![]() At no point would I get a startup chime or the three beeping sounds that can indicate a failed boot. Booting in safe mode would work relatively consistently, however, it would still sometimes crash and after crashes or trying to boot it regularly, it wouldn't turn on for a couple of times (usually two or three) even in safe mode with only the white indicator light repeatedly blinking three times in a row. After that I wasn't able to boot it normally anymore. RB_RPTR: 0xffffffff, RB_WPTR: 0xffffffffįollowing this the Macbook would turn on again and continued to work for about a day, however, at one point after putting it in sleep mode it failed to shutdown and ran for an hour in my laptop case running considerably hot. SPU Channel: Disabled, Idle, lastReadTimestamp 0x00000000, nextSubmitTimestamp 0x00000001 UVD Channel: Disabled, Idle, lastReadTimestamp 0x00000000, nextSubmitTimestamp 0x00000001 DMA Channel: Enabled, Idle, lastReadTimestamp 0x00002ccb, nextSubmitTimestamp 0x00002ccd PM4 Channel: Enabled, NotIdle, lastReadTimestamp 0x00129835, nextSubmitTimestamp 0x00129870 GPU HangFlags 0x00000004: AsicHangState 0x00000004, AsicResetRequirement 0x00000002ĪMDCaicosGraphicsAccelerator PCIe Device: State: ENABLEDĬonfiguration: deviceBits: 0x02006760, capabilityBits: 0x30940100 #2011 macbook pro logic board replacement mac os xOS Version: Mac OS X Version 10.13.4 (Build 17E199) Tailspin: /Library/Logs/DiagnosticReports/gpuRestart-151016.tailspin ![]() I later found a couple of Kernel Panic Reports that indicated a GPU restart 4 times with 10 seconds apart the heades of which looked like this: Tue Jun 19 15:10:16 2018 It worked fine for a while, but about a week ago it randomly shut down again. I send it in to a third party repair shop to replace the GPU. ![]() However, about a month ago it died again with the same symptoms. Since at the time Apple's repair extension program was still in place, I got the logic board replaced for free. In 2016, my Macbook first showed signs of a broken GPU. I have a 15" Macbook Pro from early 2011 and am trying to figure out whether the logic board is broken.
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