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A1418 / EMC 3069 / 2017 / 3,0 GHz Quad-Core i5, 3,4 GHz Quad-Core i5 oder 3,6 GHz Quad-Core i7 Prozessor. Erscheinungsdatum: 8. Juni 2017.

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Repeated kernel , kindly help.

panic(cpu 3 caller 0xffffff7fa3b28dfa): "virtual bool IOAccelDisplayMachine::display_mode_did_change(uint32_t): AMDRadeonAccelerator driver returns false" @IOAccelDisplayMachine.cpp:345

Panicked task 0xffffff9518ba1478: 9 threads: pid 150: WindowServer

Backtrace (CPU 3), panicked thread: 0xffffff8b7f4d70c8, Frame : Return Address

0xffffffeee008f460 : 0xffffff800e46e4fd

0xffffffeee008f4b0 : 0xffffff800e5c30a4

0xffffffeee008f4f0 : 0xffffff800e5b2b29

0xffffffeee008f550 : 0xffffff800e40e951

0xffffffeee008f570 : 0xffffff800e46e7dd

0xffffffeee008f660 : 0xffffff800e46de87

0xffffffeee008f6c0 : 0xffffff800ebdc34b

0xffffffeee008f7b0 : 0xffffff7fa3b28dfa

0xffffffeee008f7c0 : 0xffffff7fa3adf27c

0xffffffeee008f7f0 : 0xffffff7fa3b1acbb

0xffffffeee008f850 : 0xffffff7fa3c91bec

0xffffffeee008f990 : 0xffffff7fa3c7c237

0xffffffeee008fa20 : 0xffffff7fa3c87653

0xffffffeee008fa40 : 0xffffff7fa3c8c3fb

0xffffffeee008fad0 : 0xffffff7f8ef8ed30

0xffffffeee008fb00 : 0xffffff7fa3c82156

0xffffffeee008fb90 : 0xffffff800eae430c

0xffffffeee008fbf0 : 0xffffff800eb527a4

0xffffffeee008fc70 : 0xffffff800e56f1ab

0xffffffeee008fcc0 : 0xffffff800e44875a

0xffffffeee008fd60 : 0xffffff800e45f4a2

0xffffffeee008fdd0 : 0xffffff800e45fb27

0xffffffeee008fef0 : 0xffffff800e5983a3

0xffffffeee008ffa0 : 0xffffff800e40edb6

Kernel Extensions in backtrace:


dependency: com.apple.iokit.IOPCIFamily(2.9)[83895531-9463-398B-B769-64D4E50936C3]@0xffffff8010e91000->0xffffff8010ec2fff


dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[5DDA1128-3A4A-3746-889F-9877C5F938C8]@0xffffff800f9e2000->0xffffff800fa15fff

dependency: com.apple.iokit.IOGraphicsFamily(597)[718E01CF-8B05-3042-88F4-DE3441395D00]@0xffffff7fa3c71000->0xffffff7fa3c9ffff

dependency: com.apple.iokit.IOPCIFamily(2.9)[83895531-9463-398B-B769-64D4E50936C3]@0xffffff8010e91000->0xffffff8010ec2fff

dependency: com.apple.iokit.IOReportFamily(47)[491DDA55-D371-3A28-9A77-C28DB013D8AE]@0xffffff8010ed3000->0xffffff8010ed5fff

dependency: com.apple.iokit.IOSurface(336.50.1)[77B6FAFD-A20E-3EA7-BE72-B31AEF840BAF]@0xffffff8010ff5000->0xffffff801101dfff


dependency: com.apple.iokit.IOACPIFamily(1.4)[D342E754-A422-3F44-BFFB-DEE93F6723BC]@0xffffff8010a21000->0xffffff8010a22fff

dependency: com.apple.iokit.IOGraphicsFamily(597)[718E01CF-8B05-3042-88F4-DE3441395D00]@0xffffff7fa3c71000->0xffffff7fa3c9ffff

dependency: com.apple.iokit.IOPCIFamily(2.9)[83895531-9463-398B-B769-64D4E50936C3]@0xffffff8010e91000->0xffffff8010ec2fff

dependency: com.apple.kext.AMDSupport(4.1.2)[02F2B7D8-2D80-3F1A-A20D-DB671728E061]@0xffffff7fa2e6b000->0xffffff7fa2f2ffff

Process name corresponding to current thread (0xffffff8b7f4d70c8): WindowServer

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Not good! These are memory addresses in your crash report. You appear to have a VRAM error. This could be a simple cold solder joint of one of the VRAM chips or one is failing.

I would first see if the onboard diagnostics helps in ID’ing things. Restart your system and press the D startup key.

Let us know if it still failed and the error message

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hi, on board diagnostics does not show any errors .

recently upgraded ssd to hdd and have not anything else.


@bharathg22273 - Are you able to boot up with your original drive even externally?

I don’t see this as a drive type of issue. You did just replace the HDD with a SATA SSD correct? You also didn’t buy a Fusion Drive’d system did you? And left the caching SSD still inside?


Sorry, yes upgraded to SSD . Replaced it internally . Removed the old ssd. Didn't buy a fusion drive system


@bharathg22273 - do you have access to a hot air rework station? I would add some flux to the VRAM and GPU chip and reflow them. I bet you that has a good chance of fixing this.


yes , can get access . will try and keep you updated.

thank you so much for reply and help


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Any luck with the reflow of VRAM and GPU Chip ?
I have the exact same error message and my MBP only starts in safe mode.

Any feedback would be highly appreciated


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Bharath G wird auf ewig dankbar sein.

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