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Sound stuttering after Mountain Lion install

Dear community,


after having installed OSX Mountain Lion my sound startet stuttering whenever there is rapid movement on my screen.

This includes e.g. window movement, scrolling through image loaded websites or video playback (flash player, quicktime).

A restart didn't help. I'm using stereo output, not digital.


I have connected a second monitor but the problem persists after disconnecting it. Movement on the second monitor also causes the sound to stutter.

My GPU Diode temperature is at 85°C (there is some bug that keeps the GPU under load while a second monitor is connected AFAIK), but I guess it was the same under Snow Leopard.


In Snow Leopard the sound output was always perfect even under heavy load or heavy HDD I/O.


Any ideas?

iMac (27-inch Mid 2011), OS X Mountain Lion

Posted on Jul 28, 2012 5:48 AM

Reply
Question marked as Top-ranking reply

Posted on Jul 28, 2012 3:22 PM

I am also having this issue as well.


I opened Activity Monitor and noticed that during the stuttering, coreaudiod jumps in CPU usage, often past 5%. I have also noticed graphics lag when this occurs if I'm doing something like watching full-screen video or gaming.


I'm currently experiencing this on mid 2011 iMac 27" as well as a 24" iMac 2009 model I use at work.

1,223 replies

Feb 5, 2013 2:41 PM in response to kallisti

On 10.8.2 when undoing a previous action in Ableton live and just now when opening a project, there is popping and console shows: Unable to talk to lsboxd


2/5/13 11:27:50.000 PM kernel[0]: KeThread::run - delay:1679us

2/5/13 11:27:50.000 PM kernel[0]: KeThread::run - delay:1553us

2/5/13 11:27:51.000 PM kernel[0]: KeThread::run - delay:1502us

2/5/13 11:27:52.000 PM kernel[0]: KeThread::run - delay:1593us

2/5/13 11:27:53.000 PM kernel[0]: KeThread::run - delay:1545us

2/5/13 11:27:53.000 PM kernel[0]: KeThread::run - delay:1531us

2/5/13 11:27:54.701 PM mdworker[2221]: Unable to talk to lsboxd

2/5/13 11:27:54.000 PM kernel[0]: KeThread::run - delay:1529us

2/5/13 11:27:54.000 PM kernel[0]: KeThread::run - delay:1509us

2/5/13 11:27:54.000 PM kernel[0]: KeThread::run - delay:2406us

2/5/13 11:27:54.760 PM sandboxd[2226]: ([2221]) mdworker(2221) deny mach-lookup com.apple.ls.boxd (pre-ls-info fstype:hfs fsflag:480D000 flags:240000005E diag:0 uti:dyn.ah62d4rv4ge80g3xh plugin:internalPlainTextImporter - find suspect file using: sudo mdutil -t 2916962)

2/5/13 11:27:54.000 PM kernel[0]: Sandbox: sandboxd(2226) deny mach-lookup com.apple.coresymbolicationd

2/5/13 11:27:55.000 PM kernel[0]: KeThread::run - delay:1574us

2/5/13 11:27:56.000 PM kernel[0]: KeThread::run - delay:1682us

2/5/13 11:27:56.000 PM kernel[0]: KeThread::run - delay:1509us

2/5/13 11:27:56.000 PM kernel[0]: KeThread::run - delay:1564us

2/5/13 11:27:56.000 PM kernel[0]: KeThread::run - delay:1742us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1514us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1645us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1636us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1558us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1539us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1647us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1555us

2/5/13 11:27:57.000 PM kernel[0]: KeThread::run - delay:1793us

2/5/13 11:27:58.000 PM kernel[0]: KeThread::run - delay:1783us

2/5/13 11:27:58.000 PM kernel[0]: KeThread::run - delay:1611us

2/5/13 11:27:58.000 PM kernel[0]: KeThread::run - delay:1663us

2/5/13 11:27:58.000 PM kernel[0]: KeThread::run - delay:1507us

2/5/13 11:27:58.000 PM kernel[0]: KeThread::run - delay:1540us

2/5/13 11:27:59.000 PM kernel[0]: KeThread::run - delay:1532us

2/5/13 11:27:59.000 PM kernel[0]: KeThread::run - delay:1591us

2/5/13 11:28:00.000 PM kernel[0]: KeThread::run - delay:1849us

2/5/13 11:28:00.000 PM kernel[0]: KeThread::run - delay:1633us

2/5/13 11:28:00.000 PM kernel[0]: KeThread::run - delay:1535us

2/5/13 11:28:00.000 PM kernel[0]: KeThread::run - delay:1542us

2/5/13 11:28:01.000 PM kernel[0]: KeThread::run - delay:1599us

2/5/13 11:28:01.000 PM kernel[0]: KeThread::run - delay:1521us

2/5/13 11:28:02.470 PM mdworker[2207]: Unable to talk to lsboxd

2/5/13 11:28:02.000 PM kernel[0]: KeThread::run - delay:2128us

2/5/13 11:28:02.523 PM sandboxd[2226]: ([2207]) mdworker(2207) deny mach-lookup com.apple.ls.boxd (pre-ls-info fstype:hfs fsflag:4809000 flags:200000056 diag:0 uti:dyn.ah62d4rv4ge80g3xh plugin:internalPlainTextImporter - find suspect file using: sudo mdutil -t 419561)

2/5/13 11:28:02.000 PM kernel[0]: KeThread::run - delay:1745us

2/5/13 11:28:02.000 PM kernel[0]: KeThread::run - delay:1607us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1591us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1597us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1519us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1659us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1502us

2/5/13 11:28:03.000 PM kernel[0]: KeThread::run - delay:1842us

2/5/13 11:28:04.000 PM kernel[0]: KeThread::run - delay:1531us

2/5/13 11:28:04.000 PM kernel[0]: KeThread::run - delay:1574us

2/5/13 11:28:05.000 PM kernel[0]: KeThread::run - delay:1572us

2/5/13 11:28:05.000 PM kernel[0]: KeThread::run - delay:1715us

2/5/13 11:28:05.000 PM kernel[0]: KeThread::run - delay:1635us

2/5/13 11:28:05.000 PM kernel[0]: KeThread::run - delay:1559us

2/5/13 11:28:05.000 PM kernel[0]: KeThread::run - delay:1563us

2/5/13 11:28:06.000 PM kernel[0]: KeThread::run - delay:1555us

2/5/13 11:28:06.000 PM kernel[0]: KeThread::run - delay:1730us

2/5/13 11:28:06.000 PM kernel[0]: KeThread::run - delay:1694us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1560us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1562us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1617us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1574us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1588us

2/5/13 11:28:07.000 PM kernel[0]: KeThread::run - delay:1596us

2/5/13 11:28:08.000 PM kernel[0]: KeThread::run - delay:1741us

2/5/13 11:28:08.000 PM kernel[0]: KeThread::run - delay:1508us

2/5/13 11:28:34.396 PM Safari[2232]: *** WARNING: Method convertPointToBase: in class NSView is deprecated on 10.7 and later. It should not be used in new applications.

2/5/13 11:28:49.000 PM kernel[0]: *** Connected to client 2241 ***

2/5/13 11:30:45.656 PM mdworker[2250]: Unable to talk to lsboxd

2/5/13 11:30:45.000 PM kernel[0]: KeThread::run - delay:1890us

2/5/13 11:30:45.791 PM sandboxd[2252]: ([2250]) mdworker(2250) deny mach-lookup com.apple.ls.boxd

2/5/13 11:30:45.000 PM kernel[0]: Sandbox: sandboxd(2252) deny mach-lookup com.apple.coresymbolicationd

2/5/13 11:31:00.645 PM WebProcess[2234]: objc[2234]: Object 0x7f8c5341cb80 of class NSUserDefaults autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug

2/5/13 11:31:13.000 PM kernel[0]: AudioSM::init nUsedSamples != nMaxSamples 131070 - 131072

2/5/13 11:31:13.000 PM kernel[0]: RESET_ON_UNDER_DELAY, m_uNumUnderrun=22

2/5/13 11:31:13.000 PM kernel[0]: UNDERRUN iBlocksToProcess:5 > iAvailableBlocksFromClients:-18, delay:1 mRts:10 m_uNumUnderrun=0

2/5/13 11:31:13.000 PM kernel[0]: UNDERRUN iBlocksToProcess:2 > iAvailableBlocksFromClients:-21, delay:1 mRts:10 m_uNumUnderrun=1

2/5/13 11:31:23.260 PM Safari[2232]: CGContextClipToRect: invalid context 0x0

2/5/13 11:31:23.000 PM kernel[0]: RESET_ON_UNDER_DELAY, m_uNumUnderrun=7

2/5/13 11:31:23.000 PM kernel[0]: UNDERRUN iBlocksToProcess:4 > iAvailableBlocksFromClients:-3, delay:1 mRts:10 m_uNumUnderrun=0

2/5/13 11:31:23.000 PM kernel[0]: UNDERRUN iBlocksToProcess:4 > iAvailableBlocksFromClients:-7, delay:2 mRts:10 m_uNumUnderrun=1

2/5/13 11:31:31.680 PM Safari[2232]: CGContextClipToRect: invalid context 0x0

2/5/13 11:31:32.840 PM Safari[2232]: CGContextClipToRect: invalid context 0x0

2/5/13 11:31:46.684 PM mdworker[2264]: Unable to talk to lsboxd

2/5/13 11:31:46.000 PM kernel[0]: KeThread::run - delay:2484us

2/5/13 11:31:46.747 PM sandboxd[2266]: ([2264]) mdworker(2264) deny mach-lookup com.apple.ls.boxd

2/5/13 11:31:46.000 PM kernel[0]: Sandbox: sandboxd(2266) deny mach-lookup com.apple.coresymbolicationd

2/5/13 11:33:13.000 PM kernel[0]: *** Connected to client 2281 ***

2/5/13 11:33:15.000 PM kernel[0]: AudioSM::init nUsedSamples != nMaxSamples 131070 - 131072

2/5/13 11:33:15.000 PM kernel[0]: RESET_ON_UNDER_DELAY, m_uNumUnderrun=17

2/5/13 11:33:15.000 PM kernel[0]: UNDERRUN iBlocksToProcess:5 > iAvailableBlocksFromClients:-17, delay:1 mRts:10 m_uNumUnderrun=0

2/5/13 11:33:15.000 PM kernel[0]: UNDERRUN iBlocksToProcess:1 > iAvailableBlocksFromClients:-21, delay:1 mRts:10 m_uNumUnderrun=1

2/5/13 11:33:39.984 PM Live[2281]: Address book access is denied for executable at path: /Applications/Ableton Live 8.app/Contents/MacOS/Live

(

0 AddressBook 0x96d2429a __ABIsAccessGranted_block_invoke_0 + 39

1 libdispatch.dylib 0x97516c82 _dispatch_client_callout + 46

2 libdispatch.dylib 0x97516bf1 dispatch_once_f + 57

3 libdispatch.dylib 0x97517831 dispatch_once + 31

4 AddressBook 0x96d241e2 ABIsAccessGranted + 50

5 AddressBook 0x96d240d6 +[ABAddressBook sharedAddressBook] + 35

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7 FilterFreak2 0x2bae0d91 _ZN12wmHTTPDialer14sendSystemInfoEPc + 689

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11 FilterFreak2 0x2ba1fc0c _ZN8wmObject7changedE14wmObjectAspect + 188

12 FilterFreak2 0x2baac073 _ZN17wmNumberParameter5valueEd7wmUnitsih + 627

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15 FilterFreak2 0x2bac3760 _ZN8wmEffect7setDataEP13wmArchiveFile + 688

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18 FilterFreak2 0x2ba5d2c9 _ZN10wmArchiver5valueEP12wmSetPointerh + 665

19 FilterFreak2 0x2baae45e _ZN14wmSetParameter5valueEPKch + 238

20 FilterFreak2 0x2ba5c23e _ZN10wmArchiver7setDataEP13wmArchiveFile + 78

21 FilterFreak2 0x2ba56752 _ZN13wmArchiveFile12getParameterEPcP11wmParameterh + 226

22 FilterFreak2 0x2bac3516 _ZN8wmEffect7setDataEP13wmArchiveFile + 102

23 FilterFreak2 0x2bab1127 _ZN15wmPlugInProcess12setPresetRawEPcl10wmSaveSpec + 647

24 FilterFreak2 0x2bab138a _ZN15wmPlugInProcess9setPresetEPcl10wmSaveSpec + 122

25 FilterFreak2 0x2bac75a1 _ZN12SoundToysVST8setChunkEPvib + 65

26 FilterFreak2 0x2bacc2fc _ZN12AudioEffectX10dispatcherEiiiPvf + 316

27 Live 0x000d72fc Live + 877308

28 Live 0x000c6624 Live + 808484

29 Live 0x000bc060 Live + 766048

30 Live 0x000c41f2 Live + 799218

31 Live 0x00068d96 Live + 425366

32 Live 0x0007e51a Live + 513306

33 Live 0x00076e87 Live + 482951

34 Live 0x0005dbb0 Live + 379824

35 Live 0x000c5750 Live + 804688

36 Live 0x00d38504 Live + 13858052

37 Live 0x00d3b636 Live + 13870646

38 Live 0x00daeb1d Live + 14342941

39 Live 0x00dcaf94 Live + 14458772

40 Live 0x010cc57d _ZNSt11range_errorD0Ev + 2330475

41 Live 0x0104febd _ZNSt11range_errorD0Ev + 1820843

42 Live 0x015d5d9b _ZNSt12out_of_rangeD0Ev + 3690299

43 Live 0x00444d39 Live + 4472121

44 Live 0x0044551b Live + 4474139

45 Live 0x00445409 Live + 4473865

46 Live 0x0134efcf _ZNSt12out_of_rangeD0Ev + 1040751

47 Live 0x0134e6f4 _ZNSt12out_of_rangeD0Ev + 1038484

48 Live 0x0149f2fd _ZNSt12out_of_rangeD0Ev + 2417821

49 Live 0x0146fc27 _ZNSt12out_of_rangeD0Ev + 2223559

50 Live 0x0149a24e _ZNSt12out_of_rangeD0Ev + 2397166

51 Live 0x01553d6b _ZNSt12out_of_rangeD0Ev + 3157771

52 Live 0x0146d898 _ZNSt12out_of_rangeD0Ev + 2214456

53 Live 0x0147588c _ZNSt12out_of_rangeD0Ev + 2247212

54 libobjc.A.dylib 0x990c55d3 -[NSObject performSelector:withObject:] + 70

55 AppKit 0x997bbbd2 -[NSApplication sendAction:to:from:] + 436

56 AppKit 0x998f83dc -[NSMenuItem _corePerformAction] + 529

57 AppKit 0x998f806b -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] + 163

58 AppKit 0x998f76f4 -[NSMenu _performActionWithHighlightingForItemAtIndex:sendAccessibilityNotification:] + 79

59 AppKit 0x995d82ba -[NSMenu performActionForItemAtIndex:] + 65

60 AppKit 0x995d826f -[NSMenu _internalPerformActionForItemAtIndex:] + 45

61 AppKit 0x995d823a -[NSMenuItem _internalPerformActionThroughMenuIfPossible] + 106

62 AppKit 0x995d80b9 -[NSCarbonMenuImpl _carbonCommandProcessEvent:handlerCallRef:] + 162

63 AppKit 0x998f07ce NSSLMMenuEventHandler + 454

64 HIToolbox 0x91811b6b _Z22_InvokeEventHandlerUPPP25OpaqueEventHandlerCallRefP14OpaqueEventRefPvPFlS0_ S2_S3_E + 36

65 HIToolbox 0x91699594 _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1343

66 HIToolbox 0x91698980 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14H andlerCallRec + 430

67 HIToolbox 0x916ac855 SendEventToEventTarget + 88

68 HIToolbox 0x91811a1a _ZL18SendHICommandEventmPK9HICommandmmhPKvP20OpaqueEventTargetRefS5_PP14OpaqueE ventRef + 498

69 HIToolbox 0x91688b84 SendMenuCommandWithContextAndModifiers + 70

70 HIToolbox 0x91688b31 SendMenuItemSelectedEvent + 268

71 HIToolbox 0x916889b6 _ZL19FinishMenuSelectionP13SelectionDataP10MenuResultS2_ + 134

72 HIToolbox 0x9185e02e _ZL14MenuSelectCoreP8MenuData5PointdmPP13OpaqueMenuRefPt + 623

73 HIToolbox 0x91669332 _HandleMenuSelection2 + 633

74 HIToolbox 0x916690af _HandleMenuSelection + 53

75 AppKit 0x997a945a _NSHandleCarbonMenuEvent + 309

76 AppKit 0x996d00df _DPSNextEvent + 2425

77 AppKit 0x996cf26c -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 119

78 AppKit 0x996c56cc -[NSApplication run] + 855

79 Live 0x0147ac50 _ZNSt12out_of_rangeD0Ev + 2268656

80 Live 0x0146c204 _ZNSt12out_of_rangeD0Ev + 2208676

81 Live 0x00002bbb Live + 7099

82 Live 0x00002ae9 Live + 6889

)

2/5/13 11:33:44.000 PM kernel[0]: RESET_ON_UNDER_DELAY, m_uNumUnderrun=7

2/5/13 11:33:44.000 PM kernel[0]: UNDERRUN iBlocksToProcess:5 > iAvailableBlocksFromClients:0, delay:1 mRts:10 m_uNumUnderrun=0

2/5/13 11:33:44.000 PM kernel[0]: UNDERRUN iBlocksToProcess:4 > iAvailableBlocksFromClients:-5, delay:2 mRts:10 m_uNumUnderrun=1

2/5/13 11:33:44.000 PM kernel[0]: KeThread::run - delay:1554us

2/5/13 11:35:48.256 PM mdworker[2319]: Unable to talk to lsboxd

2/5/13 11:35:48.000 PM kernel[0]: KeThread::run - delay:2203us

2/5/13 11:35:48.000 PM kernel[0]: Sandbox: sandboxd(2320) deny mach-lookup com.apple.coresymbolicationd

2/5/13 11:35:48.848 PM sandboxd[2320]: ([2319]) mdworker(2319) deny mach-lookup com.apple.ls.boxd

2/5/13 11:36:05.009 PM com.apple.qtkitserver[2324]: CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary on line 3. Parsing will be abandoned. Break on _CFPropertyListMissingSemicolon to debug.

2/5/13 11:36:05.075 PM com.apple.qtkitserver[2324]: Reviver.component -- file://localhost/Library/Audio/Plug-Ins/Components/: trouble parsing Info.plist's AudioComponents; entry: <CFBasicHash 0x7c44d850 [0xac2da840]>{type = mutable dict, count = 7,

entries =>

0 : <CFString 0xac2ca4bc [0xac2da840]>{contents = "description"} = <CFString 0x7c44d430 [0xac2da840]>{contents = "Reviver"}

1 : <CFString 0x7c44d590 [0xac2da840]>{contents = "subtype"} = <CFString 0x7c44d300 [0xac2da840]>{contents = "Rviv"}

2 : <CFString 0x7c44d5e0 [0xac2da840]>{contents = "manufacturer"} = <CFString 0x7c44d620 [0xac2da840]>{contents = "Fielding DSP"}

3 : <CFString 0xac2ce6bc [0xac2da840]>{contents = "type"} = <CFString 0x7c44aac0 [0xac2da840]>{contents = "aufx"}

4 : <CFString 0xac2cbf4c [0xac2da840]>{contents = "name"} = <CFString 0x7c44d680 [0xac2da840]>{contents = "Fielding DSP: Reviver"}

9 : <CFString 0xac2cc77c [0xac2da840]>{contents = "version"} = <CFNumber 0x7c44ca30 [0xac2da840]>{value = +65793, type = kCFNumberSInt64Type}

12 : <CFString 0x7c44d530 [0xac2da840]>{contents =

2/5/13 11:36:05.000 PM kernel[0]: *** Connected to client 2324 ***

2/5/13 11:36:05.000 PM kernel[0]: AudioSM::init nUsedSamples != nMaxSamples 131070 - 131072

2/5/13 11:36:05.000 PM kernel[0]: RESET_ON_UNDER_DELAY, m_uNumUnderrun=38

2/5/13 11:36:05.000 PM kernel[0]: UNDERRUN iBlocksToProcess:5 > iAvailableBlocksFromClients:-26, delay:1 mRts:10 m_uNumUnderrun=0

2/5/13 11:36:05.000 PM kernel[0]: UNDERRUN iBlocksToProcess:4 > iAvailableBlocksFromClients:-31, delay:2 mRts:10 m_uNumUnderrun=1

2/5/13 11:36:05.000 PM kernel[0]: AudioSM::init nUsedSamples != nMaxSamples 131070 - 131072

Feb 5, 2013 3:46 PM in response to rmbpfan

I'm gonna entertain a hunch with your possible crackling. I know if you have an analogue input or a channel that has an inaudible signal running through it (DC bias, very low frequency, extremely high frequency etc) any routing changes will make a loud crack through the mains.


its not uncommon for mixers like the Xone to have this biasing issue on the preamps



Are you experiencing the big cracking noise on the headphone output of your computer or is that noise exclusive to the Xone?




•• Edit: also check to see that every last thing on your audio signal chain is plugged into the same power circuit. This includes stuff like powered studio monitors, the mixer, the computer, any external fx, drives, printer, usb devices....generally everything in the system that could possibly be sharing the ground connection

Feb 5, 2013 3:49 PM in response to kallisti

mm yes but my address book on this machine is not important 😉 but it seems that even rerouting a send from fxbus to master for example while no audio is being sent (so it is not like you interrupt audio) the static still occurs and i have experienced this also outside of live, like videos listening and skipping through new music, so funky it definately is but probably not the cause I would think.

Feb 5, 2013 4:03 PM in response to rmbpfan

i think you might be experiencing 2 separate problems simultaneously


DC bias cannot be heard and it would be present on a number of channels simultaneously


in the Audio MIDI Setup app, is your clock set to "Internal"? Does changing the sample frequency (while abelton is not running) make a loud cracking sound or does it just make a tiny snap?


when the audio stutters on the 3 dif systems I've tested, it makes a high pitched squeak because the stream is being interrupted and interpolated between zero-crossings.

Sound stuttering after Mountain Lion install

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