s.illes

Q: imac crashes with gpu reset since ElCap

Hi guys,

 

Every since I upgraded to El Captain, my iMac doesn't last longer the 5-10 minutes. It keeps crashing with a grey or black screen, mostly while watching youtube.

In Console I found lot's of crashes with "GPU reset":

Wed Jan 27 19:34:24 2016

 

 

Event:               GPU Reset

Date/Time:           Wed Jan 27 19:34:24 2016

Application:        

Path:               

OS Version:          Mac OS X Version 10.11.3 (Build 15D21)

Graphics Hardware:   AMD Radeon HD 6970M

Signature:           0

 

 

Report Data:

 

 

GPURestartReportStart

------------------------

Hung Channels: PM4

------------------------

[00] AccelChannel: PM4

Pending Command from   : UnknownCtx

PendingCommandTimestamp: 0x00000001, TotalDWords: 0x00000415, GART Offset=0x0000000040080000, stamp_idx=0, estamp=0x00000001

PendingCommandStart:

PendingCommandEnd

------------------------

[00] PM4 HWChannel  : Enabled, NotIdle

LastReadTimestamp   : 0x00000000

NextSubmitTimestamp : 0x00000002

[PM4, ts:0x00000001]: No semaphore wait

[PM4, ts:0x00000001]: semaphore  signal: 0xffffff8049d66e00

HWSemaphore 0xffffff8049d66e00 Signal Event: [PM4 channel[0] TS:0x00000001 lastReadTS:0x00000000]

------------------------

GPU HangFlags 0x00000006: AsicHangState 0x00000006, AsicResetRequirement 0x00000002

IndividualEngineHang: 0

NonEngineBlockHang  : 1

FenceNotRetired     : 1

PerEngineReset      : 0

FullAsicReset       : 1

HangEngineBitmap    : 0x00000000

------------------------

AMDBartsGraphicsAccelerator PCIe Device: [1:0:0] State: ENABLED

Configuration: deviceBits: 0x00816720, capabilityBits: 0x30940100

TotalVideoRAMBytes: 0x0000000040000000 (1073741824)

------------------------

[00]  PM4 Engine : Enabled,  NotIdle

[00]  PM4 Channel: Enabled,  NotIdle

------------------------

[01] SDMA Engine : Enabled,  Idle

[01]  DMA Channel: Enabled,  Idle

------------------------

[03]  UVD Engine : Disabled, Idle

[02]  UVD Channel: Disabled, Idle

------------------------

[04]  SPU Engine : Disabled, Idle

[03]  SPU Channel: Disabled, Idle

------------------------

: ** GPU Debug Info Start **

: 0x00006720 : 0x00000092 : 0x00000001 : 0x00000018 : 0x0000a880 : 0x00000001 : 0x00000001 : 0x00006720

...


full log can be found here:

https://drive.google.com/file/d/0B0vWxunrQlxuLXRHd184dlhUZTQ/view

 

if i'm luck it restart, but sometimes i get stuck on a grey boot screen

 

I tried:

- reset PRAM

- force disk check

- unplug and wait for 30 seconds.

 

I'm running out of ideas

iMac, OS X El Capitan (10.11.3)

Posted on Jan 31, 2016 4:58 AM

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Q: imac crashes with gpu reset since ElCap

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  • Helpful answers

  • by Mike Sombrio,Apple recommended

    Mike Sombrio Mike Sombrio Jan 31, 2016 5:49 AM in response to s.illes
    Level 6 (17,233 points)
    Apple Watch
    Jan 31, 2016 5:49 AM in response to s.illes
  • by Linc Davis,Apple recommended

    Linc Davis Linc Davis Jan 31, 2016 7:08 AM in response to s.illes
    Level 10 (207,963 points)
    Applications
    Jan 31, 2016 7:08 AM in response to s.illes
  • by s.illes,

    s.illes s.illes Jan 31, 2016 2:22 PM in response to Linc Davis
    Level 1 (1 points)
    Jan 31, 2016 2:22 PM in response to Linc Davis

    hmm thanks good to know, I'm not sure it's hardware issue coz Yosemite was fine, probably I'll wait for an upgrade or downgrade to Yosemite.

     

    also I'm outside of the 4 years windows so i guess i'd have to pay for it. Does anyone know how much would it cost to replace the video card?

  • by Edward Judge,

    Edward Judge Edward Judge Feb 7, 2016 10:18 AM in response to s.illes
    Level 1 (5 points)
    Feb 7, 2016 10:18 AM in response to s.illes

    I have a mid-2011 27" iMac and am experiencing similar problems. Mine was fine for a while on ElCap but in the last 3 weeks I've had many blue screens where everything freezes and quite a few instances where the computer restarts.

     

    I had it in to a local Apple store and the said they couldn't replicated the problem. However, if it persists, they said they would replace the video card under that replacement program that was referenced in an earlier post, even though the machine is out of warranty.

     

    Just starting to do some troubleshooting on my own. I had a crash report for a WacomTabletDriver. I hadn't used a tablet on this machine for a couple of years, so I deleted anything to do with Wacom. Don't know if that was part of the problem because I'm still getting gpu restarts. But so far no blue screens.

  • by s.illes79,

    s.illes79 s.illes79 Apr 3, 2016 11:37 AM in response to s.illes
    Level 1 (4 points)
    Apr 3, 2016 11:37 AM in response to s.illes

    Hi,

     

    just to report back on this.

    After the latest .4 patch release for ElCap i was still getting lots of graphics crashes so decided to downgrade.

    I have formated my drive, reinstalled Lion and upgrade to Yosemite.

     

    So far so good. I haven't had a crash in the last week and it was running constantly. With ElCap i hardly managed to get 1 hours usage.

    So at this point it's probably hard to says that Elcap has a serious bug affecting 2011 iMacs with AMD Radeon 6970M cards.

     

    Looks like I'm stuck with Yosemite, I guess Apple cannot be bothered to support old hardware.... same on you apple ... ( I have reported the bug to apple support and they never even bother to reply )

  • by Clement Singarajah,

    Clement Singarajah Clement Singarajah Jun 22, 2016 11:24 PM in response to s.illes
    Level 1 (19 points)
    Jun 22, 2016 11:24 PM in response to s.illes

    Same issue with late 2015 iMac 27 inch retina with AMD Radeon R9 M395X 4096 MB. iMac is 4 days old, tons of these GPU resets and mostly these lead to full kernel panics and reboots. For anyone else having this, all of the following have failed to make a difference:

    SMC reset,

    NVRAM reset,

    Safe boot,

    Disc check with Disk Utility

    Apple diagnostics show no  hardware issue,

    Tech tool PRO 8 shows no problems in RAM or any other system including VRAM,  (OWC 32 GB added to stock 8GB)

    Happens with no peripherals attached other than keyboard

    Reinstall OS X 10.11.5 from Recovery partition still happens

    Updated all the Apple and 3rd party software - Microsoft, Adobe, Earth desk, Drop box, ClamVX, Stuffit deluxe, Flip4 mac etc etc

     

    Still has the annoying crashes. Going to Apple Genius desk to see about replacement.

     

    Have yet to try the remove RAM trial, but seems unlikely to make a difference as the errors are almost always GPU resets which I believe is a completely separate chip

  • by Mike Sombrio,

    Mike Sombrio Mike Sombrio Jun 23, 2016 2:54 AM in response to Clement Singarajah
    Level 6 (17,233 points)
    Apple Watch
    Jun 23, 2016 2:54 AM in response to Clement Singarajah

    Before you go to the genius bar you should at least remove the third party ram and test. If the panics persist remove the original ram and test.

  • by Clement Singarajah,

    Clement Singarajah Clement Singarajah Jun 26, 2016 8:53 AM in response to Mike Sombrio
    Level 1 (19 points)
    Jun 26, 2016 8:53 AM in response to Mike Sombrio

    Thank you Mike. I finally tried that and the result was odd.  I removed the original Apple RAM, left the OWC RAM in place. This solved the problem too my surprise. Did the reverse and problem came back, which is not what I expected.

     

    It may have been the actual slot where's the RAM were seated rather than the modules themselves, but I was too pleased to spend more time troubleshooting.  I took it the iMac to Apple, expecting a RAM replacement, instead they chose to replace the whole MAC.

     

    What is also odd, is that neither Apple Diagnostics or Tech Tools Pros RAM testing reported any problem with any RAM several times over the week. I also had switched the locations of the RAM in my testing at least once.