You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Mountain Lion freezing

Has anybody started experiencing sudden freezing and the spinning medicine ball since upgrading ? I have to do a hard reset every time this happens which is severl times a day now since upgrading .

MacBook Pro (13-inch Early 2011), OS X Mountain Lion

Posted on Jul 30, 2012 3:24 PM

Reply
472 replies

May 13, 2013 8:51 PM in response to hersey10

I can cause my MacBook Pro Retina, 15-inch Early 2013 SSD running OS X 10.8.3 to lock up 100% of the time with the NVDA(OpenGL): Channel timeout! The problem happens using Oracle's java 7 update 21 (build 1.7.0_21-b12) whenever I launch the Java Control Panel and click on the "Settings..." button for Temporary Internet Files on the General tab. Everything locks up except for the track pad cursor / bluetooth mouse. From the Console Log the hang occurs at roughly 9:23. I let 5 minutes elapse before reseting via the power button at approximately 9:28. On this system the hang occurs 100% of the time without any intenstive graphic operations occuring. Anything I can do to resolve this?


5/13/13 9:22:37.000 PM kernel[0]: Sandbox: sandboxd(292) deny mach-lookup com.apple.coresymbolicationd

5/13/13 9:22:46.863 PM CVMServer[104]: Check-in to the service com.apple.cvmsCompAgent_x86_64 failed. This is likely because you have either unloaded the job or the MachService has the ResetAtClose attribute specified in the launchd.plist. If present, this attribute should be removed.

5/13/13 9:22:46.895 PM CVMServer[104]: Check-in to the service com.apple.cvmsCompAgent_x86_64 failed. This is likely because you have either unloaded the job or the MachService has the ResetAtClose attribute specified in the launchd.plist. If present, this attribute should be removed.

5/13/13 9:22:57.256 PM WindowServer[92]: Received display connect changed for display 0x42803c0

5/13/13 9:22:57.302 PM WindowServer[92]: Received display connect changed for display 0x3f003d

5/13/13 9:22:57.303 PM WindowServer[92]: Received display connect changed for display 0x3f003e

5/13/13 9:22:57.303 PM WindowServer[92]: Received display connect changed for display 0x3f003f

5/13/13 9:22:57.305 PM WindowServer[92]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x042803c0 device: 0x109379a10 isBackBuffered: 1 numComp: 3 numDisp: 3

5/13/13 9:22:57.308 PM WindowServer[92]: CGXMuxAcknowledge: Posting glitchless acknowledge

5/13/13 9:22:57.354 PM WindowServer[92]: Received display connect changed for display 0x42803c0

5/13/13 9:23:19.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0x8 = Fifo: Watchdog Timeout Error

5/13/13 9:23:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:23:30.000 PM kernel[0]: IOVendorGLContext::ReportGPURestart

5/13/13 9:23:30.000 PM kernel[0]: 0000006e

5/13/13 9:23:30.000 PM kernel[0]: 00000001 0000902d 00000000 00000000

5/13/13 9:23:30.000 PM kernel[0]: 00000000 00000100 00000000 0000000d

5/13/13 9:23:30.000 PM kernel[0]: 00000000 00000000 03000881

5/13/13 9:23:30.000 PM kernel[0]: 00000000 00000000

5/13/13 9:23:30.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error

5/13/13 9:23:50.252 PM WindowServer[92]: CGXDisableUpdate: UI updates were forcibly disabled by application "Console" for over 1.00 seconds. Server has re-enabled them.

5/13/13 9:23:50.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:23:50.253 PM WindowServer[92]: reenable_update_for_connection: UI updates were finally reenabled by application "Console" after 20.01 seconds (server forcibly re-enabled them after 20.00 seconds)

5/13/13 9:24:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:24:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:24:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:24:34.505 PM SubmitDiagInfo[319]: Launched to submit Diagnostics and Usage

5/13/13 9:24:50.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:24:50.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0x20 = PBDMA Error

5/13/13 9:25:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:25:10.000 PM kernel[0]: 0000006e

5/13/13 9:25:10.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:25:10.000 PM kernel[0]: 0000006e

5/13/13 9:25:10.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:25:10.000 PM kernel[0]: 0000006e

5/13/13 9:25:10.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:25:10.000 PM kernel[0]: 0000006e

5/13/13 9:25:10.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:25:10.000 PM kernel[0]: 0000006e

5/13/13 9:25:10.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:25:10.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:25:10.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:25:10.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error

5/13/13 9:25:17.430 PM sshd[321]: USER_PROCESS: 324 ttys000

5/13/13 9:25:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:25:50.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:26:04.722 PM com.apple.launchd.peruser.501[139]: (com.apple.KerberosHelper.LKDCHelper[259]) Exited with code: 1

5/13/13 9:26:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:26:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:26:30.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0x20 = PBDMA Error

5/13/13 9:26:36.765 PM fseventsd[33]: SLOWDOWN: client 0x7ff505802c00 (pid 231) sleeping due to too many errors (num usleeps 12)

5/13/13 9:26:37.642 PM mdworker[330]: Unable to talk to lsboxd

5/13/13 9:26:37.658 PM mdworker[329]: Unable to talk to lsboxd

5/13/13 9:26:37.707 PM sandboxd[331]: ([330]) mdworker(330) deny mach-lookup com.apple.ls.boxd

5/13/13 9:26:37.000 PM kernel[0]: Sandbox: sandboxd(331) deny mach-lookup com.apple.coresymbolicationd

5/13/13 9:26:37.727 PM sandboxd[331]: ([329]) mdworker(329) deny mach-lookup com.apple.ls.boxd

5/13/13 9:26:50.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:26:50.000 PM kernel[0]: 0000006e

5/13/13 9:26:50.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:26:50.000 PM kernel[0]: 0000006e

5/13/13 9:26:50.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:26:50.000 PM kernel[0]: 0000006e

5/13/13 9:26:50.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:26:50.000 PM kernel[0]: 0000006e

5/13/13 9:26:50.000 PM kernel[0]: 00100000 0000902d 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000220 20040004 00000015

5/13/13 9:26:50.000 PM kernel[0]: 00000000 00000000 00000000

5/13/13 9:26:50.000 PM kernel[0]: 00000000 0000000c

5/13/13 9:26:50.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error

5/13/13 9:27:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:27:30.317 PM WindowServer[92]: CGXDisableUpdate: UI updates were forcibly disabled by application "Console" for over 1.00 seconds. Server has re-enabled them.

5/13/13 9:27:30.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:27:50.323 PM WindowServer[92]: disable_update_likely_unbalanced: UI updates still disabled by application "Console" after 120.01 seconds (server forcibly re-enabled them after 100.01 seconds). Likely an unbalanced disableUpdate call.

5/13/13 9:27:50.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:28:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:28:10.000 PM kernel[0]: NVDA(OpenGL): Channel timeout!

5/13/13 9:28:10.000 PM kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error

5/13/13 9:28:36.000 PM bootlog[0]: BOOT_TIME 1368502116 0

May 13, 2013 9:24 PM in response to bpskier

I found at least a temporary workaround to my oracle 7 update 21 java control panel in temporary files settings system hang. The solution was to turn off the dynamic switching feature in OSX which switches to the nvidia GPU on heavy workloads. Apparently when oracle java starts, the system dynamically switches to use the nvidia GPU. The workaround is to keep this dynamic switch from occuring and leave the system using the built-in Intel HD Graphics 4000. http://gfx.io has a nifty tool called gfxCardStatus which can turn off dynamic switching and configure the system to use only the Intel HD Graphics 4000. It seems use of the NVIDIA GeForce GT 650M along with java hits the NVDA Channel timeout frequently at least on my system 100% of the time when in the java control panel / temporary files settings dialog.

May 16, 2013 9:08 PM in response to bpskier

It seems VMWare Fusion also produces the same system hang with an "NVDA(OpenGL): Channel timeout" when the graphics mode is in dynamic switching mode and the system has switched dynamically to the nvidia GPU. Is Apple aware of the NVDA: Channel timeout problem causing system hangs on MacBook pros and might they be working on a solution?

May 20, 2013 7:51 PM in response to hersey10

Hello users, I am having the same problem with NVDA Channel Timeout when using Final Cut X or firefox. The funny thing is that Apple does not fix this problem. This is very annoying. :/

You pay for an expensive machine to have system errors or graphics drivers. If Steve Jobs were alive, I think he would have solved the problem. :/

May 21, 2013 10:54 AM in response to Csound1

I can easily go a month without triggering it. Does that mean that for 29 days, I have a Mac which doesn't suffer from this, and then suddenly my Mac does? I don't think so.


Mostly, though, I think that snide remarks like the one a few posts back about how obviously it's not a problem are (1) unhelpful (2) actually substantially anti-helpful.


If you can help troubleshoot, great! If you can't, please don't pop in just to insult people and insist that there's no problem.

May 21, 2013 11:43 AM in response to Csound1

I wasn't referring to what you said, but to what someone else said a few posts back.


You can, of course, post wherever you want. But consider that Apple's discussion forums are overrun by people who do nothing but tell other people their problems don't exist, aren't problems, and don't need to be fixed, and consider how discouraging it is to people who are having a problem. You can do whatever you want, but I can post asking people to please not do things that aren't actually helping anyone. You are not obliged to act on the request; I am not your boss. And indeed, your post didn't strike me as harmful; I was just reminded of the previous post, and failed to indicate that I was drifting a little bit in topic. Sorry!

May 21, 2013 1:23 PM in response to Csound1

Keeping this on topic, I can reproduce the problem 100% of the time on my MacBook Pro Early 2013 model with retina display, 16 Gbyte memory, 500 GBtye solid state drive, running OSX 10.8.3, dual GPU based system (intel HD 4000 along with NVIDIA). It came installed with 10.8.3 hence I do not have data for 10.8.2 and earlier. It is entirely repeatable each and every time with exactly the same console log messages so long as dynamic GPU switching is enabled. Install Oracle Java 7 update 21 and bring up the Oracle's java control panel and select Settings for Temporary Internet Files. The GUI locks up immediately. The same is true when using VMWare fusion each and every time I bring up a windows virtual machine. Same exact messages in the console log.


If I disable the NVIDIA GPU by tunring off gpu dynamic switching and leave on only the Intel HD 4000 the problem does not occur for either of the two applications. The side affect is the system can't use an external monitor via thunderbolt as this requires enabling the NVIDIA GPU and leads to the GUI hang.


If you don't have a macbook pro, retina, with dual GPUs I doubt you'll experience the problem the same as I do. I have 11 other macs and one xserve. None of the others exerpience the same problem. None the others have a retina display and none of the others as far as I have looked have dual GPUs. It is also possible that the problem is just related to the NVIDIA gpu / driver and is unrelated to dynamic gpu switching. Can't say for sure as I've not done enough testing to elminiate dynamic gpu switching as the culprit for the gui hang.


I've submitted my own bug report to Apple. These are my symptoms. Your mileage may vary.

We'll see what they say.

May 21, 2013 7:47 PM in response to Csound1

Running in safe mode appears to restrict the ability to run java applications such as the Java Control Panel. The system reports a program abort just after after launching the Java Control Panel. Without Java Control Panel starting correctly I can't attempt to reproduce the problem.


Deinstalling Java means I can't run the System Preferences / Java Control Panel which always hangs the gui after selecting Settings for Temporary Internet Files. Note running a Win 7 x64 bit image via vmware fusion stored on a thunderbolt drive with the display setting for Accelerate 3D graphiccs set to "On" continues to hit the gui hang during vm boot. Its not a java only problem but something broader than this.


A new admin account still experiences the same hang when running Java Control Panel.


In all tests if I disable Dynamic Switching via gfxCardStatus and only use integrated Intel HD 4000 GPU, the problem does not occur.


The console log after each hang continues to indicate: "NVDA(OpenGL): Channel timeout!".
The problem seems very straightforward to replicate on my system with my Macbook pro config specified in earlier post and very clearly seems to be an issue with use of the NVDA GPU. There is no randomness in the problem such that it only happens after x number of days.

Mountain Lion freezing

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.