Mid 2011 iMac Graphics Problems with Yosemite

Look error códio that managed to glean some time . Does any Christ of God can help me ??? Apple ?????

Anonymous UUID: 43EDFF94-EAE0-C1D1-3622-E3C7F3B86960

Tue Nov 4 12:15:16 2014

*** Panic Report ***

panic(cpu 3 caller 0xffffff8004a1e80a): Kernel trap at 0xffffff7f86aea805, type 14=page fault, registers:

CR0: 0x000000008001003b, CR2: 0xffffff81d47d2c04, CR3: 0x0000000007c29000, CR4: 0x00000000000626e0

RAX: 0x0000000080000000, RBX: 0x0000000000000b02, RCX: 0x0000000000000b01, RDX: 0x0000000000000b01

RSP: 0xffffff81e317bb60, RBP: 0xffffff81e317bb80, RSI: 0xffffff81d47d0000, RDI: 0xffffff8023c69200

R8: 0xffffff81e317bc20, R9: 0xffffff81c316b7a0, R10: 0x0000000000000040, R11: 0xffffff81c315d000

R12: 0x000000000000000f, R13: 0x0000000000000000, R14: 0xffffff81d47d0000, R15: 0xffffff8023c69200

RFL: 0x0000000000010202, RIP: 0xffffff7f86aea805, CS: 0x0000000000000008, SS: 0x0000000000000010

Fault CR2: 0xffffff81d47d2c04, Error code: 0x0000000000000002, Fault CPU: 0x3

Backtrace (CPU 3), Frame : Return Address

0xffffff81e317b810 : 0xffffff800493a811

0xffffff81e317b890 : 0xffffff8004a1e80a

0xffffff81e317ba50 : 0xffffff8004a3a443

0xffffff81e317ba70 : 0xffffff7f86aea805

0xffffff81e317bb80 : 0xffffff7f86aeaf0d

0xffffff81e317bbe0 : 0xffffff7f86b005f6

0xffffff81e317bc00 : 0xffffff7f86aac39d

0xffffff81e317bc80 : 0xffffff7f86aac453

0xffffff81e317bcc0 : 0xffffff7f86a2f942

0xffffff81e317bcf0 : 0xffffff7f86a371c1

0xffffff81e317bd10 : 0xffffff7f86a3715d

0xffffff81e317bd40 : 0xffffff7f86a3c247

0xffffff81e317bdb0 : 0xffffff7f86ab0e86

0xffffff81e317bde0 : 0xffffff7f86a570ac

0xffffff81e317be20 : 0xffffff7f858d5232

0xffffff81e317be40 : 0xffffff7f858d51c5

0xffffff81e317be70 : 0xffffff7f86a43c1a

0xffffff81e317bea0 : 0xffffff7f86a581af

0xffffff81e317bed0 : 0xffffff7f86a557bb

0xffffff81e317bef0 : 0xffffff8004ed7162

0xffffff81e317bf40 : 0xffffff8004ed507d

0xffffff81e317bf80 : 0xffffff8004ed5146

0xffffff81e317bfb0 : 0xffffff8004a192c7

Kernel Extensions in backtrace:

com.apple.iokit.IOAcceleratorFamily2(156.4)[20DDCE61-E3EC-3CC1-8B79-170CEF2B603 A]@0xffffff7f86a2d000->0xffffff7f86a99fff

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f85124000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0 xffffff7f85a07000

com.apple.AMDRadeonX3000(1.2.8)[7BB9884C-E317-3B4E-93AC-559BD868B1A1]@0xffffff7 f86aa8000->0xffffff7f86e4ffff

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f85124000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0 xffffff7f85a07000

dependency: com.apple.iokit.IOAcceleratorFamily2(156.4)[20DDCE61-E3EC-3CC1-8B79-170CEF2B603 A]@0xffffff7f86a2d000

com.apple.iokit.IOSurface(97.0)[B4E2654D-4087-3875-9D59-E899A0A04F0E]@0xffffff7 f858d0000->0xffffff7f858e2fff

BSD process name corresponding to current thread: kernel_task

Mac OS version:

14A389

Kernel version:

Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64

Kernel UUID: 89E10306-BC78-3A3B-955C-7C4922577E61

Kernel slide: 0x0000000004600000

Kernel text base: 0xffffff8004800000

__HIB text base: 0xffffff8004700000

System model name: iMac12,1 (Mac-942B5BF58194151B)

System uptime in nanoseconds: 10982095071814

last loaded kext at 1310221074627: com.apple.filesystems.smbfs 3.0.0 (addr 0xffffff7f874ba000, size 389120)

last unloaded kext at 118966993205: com.apple.driver.AppleUSBUHCI 656.4.1 (addr 0xffffff7f85753000, size 65536)

loaded kexts:

com.apple.filesystems.smbfs 3.0.0

com.apple.filesystems.msdosfs 1.10

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.70

com.apple.driver.AGPM 100.14.37

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleBluetoothMultitouch 85.3

com.apple.iokit.IOBluetoothSerialManager 4.3.0f10

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleMikeyDriver 266.5

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.kext.AMDFramebuffer 1.2.8

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.driver.AppleIntelHD3000Graphics 10.0.0

com.apple.AMDRadeonX3000 1.2.8

com.apple.driver.AppleHDA 266.5

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleBacklight 170.4.12

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleHV 1

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleMCCSControl 1.2.10

com.apple.kext.AMD6000Controller 1.2.8

com.apple.driver.AppleSMCLMU 2.0.4d1

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.0f10

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleIntelSNBGraphicsFB 10.0.0

com.apple.driver.AppleIRController 327.5

com.apple.iokit.SCSITaskUserClient 3.7.0

com.apple.driver.AppleUSBCardReader 3.5.0

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 35

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.6.5

com.apple.driver.AppleUSBHub 705.4.1

com.apple.driver.AppleFWOHCI 5.5.2

com.apple.iokit.AppleBCM5701Ethernet 10.1.2b3

com.apple.driver.AirPort.Atheros40 700.74.5

com.apple.driver.AppleUSBEHCI 705.4.14

com.apple.driver.AppleAHCIPort 3.0.7

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

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.kext.triggers 1.0

com.apple.driver.AppleBluetoothHIDKeyboard 175.5

com.apple.driver.AppleHIDKeyboard 175.5

com.apple.driver.IOBluetoothHIDDriver 4.3.0f10

com.apple.driver.AppleMultitouchDriver 260.30

com.apple.iokit.IOSerialFamily 11

com.apple.iokit.IOSurface 97

com.apple.iokit.IOAcceleratorFamily2 156.4

com.apple.driver.DspFuncLib 266.5

com.apple.kext.OSvKernDSPLib 1.15

com.apple.iokit.IOAudioFamily 200.6

com.apple.vecLib.kext 1.2.0

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.kext.AMDSupport 1.2.8

com.apple.AppleGraphicsDeviceControl 3.7.21

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOFireWireIP 2.2.6

com.apple.driver.AppleSMC 3.1.9

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.driver.AppleThunderboltEDMSink 4.0.2

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.0f10

com.apple.iokit.IOBluetoothFamily 4.3.0f10

com.apple.driver.IOPlatformPluginFamily 5.8.0d49

com.apple.driver.AppleHDAController 266.5

com.apple.iokit.IOHDAFamily 266.5

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.0

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.IOUSBHIDDriver 705.4.0

com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.0

com.apple.iokit.IOUSBMassStorageClass 3.7.0

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.0

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.1

com.apple.iokit.IOFireWireFamily 4.5.6

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IO80211Family 700.52

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOAHCIFamily 2.7.0

com.apple.iokit.IOUSBFamily 705.4.14

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 389.1

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.corecrypto 1.0

com.apple.kec.Libm 1

com.apple.kec.pthread 1

Model: iMac12,1, BootROM IM121.0047.B1F, 4 processors, Intel Core i5, 2.7 GHz, 16 GB, SMC 1.71f22

Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB

Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1333 MHz, 0x01BA, 0x202020202020202020202020202020202020

Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1333 MHz, 0x01BA, 0x202020202020202020202020202020202020

AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P

Bluetooth: Version 4.3.0f10 14890, 3 services, 27 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: ST31000528AS, 1 TB

Serial ATA Device: HL-DT-STDVDRW GA32N

USB Device: FaceTime HD Camera (Built-in)

USB Device: Hub

USB Device: USB to Serial-ATA bridge

USB Device: BRCM2046 Hub

USB Device: Bluetooth USB Host Controller

USB Device: Hub

USB Device: IR Receiver

USB Device: Internal Memory Card Reader

Thunderbolt Bus: iMac, Apple Inc., 25.1

Please start your own thread - it is not fair to the OP and makes it too confusing.

Apple is not here and we are not God, we are just other users.

I believe this is the place where I can put my problem and that it can be analyzed ONLY by competent persons and who are willing to help. If I'm not mistaken the initial problem of this discussion is exactly the same as mine. Until you indicate a better read on the subject, it seems to me that you are not much inside. You do not know how this situation is causing me problems. Now, if you can not help me, do not bother me solve my problem, which is the problem of many people here.

I'm seeing the same graphics errors since updating from Mavericks to Yosemite (fresh install, Migration Assistant): small multicolored squares randomly appearing, disappearing all over the screen.

Mid-2011 iMac 27" 2.7gHz Core i5, 32GB RAM, 1TB Crucial MX550 SSD, AMD Radeon HD 6770M 512GB

Incredibly disappointing.

Is it just me or do the artifacts seen in a lot of the videos here look like the same problem as ours? Especially RC Concepcion's Making HDR at 3:44. Occurs in other videos as well.

http://kelbyone.com/lightroomcc/lightroomcc-resource-center.php

Apple released a graphical update for some iMac models. My not on the list of models compatible with this update but I did the installation manually and while my iMac is operating normally , with no deadlock so far. I will continue doing the tests , but I would advise anyone who has the same problem as I do the installation.

iMac Graphics Update

Hi all

Been following this thread as well as e.g. Imac display issues following Yosemite upgrade and hoping to find a solution for my problems with my mid 2011 iMac 27" equipped with Radeon 6770m.

Been having problems with the "pixels" since Yosemite and a temporary fix have been "reduce transparency" and "cleaning" the screen with a Finder window.

Since 10.10.3 and Photos the problems escalated and the Photos app caused my iMac not only having pixel problems but also crashed the entire UI.

I contacted AppleCare and produced log files as well as images and videos of the problem.

The iMac crashed after seconds to minutes after Photos app was started with pixelation problem occurred.

When I looked at the log files I found that it was only the UI that crashed, log files indicated that the machine was up and running "normally" besides the UI.

Events labeled as "GPU.RESTART" with event GPU Reset happened during the time from the freeze until I hard rebooted the machine.

I also found in the log files for Photos

Application Specific Signatures:

Graphics hardware encountered an error and was reset: 0x00000000

The respons I got from Apple after a couple of days was that it was a hardware problem with my iMac but the couldn't conclude whether it was the GPU or the logic board.

I contacted the local service point and the price estimates I got was approx

Sorry for the double posting, earlier posting can't be edited... 😟

Hi all

Been following this thread as well as e.g. Imac display issues following Yosemite upgrade and hoping to find a solution for my problems with my mid 2011 iMac 27" equipped with Radeon 6770m.

I have been having problems with the "pixels" since Yosemite and a temporary fix have been tips from here related to "reduce transparency" and "cleaning" the screen with a Finder window.

Since 10.10.3 and the Photos app the problems escalated. The Photos app caused my iMac not only having pixel problems but also crashed the entire UI.

I contacted AppleCare and produced log files as well as images and videos of the problem.

The iMac crashed after seconds to minutes after Photos app was started with pixelation problem occurred.

When I looked at the log files I found that it was only the UI that crashed, log files indicated that the machine was up and running "normally" besides the UI.

Events labeled as "GPU.RESTART" with event GPU Reset happened during the time from the freeze until I hard rebooted the machine.

2015-04-16 20:39:02,000 kernel[0]: Trying restart GPU ...

2015-04-16 20:39:09,000 kernel[0]: [1:0:0] GPU HangState 0x00000000, HangFlags 0x00000004: IndividualEngineHang 0, NonEngineBlockHang 0, FenceNotRetired 1, PerEngineReset 0, FullAsicReset 1

<Kernel_2015-04-16-203950_iMac.gpuRestart>

I also found in the log files for Photos

Application Specific Signatures:

Graphics hardware encountered an error and was reset: 0x00000000

Apple also asked me to install Lion and see if the problems occurred there as well. I installed a fresh version of Lion and after 24 hours the problem didn't occur there. I upgraded Lion to Yosemite as well as a fresh installation of Yosemite and as soon as I started the Photos app, the machine crashed.

The respons I got from Apple after a couple of days was that it was a hardware problem with my iMac but the couldn't conclude whether it was the GPU or the logic board. Since the Radeon 6770m was not covered by the extended warranty the advisor couldn't give me any additional help.

I contacted the local service point and the price estimates I got was approx $100 just for an estimate and then additional $300-350 if it was the GPU or $800-900 if it was the logic board.

I've been reading about the concept of "baking" faulty boards and having the to work again after a time in the oven, e.g. Re: Red and green square dots?

Since I had some time of this weekend I thought, why don't give it a try.

NOTE! It's highly risky and I can't recommend anyone doing this but I just wanted to share my experience.

I thought that if I destroy the GPU it's not worse than having it fixed through the local service point so why don't give it a try.

I opened the iMac and removed the logic board in order to gain access to the GPU. Removed the GPU and cleaned the board. During this time i pre-heated the oven to 170 (celsius). Put the board in for roughly 7 minutes and after that opened the oven door and let the board cool down before I moved it.

Applied new thermal paste and put the iMac back together. Started and kept my fingers crossed...

Everything seemed to be working as before with the difference that I could start and use the Photos app. I also removed "reduce transparency" so the machine is back to the "normal" state.

The machine has now been running more than 24*3 hours without any problems.

Again, not something that I can or would recommend but I just wanted to share my experience regarding this problem.

PS, thx everyone contributing to this thread and others related to this subject.

HHas anyone upgraded to El Capitan yet? It sounds like the graphics portion of the OS is completely rewritten. Perhaps it might be helpful?

That OS has not been publicly released; anyone who may have that information cannot discuss it due to their NDA.

That is true for developers but El Capitan is commonly available via torrents so anyone who wants to try the developer preview may do so. I've seen many posts from people who have done this. Perhaps we will have a brave soul afflicted with the graphics problem who will give it a try. If not we have the public preview coming up soon.

Not only developers, but public beta testers as well - read their NDA. And, such (torrent) downloads are illegal. The hosts regularly (and quickly) remove any posts which discuss a not yet publicly released OS version as it violates the ToU (except for facts made publicly available by Apple).

Hello everybody,
I am still having trouble locking with my iMac. Yesterday I made an Apple Hardware Test complete that returned me the following error code:

4MOT / 4/40000003 : HDD -1224

I researched this code and found nothing. I contacted Apple and they told me that this code can not represent anything (a flaw in AHT). Has anyone experienced this? Some say that this error may be related to the HDD and others say can be ram.

Googling the error code brought dozens of results; one is here:

https://discussions.apple.com/thread/6690116

It appears to be either your fan motor (MOT) or possibly the hard drive. Take it to your nearest Genius Bar for diagnostic tests - backup your hard drive first.

I have a mid-2010 i7 with 27 inch screen. I was happily using 10.68 and then was forced to upgrade to run some encryption software. Shortly thereafter I had major problems with pixelation that started at the top of the display and if I did not close down apps or reboot the computer became inoperable and required a hard reboot.

After many many hours of discussion with AppleCare & truly sincere efforts by at least two senior techs the problem remained.

What I observed was that almost all of the time the problem began after doing a search on Safari. If I closed down Safari specifically the pixelation went away.

I decided to use a different internet browser and after discussion with others chose Google Chrome. So far, a week later, an no pixelation and Chrome works a lot faster with no delays in immediately showing results of a search.

This is simple enough for others with this same problem to try.