I'm having an issue with a 2017 iMac - it doesn't boot - crashes about half way through Apple logo progress bar, often with some funny graphics displaying - e.g. half the screen is yellow.
I've reset NVRAM/PRAM/SMC, wiped hard disks and installed Big Sur, then upgrade to Monterey. Still I'm getting the same issue.
It does boot fine in safe mode...
I'm suspecting graphics card failure. I received these details on one failed start, can anybody help diagnose please?
panic(cpu 0 caller 0xffffff7facc1f244): "virtual bool IOAccelLegacyDisplayMachine::display_mode_did_change(uint32_t): AMDRadeonAccelerator driver returns false" @IOAccelLegacyDisplayMachine.cpp:267 Panicked task 0xffffff855221a3e0: 10 threads: pid 143: WindowServer Backtrace (CPU 0), panicked thread: 0xffffff855177fcd0, Frame : Return Address 0xffffffe0970a3600 : 0xffffff801489c00d 0xffffffe0970a3650 : 0xffffff80149f5d85 0xffffffe0970a3690 : 0xffffff80149e5763 0xffffffe0970a36e0 : 0xffffff801483ba60 0xffffffe0970a3700 : 0xffffff801489c3dd 0xffffffe0970a3820 : 0xffffff801489bb96 0xffffffe0970a3880 : 0xffffff8015118649 0xffffffe0970a38f0 : 0xffffff7facc1f244 0xffffffe0970a3900 : 0xffffff7facbc7eee 0xffffffe0970a3940 : 0xffffff7facc11180 0xffffffe0970a3980 : 0xffffff7facd74c70 0xffffffe0970a3ac0 : 0xffffff7facd5f195 0xffffffe0970a3b50 : 0xffffff7facd6a627 0xffffffe0970a3b70 : 0xffffff7facd6f3c9 0xffffffe0970a3bf0 : 0xffffff7f95614a80 0xffffffe0970a3c20 : 0xffffff7facd64fb8 0xffffffe0970a3cb0 : 0xffffff801502957c 0xffffffe0970a3d10 : 0xffffff80150968d3 0xffffffe0970a3d70 : 0xffffff801499f007 0xffffffe0970a3dc0 : 0xffffff8014876cf9 0xffffffe0970a3e50 : 0xffffff801488dd89 0xffffffe0970a3ee0 : 0xffffff80149caaf2 0xffffffe0970a3fa0 : 0xffffff801483c246 Kernel Extensions in backtrace: com.apple.iokit.IOGraphicsFamily(593.0)[D7EBF011-CEEF-3DF8-BD85-6CCE427455B7]@0xffffff7facd54000->0xffffff7facd82fff dependency: com.apple.iokit.IOPCIFamily(2.9)[5E1B0BE0-4B73-35F5-9126-EB05FBB8BAF5]@0xffffff80173ee000->0xffffff8017418fff com.apple.iokit.IOAcceleratorFamily2(462.4)[37BACF45-3C71-3411-97DB-E9AA07F37D0E]@0xffffff7facbc7000->0xffffff7facc30fff dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[BB7769F7-6389-3ABC-A6CF-2BC079FA7BF8]@0xffffff8015f6f000->0xffffff8015f90fff dependency: com.apple.iokit.IOGraphicsFamily(593)[D7EBF011-CEEF-3DF8-BD85-6CCE427455B7]@0xffffff7facd54000->0xffffff7facd82fff dependency: com.apple.iokit.IOPCIFamily(2.9)[5E1B0BE0-4B73-35F5-9126-EB05FBB8BAF5]@0xffffff80173ee000->0xffffff8017418fff dependency: com.apple.iokit.IOReportFamily(47)[81D7D4E0-A39C-332D-A4A4-AEBB70A9B6FF]@0xffffff801742a000->0xffffff801742cfff dependency: com.apple.iokit.IOSurface(302.9)[F42646DD-8963-3EA4-BAC3-2D0F36CDA224]@0xffffff801755d000->0xffffff8017579fff com.apple.kext.AMDFramebuffer(4.0.7)[0E573FD7-F1EF-3237-86D1-12C11C80C1FA]@0xffffff7f95613000->0xffffff7f95638fff dependency: com.apple.iokit.IOACPIFamily(1.4)[7EF77A11-B2B8-3CCF-9188-597E1279EDAC]@0xffffff8016f48000->0xffffff8016f49fff dependency: com.apple.iokit.IOGraphicsFamily(593)[D7EBF011-CEEF-3DF8-BD85-6CCE427455B7]@0xffffff7facd54000->0xffffff7facd82fff dependency: com.apple.iokit.IOPCIFamily(2.9)[5E1B0BE0-4B73-35F5-9126-EB05FBB8BAF5]@0xffffff80173ee000->0xffffff8017418fff dependency: com.apple.kext.AMDSupport(4.0.7)[61E40B4A-8B3E-3569-85EB-250CD91E8EB1]@0xffffff7fab20d000->0xffffff7fab2d7fff
Process name corresponding to current thread (0xffffff855177fcd0): WindowServer
Mac OS version: 21A559
Kernel version: Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 Kernel UUID: 19BD4E1B-0268-3EE0-BC66-91F035BC9429 KernelCache slide: 0x0000000014600000 KernelCache base: 0xffffff8014800000 Kernel slide: 0x0000000014610000 Kernel text base: 0xffffff8014810000 __HIB text base: 0xffffff8014700000 System model name: iMac18,2 (Mac-77F17D7DA9285301) System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 0
System uptime in nanoseconds: 11656145872 Last Sleep: absolute base_tsc base_nano Uptime : 0x00000002b6c2ae6a Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000 Wake : 0x0000000000000000 0x0000000e05726742 0x0000000000000000 Zone info: Foreign : 0xffffff802afb3000 - 0xffffff802afc0000 Native : 0xffffff804309e000 - 0xffffffa04309e000 Readonly : 0 - 0 Metadata : 0xffffffe7be2c3000 - 0xffffffe7de444000 Bitmaps : 0xffffffe7de444000 - 0xffffffe7e4444000 last started kext at 9537884636: >AudioAUUC 1.70 (addr 0xffffff7facac5000, size 12288) loaded kexts:
AudioAUUC 1.70 !APlatformEnabler 2.7.0d0 AGPM 125 X86PlatformShim 1.0.0 @fileutil 20.036.15 @filesystems.autofs 3.0 !AUpstreamUserClient 3.6.8 @kext.AMDFramebuffer 4.0.7 @kext.AMDRadeonX4000 4.0.7 !AHDAHardwareConfigDriver 283.15 !AHDA 283.15 !AGFXHDA 100.1.434 @kext.AMDRadeonServiceManager 4.0.7 !AThunderboltIP 4.0.3 @kext.AMD9500!C 4.0.7 !A!IKBLGraphics 18.0.2 eficheck 1 AGDCBacklightControl 6.4.9 !ABacklight 180.3 !AMCCSControl 1.14 !A!IPCHPMC 2.0.1 !AGraphicsDevicePolicy 6.4.9 ACPI_SMC_PlatformPlugin 1.0.0 @UVCService 1 @AGDCPluginDisplayMetrics 6.4.9 !ASMCLMU 212 pmtelemetry 1 |IOUserEthernet 1.0.1 usb.!UUserHCI 1 !AHV 1 !ADiskImages2 126.40.1 !A!ISlowAdaptiveClocking 4.0.0 !AFIVRDriver 4.1.0 !A!IKBLGraphicsFramebuffer 18.0.2 !ATopCaseHIDEventDriver 5010.1 !UTopCaseDriver 5010.1 !AFileSystemDriver 3.0.1 @filesystems.tmpfs 1 @filesystems.lifs 1 @filesystems.hfs.kext 582.40.4 @BootCache 40 @!AFSCompression.!AFSCompressionTypeZlib 1.0.0 @!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1 @filesystems.apfs 1933.41.2 !ASDXC 3.1.1 AirPort.BrcmNIC 1400.1.1 |!ABCM5701Ethernet 11.0.0 !AAHCIPort 351 @private.KextAudit 1.0 !AACPIButtons 6.1 !ARTC 2.0.1 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7 @!ASystemPolicy 2.0.0 @nke.applicationfirewall 402 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 @Dont_Steal_Mac_OS_X 7.0.0 @kec.!AEncryptedArchive 1 @kext.triggers 1.0 @kext.AMDRadeonX4200HWLibs 1.0 @kext.AMDRadeonX4000HWServices 4.0.7 DspFuncLib 283.15 @kext.OSvKernDSPLib 529 !AThunderboltEDMSink 5.0.3 !AThunderboltDPOutAdapter 8.5.0 @kext.AMDSupport 4.0.7 !UAudio 412.8 !AAudioClockLibs 100.9.1 !ABacklightExpert 1.1.0 |IONDRVSupport 593 !AGraphicsControl 6.4.9 IOPlatformPluginLegacy 1.0.0 X86PlatformPlugin 1.0.0 IOPlatformPlugin!F 6.0.0d8 !AHDA!C 283.15 |IOHDA!F 283.15 |IOAudio!F 300.10 @vecLib.kext 1.2.0 !ASMBus!C 1.0.18d1 !ASMBusPCI 1.0.14d1 |IO!BSerialManager 9.0.0 |IO!BPacketLogger 9.0.0 |IO!BHost!CUSBTransport 9.0.0 |IO!BHost!CUARTTransport 9.0.0 |IO!BHost!CTransport 9.0.0 IO!BHost!CPCIeTransport 9.0.0 |IOAVB!F 1010.2 @plugin.IOgPTPPlugin 1000.11 |IOEthernetAVB!C 1.1.0 |CSR!BHost!CUSBTransport 9.0.0 |Broadcom!BHost!CUSBTransport 9.0.0 |Broadcom!B20703USBTransport 9.0.0 !AIPAppender 1.0 @!AGPUWrangler 6.4.9 |IOSlowAdaptiveClocking!F 1.0.0 |IOAccelerator!F2 462.4 @!AGraphicsDeviceControl 6.4.9 |IOGraphics!F 593 !AHS!BDriver 5010.1 IO!BHIDDriver 9.0.0 !AMultitouchDriver 5400.25 !AInputDeviceSupport 5400.30 !AHIDKeyboard 228 usb.IOUSBHostHIDDevice 1.2 usb.cdc 5.0.0 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 !AThunderboltPCIDownAdapter 4.1.1 !AThunderboltDPInAdapter 8.5.0 !AThunderboltDPAdapter!F 8.5.0 !AHPM 3.4.4 !A!ILpssI2C!C 3.0.60 !A!ILpssI2C 3.0.60 !A!ILpssDmac 3.0.60 !ABSDKextStarter 3 |IOSurface 302.9 @filesystems.hfs.encodings.kext 1 !AXsanScheme 3 !AThunderboltNHI 7.2.8 |IOThunderbolt!F 9.3.2 |IOAHCIBlock!S 333 |IO80211!FLegacy 1200.12.2b1 |IOSkywalk!F 1.0 corecapture 1.0.4 mDNSOffloadUserClient 1.0.1b8 |IOAHCI!F 295 !A!ILpssGspi 3.0.60 usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2 usb.!UHostPacketFilter 1.0 |IOUSB!F 900.4.2 !AEFINVRAM 2.1 !AEFIRuntime 2.1 |IOSMBus!F 1.1 |IOHID!F 2.0.0 |IOTimeSync!F 1000.11 |IONetworking!F 3.4 DiskImages 493.0.0 |IO!B!F 9.0.0 |IOReport!F 47 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1 !ASSE 1.0 !AKeyStore 2 !UTDM 532.40.7 |IOUSBMass!SDriver 209.40.6 |IOSCSIBlockCommandsDevice 452.30.4 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 452.30.4 !AMobileFileIntegrity 1.0.5 $!AImage4 4.1.0 @kext.CoreTrust 1 !AFDEKeyStore 28.30 !AEffaceable!S 1.0 !ACredentialManager 1.0 KernelRelayHost 1 |IOUSBHost!F 1.2 !UHostMergeProperties 1.2 usb.!UCommon 1.0 !ABusPower!C 1.0 !ASEPManager 1.0.1 IOSlaveProcessor 1 !AACPIPlatform 6.1 !ASMC 3.1.9 |IOPCI!F 2.9 |IOACPI!F 1.4 watchdog 1 @kec.pthread 1 @kec.Libm 1 @kec.corecrypto 12.0