650c9

0xffffff8084afbbc0 : 0xffffff8005066670

0xffffff8084afbc20 : 0xffffff800506408f

0xffffff8084afbd70 : 0xffffff8004c984a1

0xffffff8084afbe80 : 0xffffff8004c20aed

0xffffff8084afbeb0 : 0xffffff8004c10448

0xffffff8084afbf00 : 0xffffff8004c1961b

0xffffff8084afbf70 : 0xffffff8004ca5dd6

0xffffff8084afbfb0 : 0xffffff8004ccdd43

Kernel Extensions in backtrace:

com.apple.NVDAResman(8.1)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f85377 000->0xffffff7f85684fff

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f85244000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[38C214C0-83C8-3594-8A4C-DC6AC3FEC163]@0xff ffff7f85363000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[74E3E50F-E50A-3073-8C96-06F854292A91]@0 xffffff7f85320000

com.apple.nvidia.nv50hal(8.1)[5F021999-8B18-3BD5-9B98-90617E638A63]@0xffffff7f8 5692000->0xffffff7f859b3fff

dependency: com.apple.NVDAResman(8.1.0)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f853 77000

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f85244000

com.apple.GeForce(8.1)[A15BB65E-3501-340F-87CB-2FD2BAD33E35]@0xffffff7f863ab000 ->0xffffff7f86477fff

dependency: com.apple.NVDAResman(8.1.0)[A26D2A3D-C06F-3A0F-BCFF-901A98C93C3D]@0xffffff7f853 77000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[38C214C0-83C8-3594-8A4C-DC6AC3FEC163]@0xff ffff7f85363000

dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f85244000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[74E3E50F-E50A-3073-8C96-06F854292A91]@0 xffffff7f85320000

BSD process name corresponding to current thread: WindowServer

Model: iMac9,1, BootROM IM91.008D.B08, 2 processors, Intel Core 2 Duo, 2.93 GHz, 4 GB, SMC 1.37f3

Graphics: NVIDIA GeForce GT 130, NVIDIA GeForce GT 130, PCIe, 512 MB

Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020

Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8E), Broadcom BCM43xx 1.0 (5.106.98.100.16)

Bluetooth: Version 4.1.3f3 11349, 2 service, 18 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: WDC WD6400AAKS-40H2B0, 640.14 GB

Serial ATA Device: OPTIARC DVD RW AD-5670S

USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 4

USB Device: USB to ATA/ATAPI bridge, 0x059b (Iomega Corporation), 0x0475, 0x24300000 / 3

USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0x24100000 / 2

USB Device: Apple Optical USB Mouse, apple_vendor_id, 0x0304, 0x24140000 / 6

USB Device: MP620 series, 0x04a9 (Canon Inc.), 0x172f, 0x24130000 / 5

USB Device: IOGEAR External VGA, 0x17e9 (DisplayLink (UK) Ltd.), 0x0058, 0x26400000 / 2

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2

USB Device: PL-550-U, 0x056a (WACOM Co., Ltd.), 0x0034, 0x06200000 / 3

USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 4

Paul_31

Level 6

14,172 points

Apr 25, 2013 1:24 PM in response to MBD999

To try to get to the bottom of the kernel panics, is it feasible for you to completely uninstall the DisplayLinkDriver and run with just the Mac and no additional screens for a day or so to see if the crashes stop.

I was looking at the DisplayLink site and they put a lot of emphasis on 10.8.3 being installed before the driver is added: http://www.displaylink.com/support/mac_downloads.php

I'm wondering if you completely deleted it and the crashes disappeared whether then re-installing a fresh copy of the OS followed by the DisplayLink Driver would work. Just throwing out ideas here.

MBD999 Author

Level 1

8 points

Apr 25, 2013 1:51 PM in response to Paul_31

Ya, anything's worth a try, but I've only had the displaylink device (and driver) for 2 weeks--the crashes had been happening (as frequently) for months before I acquired the third screen. I'm not sure what version of Snow Lepard I had when I initially installed the drivers, but as of the last driver install, I am running 10.8.3.

I had actually stopped using my iMac for a while because of the crashes last fall, working only on my Air, but my workflow has changed for a bigger project and I pretty much need the bigger screen (not just he additional ones, the main one too), so I went back to it a couple months ago. It was really snappy after a 5 month holiday, but after a couple weeks the freezes and crashes happened. THEN I installed Snow Leopard (clean install, hoping it'd help), THEN acquired the 3rd screen (cintiq tablet). The crashes don't seem much more frequent now than then, although the symptoms have changed.

But... I'll try without it, just to be thorough. 🙂

I appreciate everyone's help, and I'm not trying to be difficult, just giving accurate info to pin down the problem!

MBD999 Author

Level 1

8 points

Apr 25, 2013 3:36 PM in response to MBD999

Update:

So, no crash yet, per se, but I had to restart it anyway because of some weird graphics that made it impossible to use. It starts with the upper 3/4 of the screen flashing as if trying to refresh, then repeated and offset overlays of screen segments, and then a kind of sparkly pixelation (pics of the sparkly pixelation below). This is closer to the symptoms I was experiencing previously (before displaylink).

And this is all AFTER removing displayink hardware and drivers, runing ony Safari.

Could it be my internal graphics card that's baked and causing all this?

MichelPM

Level 10

81,535 points

Apr 25, 2013 5:21 PM in response to MBD999

This is definitely a graphic "chip" (GPU) issue.

I noted that the GPU temps were rather high.

This could be the cause of your iMac freezing or crashing.

The GPU maybe overheating.

Have you tried the fans control software to ramp the fans up to decrease the internal temps?

This may ( or not at this point) clear up the graphics problem.

MBD999 Author

Level 1

8 points

Apr 25, 2013 6:19 PM in response to MichelPM

Ya, just started running it... I wondered from the start if it was a graphics issue

Is the GPU replaceable? Is it worth replacing?

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Early 2009 24" iMac CONTINUALLY crashes...