Mountain Lion Screen Freeze

Can't help but I have the same issue. I literally just had to reboot as everything froze and I could not do anythng, snippet from system.log, there are were many of these same debug entries before I rebooted, it has happened many times and everytime I check the system.log I see the same. It only started after my upgrade to OS X Mountain Lion.

Looking forward to the 10.8.1 release to fix this.

Rich.

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: ring head = 0x9480f84c, wrap count = 1188

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: ring tail = 0x000015e8

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: timestamps = 0xa53010

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: Semaphore register values:

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: VRSYNC: (0x12044) = 0xa53010

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: BRSYNC: (0x22040) = 0x1

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: RVSYNC: (0x 2040) = 0x0

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: BVSYNC: (0x22044) = 0x0

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: RBSYNC: (0x 2044) = 0x0

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: VBSYNC: (0x12040) = 0x0

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: trying to clear semaphore wait on MAIN ring

Aug 11 15:43:34 Richards-MacBook-Pro kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

Aug 11 15:43:39 Richards-MacBook-Pro kernel[0]: stampWait: Overflowed checking for stamp 0x2d325 on MEDIA ring: called from

Aug 11 15:43:39 Richards-MacBook-Pro kernel[0]: timestamp = 0x2d324

Aug 11 15:44:26 localhost bootlog[0]: BOOT_TIME 1344717866 0

Aug 11 15:44:43 localhost kernel[0]: PMAP: PCID enabled

Aug 11 15:44:43 localhost kernel[0]: Darwin Kernel Version 12.0.0: Sun Jun 24 23:00:16 PDT 2012; root:xnu-2050.7.9~1/RELEASE_X86_64

Early 2011 MacBook Pro 13"

Processor 2.3 GHz Intel Core i5

Memory 4 GB 1333 MHz DDR3

Graphics Intel HD Graphics 3000 384 MB

I just rebooted my Macbook Pro after it had become unresponsive. I was restoring Apatana Studio from the dock when the machine became non-responsive. The Apatana window was in the beginning of the animation of being restored from the dock when the user interface froze. I'm also got similar messages in the console log as the previous two messages on this thread.

8/11/12 8:48:16.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x4942d3 on MAIN ring: called from waiting for blt buffer (3D blt)

8/11/12 8:48:16.000 PM kernel[0]: timestamp = 0x4942d0

8/11/12 8:48:16.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/11/12 8:48:16.000 PM kernel[0]: ring head = 0x03c0e198, wrap count = 30

8/11/12 8:48:16.000 PM kernel[0]: ring tail = 0x0000eb68

8/11/12 8:48:16.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/11/12 8:48:16.000 PM kernel[0]: timestamps = 0x4942d0

8/11/12 8:48:16.000 PM kernel[0]: Semaphore register values:

8/11/12 8:48:16.000 PM kernel[0]: VRSYNC: (0x12044) = 0x4942d0

8/11/12 8:48:16.000 PM kernel[0]: BRSYNC: (0x22040) = 0x0

8/11/12 8:48:16.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/11/12 8:48:16.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/11/12 8:48:16.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/11/12 8:48:16.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/11/12 8:48:16.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/11/12 8:48:16.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/11/12 8:48:21.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x494306 on MAIN ring: called from waiting for blt buffer (3D blt)

8/11/12 8:48:21.000 PM kernel[0]: timestamp = 0x494304

8/11/12 8:48:21.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/11/12 8:48:21.000 PM kernel[0]: ring head = 0x03c0efc4, wrap count = 30

8/11/12 8:48:21.000 PM kernel[0]: ring tail = 0x00000960

8/11/12 8:48:21.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/11/12 8:48:21.000 PM kernel[0]: timestamps = 0x494304

8/11/12 8:48:21.000 PM kernel[0]: Semaphore register values:

8/11/12 8:48:21.000 PM kernel[0]: VRSYNC: (0x12044) = 0x494304

8/11/12 8:48:21.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/11/12 8:48:21.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/11/12 8:48:21.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/11/12 8:48:21.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/11/12 8:48:21.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/11/12 8:48:21.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/11/12 8:48:21.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/11/12 8:48:26.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x49431c on MAIN ring: called from waiting for blt buffer (3D blt)

8/11/12 8:48:26.000 PM kernel[0]: timestamp = 0x494318

8/11/12 8:48:26.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/11/12 8:48:26.000 PM kernel[0]: ring head = 0x03c0f744, wrap count = 30

8/11/12 8:48:26.000 PM kernel[0]: ring tail = 0x00000c00

8/11/12 8:48:26.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/11/12 8:48:26.000 PM kernel[0]: timestamps = 0x494318

8/11/12 8:48:26.000 PM kernel[0]: Semaphore register values:

8/11/12 8:48:26.000 PM kernel[0]: VRSYNC: (0x12044) = 0x494318

8/11/12 8:48:26.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/11/12 8:48:26.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/11/12 8:48:26.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/11/12 8:48:26.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/11/12 8:48:26.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/11/12 8:48:26.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/11/12 8:48:26.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

These messages repeat 55 more times (in addition to these 3 sets posted here) over the next 4 minutes. Then the bootlog message appears from when I rebooted the machine.

Hardware Overview:

Model Name: MacBook Pro

Model Identifier: MacBookPro8,3

Processor Name: Intel Core i7

Processor Speed: 2.4 GHz

Number of Processors: 1

Total Number of Cores: 4

L2 Cache (per Core): 256 KB

L3 Cache: 6 MB

Memory: 16 GB

Boot ROM Version: MBP81.0047.B27

SMC Version (system): 1.70f5

Sudden Motion Sensor:

State: Enabled

I also work on Mountain Lion and I have the exact same problem, and it happened 3 times in the last couple of days, each time with similar messages to those posted above.

I too have the exact same problem. It started since I installed Mountain Lion and occurs between 1 to 3 times a day. It seems that every time it freezes, the tooltip of one of my dock icons is showing. Not completely visible, but halfway. I assumed it had to do with the dock so i changed my dock settings (turned off magnification, hiding, etc.) but it did not prevent it for happening again.

here's a snippet of my console log:

================================================================================ ============================

8/14/12 2:29:43.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b39f16 on MAIN ring: called from

8/14/12 2:29:43.000 PM kernel[0]: timestamp = 0x6b39f14

8/14/12 2:29:43.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:29:43.000 PM kernel[0]: ring head = 0x4a2078d8, wrap count = 593

8/14/12 2:29:43.000 PM kernel[0]: ring tail = 0x00008210

8/14/12 2:29:43.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:29:43.000 PM kernel[0]: timestamps = 0x6b39f14

8/14/12 2:29:43.000 PM kernel[0]: Semaphore register values:

8/14/12 2:29:43.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b39f14

8/14/12 2:29:43.000 PM kernel[0]: BRSYNC: (0x22040) = 0x0

8/14/12 2:29:43.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:29:43.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:29:43.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:29:43.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:29:43.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:29:43.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f401 still waiting

8/14/12 2:29:48.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b39f19 on MAIN ring: called from waiting for blt buffer (3D blt)

8/14/12 2:29:48.000 PM kernel[0]: timestamp = 0x6b39f15

8/14/12 2:29:48.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:29:48.000 PM kernel[0]: ring head = 0x4a207928, wrap count = 593

8/14/12 2:29:48.000 PM kernel[0]: ring tail = 0x000086f8

8/14/12 2:29:48.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:29:48.000 PM kernel[0]: timestamps = 0x6b39f15

8/14/12 2:29:48.000 PM kernel[0]: Semaphore register values:

8/14/12 2:29:48.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b39f15

8/14/12 2:29:48.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/14/12 2:29:48.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:29:48.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:29:48.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:29:48.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:29:48.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:29:48.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/14/12 2:29:53.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b39f1a on MAIN ring: called from waiting for blt buffer (3D blt)

8/14/12 2:29:53.000 PM kernel[0]: timestamp = 0x6b39f17

8/14/12 2:29:53.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:29:53.000 PM kernel[0]: ring head = 0x4a207a1c, wrap count = 593

8/14/12 2:29:53.000 PM kernel[0]: ring tail = 0x00008730

8/14/12 2:29:53.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:29:53.000 PM kernel[0]: timestamps = 0x6b39f17

8/14/12 2:29:53.000 PM kernel[0]: Semaphore register values:

8/14/12 2:29:53.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b39f17

8/14/12 2:29:53.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/14/12 2:29:53.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:29:53.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:29:53.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:29:53.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:29:53.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:29:53.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/14/12 2:29:58.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b39f33 on MAIN ring: called from waiting for blt buffer (3D blt)

8/14/12 2:29:58.000 PM kernel[0]: timestamp = 0x6b39f30

8/14/12 2:29:58.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:29:58.000 PM kernel[0]: ring head = 0x4a2081d8, wrap count = 593

8/14/12 2:29:58.000 PM kernel[0]: ring tail = 0x00008c00

8/14/12 2:29:58.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:29:58.000 PM kernel[0]: timestamps = 0x6b39f30

8/14/12 2:29:58.000 PM kernel[0]: Semaphore register values:

8/14/12 2:29:58.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b39f30

8/14/12 2:29:58.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/14/12 2:29:58.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:29:58.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:29:58.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:29:58.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:29:58.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:29:58.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/14/12 2:30:03.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b3a036 on MAIN ring: called from waiting for blt buffer (3D blt)

8/14/12 2:30:03.000 PM kernel[0]: timestamp = 0x6b3a008

8/14/12 2:30:03.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:30:03.000 PM kernel[0]: ring head = 0x4a20bbc4, wrap count = 593

8/14/12 2:30:03.000 PM kernel[0]: ring tail = 0x0000d6b0

8/14/12 2:30:03.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:30:03.000 PM kernel[0]: timestamps = 0x6b3a008

8/14/12 2:30:03.000 PM kernel[0]: Semaphore register values:

8/14/12 2:30:03.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b3a008

8/14/12 2:30:03.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/14/12 2:30:03.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:30:03.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:30:03.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:30:03.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:30:03.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:30:03.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

8/14/12 2:30:08.000 PM kernel[0]: stampWait: Overflowed checking for stamp 0x6b3a039 on MAIN ring: called from waiting for blt buffer (3D blt)

8/14/12 2:30:08.000 PM kernel[0]: timestamp = 0x6b3a00a

8/14/12 2:30:08.000 PM kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****

8/14/12 2:30:08.000 PM kernel[0]: ring head = 0x4a20bc84, wrap count = 593

8/14/12 2:30:08.000 PM kernel[0]: ring tail = 0x0000d6e8

8/14/12 2:30:08.000 PM kernel[0]: ring control = 0x0000f401 enabled, auto report disabled, not waiting, semaphore is waiting, length = 0x010 4KB pages

8/14/12 2:30:08.000 PM kernel[0]: timestamps = 0x6b3a00a

8/14/12 2:30:08.000 PM kernel[0]: Semaphore register values:

8/14/12 2:30:08.000 PM kernel[0]: VRSYNC: (0x12044) = 0x6b3a00a

8/14/12 2:30:08.000 PM kernel[0]: BRSYNC: (0x22040) = 0x1

8/14/12 2:30:08.000 PM kernel[0]: RVSYNC: (0x 2040) = 0x0

8/14/12 2:30:08.000 PM kernel[0]: BVSYNC: (0x22044) = 0x0

8/14/12 2:30:08.000 PM kernel[0]: RBSYNC: (0x 2044) = 0x0

8/14/12 2:30:08.000 PM kernel[0]: VBSYNC: (0x12040) = 0x0

8/14/12 2:30:08.000 PM kernel[0]: trying to clear semaphore wait on MAIN ring

8/14/12 2:30:08.000 PM kernel[0]: After attempt to clear semaphore wait = 0x0000f001 no longer waiting

================================================================================ ===========================

I have verified permissions ons my startup disk and it showed this:

http://cl.ly/image/3z3j033R1f2e

it seemed that the permissions for CoreGraphics were not as they were supposed to be.

I have only just fixed the permissions so I can't say wether it helped or not, but i will report back in a while. fingers crossed

I'm also having the same issue, we need to put a fire under this..seems like a common problem.

I have the same issue and it can be solve just restarting my MacBook Pro 13", but I think this is a kind of workaround, we need a complete support for Mac OS X Mountain Lion about this issue. This is my info:

Información del hardware:

Nombre del modelo: MacBook Pro

Identificador del modelo: MacBookPro8,1

Nombre del procesador: Intel Core i5

Velocidad del procesador: 2,4 GHz

Cantidad de procesadores: 1

Cantidad total de núcleos: 2

Caché de nivel 2 (por núcleo): 256 KB

Caché de nivel 3: 3 MB

Memoria: 4 GB

Versión de la ROM de arranque: MBP81.0047.B27

Versión SMC (sistema): 1.68f98

Número de serie (sistema): C2VGK2F6DV13

UUID de hardware: CA35EA56-E301-5457-917C-5FBD304FF109

Sensor de movimiento repentino:

Estado: Activado

Meh, looks like it didn't help anything. I just got a freeze again. Something about a possible hang in the BLT graphics engine...

Do we all have MB Pros early and late 2011 with Intel HD Graphics 3000?

I'm getting the exact same errors, as of about a week ago. The system froze when I moused over the dock a few times last week. Nothing happened for another week, and now it's started again today. I'm getting the exact same console logs as you guys so I won't paste them again. And yes, 2011 MB Pro with Intel HD Graphics 3000.

Odd how this didn't happen for ages (I upgraded to ML on release). It would be great to get a fix for this.

Yep, late 2011 macbook pro with HD graphics 3000.

I've read somewhere this might have something to do with Chrome... coincidentally i am a Chrome user. I've switched to firefox today and am waiting for a freeze...

I hope it's not Chrome triggering bugs, i love that browser

I was never using Chrome.

That's reassuring; I'm on Chrome and for a while I thought that was the cause, but if you're experiencing the same problem without using Chrome, then we know it's something to do with the OS.

Most probably this is caused by GPU driver. It would be interesting to see whether we all have similar hardware.

I am also having freezing issues 3-5 time a day.

Late 2009 MBP - not sure how to show you these logs like above have posted but the description of the problem sounds the same.

I also have black lines flickering over my screen when its trying to carry out a task for me... this has also only happened since I installed ML.

Any ideas?