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

Macbook freezes intermittently

Hi,

Last month I bought Macbook Air 13-inch model(OS X El Capitan 10.11.4), after running it for around 10 days , I observed that it is occasionally freezing and is becoming completely unresponsive leaving me with an option of forcefully shutting it down. First I talked with the Telephonic support and they asked me to take several steps, but none of them worked, finally I was asked to reinstall the OS, I also did that , but nothing happened. In the end I decided to take it to the service centre. They found the issue with Main Logic board and had it replaced.

Even after replacing the MLB, the problem continued and I took it to the centre again for testing, they did the PRAM test, cleaned the fans, applied thermal paste, ran AST and ASD in loop, erased the OS and installed it again , but could not find any problem and my device passed all the tests.

Now today again it froze, I'm really fed up of this now. I'm attaching some screenshots of console which are of the time of freezing.

Please suggest me as to what to do?

Thanks in advance

User uploaded file

MacBook Air (13-inch, Early 2015), OS X El Capitan (10.11.4)

Posted on Apr 27, 2016 9:48 AM

Reply
20 replies

Apr 27, 2016 10:45 AM in response to neerajbhauryal

The problem may be caused by a bug in OS X, triggered by "Flash Player."

If Flash is installed and you haven't already done so, please update to the latest version by opening the Flash Player pane in System Preferences and selecting the Updates tab.

If Flash is already up to date, or if the update doesn't solve the problem, open the Safari preferences window and select the Security tab. Uncheck the box marked

Allow Plug-ins

See whether there's an improvement.

You can watch videos on YouTube and some other sites without using Flash by installing the "ClickToFlash" or "ClickToPlugin" Safari extension. That's not an endorsement. You must always do your own research to determine the safety and effectiveness of any third-party software before using it.

Apr 27, 2016 1:41 PM in response to neerajbhauryal

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.

The test works on OS X 10.8 ("Mountain Lion") and later. I don't recommend running it on older versions of OS X. It will do no harm, but it won't do much good either.

Don't be put off by the complexity of these instructions. The process is much less complicated than the description. You do harder tasks with the computer all the time.

2. If you don't already have a current backup, please back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.

There are ways to back up a computer that isn't fully functional. Ask if you need guidance.

3. Below are instructions to run a UNIX shell script, a type of program. As I wrote above, it changes nothing. It doesn't send or receive any data on the network. All it does is to generate a human-readable report on the state of the computer. That report goes nowhere unless you choose to share it. If you prefer, you can act on it yourself without disclosing the contents to me or anyone else.

You should be wondering whether you can believe me, and whether it's safe to run a program at the behest of a stranger. In general, no, it's not safe and I don't encourage it.

In this case, however, there are ways for you to decide whether the program is safe without having to trust me. First, you can read it. Unlike an application that you download and click to run, it's transparent, so anyone who understands the code can verify what it does.

You may not be able to understand the script yourself. But variations of it have been posted on this website many times over a period of years. Any one of the millions of registered users could have read the script and raised the alarm if it was harmful. Then I would not be here now and you would not be reading this message. See, for example, this discussion.

Nevertheless, if you can't satisfy yourself that these instructions are safe, don't follow them. Ask for other options.

4. Here's a general summary of what you need to do, if you choose to proceed:

☞ Copy the text of a particular web page (not this one) to the Clipboard.

☞ Paste into the window of another application.

☞ Wait for the test to run. It usually takes a few minutes.

☞ Paste the results, which will have been copied automatically, back into a reply on this page.

These are not specific instructions; just an overview. The details are in parts 7 and 8 of this comment. The sequence is: copy, paste, wait, paste again. You don't need to copy a second time.

5. Try to test under conditions that reproduce the problem, as far as possible. For example, if the computer is intermittently slow, run the test during a slowdown.

You may have started up in safe mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual before running it. If you can only test in safe mode, do that.

6. If you have more than one user, and only one user is affected by the problem,, and the affected user is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.

7. Load this linked web page (on the website "Pastebin.") Press the key combination command-A to select all the text, then copy it to the Clipboard by pressing command-C.

8. Launch the built-in Terminal application in any one of the following ways:

☞ Enter the first few letters of its name ("Terminal") into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

Click anywhere in the Terminal window to activate it. Paste from the Clipboard into the window by pressing command-V, then press return. The text you pasted should vanish immediately.

9. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. If you don't know the password, or if you prefer not to enter it, just press return three times at the password prompt. Again, the script will still run.

If the test is taking much longer than usual to run because the computer is very slow, you might be prompted for your password a second time. The authorization that you grant by entering it expires automatically after five minutes.

If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.

10. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, a series of lines will appear in the Terminal window like this:

Test started

Part 1 of 4 done at: … sec

Part 4 of 4 done at: … sec

The test results are on the Clipboard.

Please close this window.

The intervals between parts won't be exactly equal, but they give a rough indication of progress.

Wait for the final message "Please close this window" to appear—again, usually within a few minutes. If you don't see that message within about 30 minutes, the test probably won't complete in a reasonable time. In that case, press the key combination control-C or command-period to stop it. Then go to the next step. You'll have incomplete results, but still something.

In order to get results, the test must either be allowed to complete or else manually stopped as above. If you close the Terminal window while the test is still running, the partial results won't be saved.

11. When the test is complete, or if you stopped it manually, quit Terminal. The results will have been saved to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.

At the top of the results, there will be a line that begins with the words "Start time." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "close this window" message. Please wait for it and try again.

If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.

12. When you post the results, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the software that runs this website. Please post the test results on Pastebin, then post a link here to the page you created.

If you have an account on Pastebin, please don't select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.

13. When you're done with the test, it's gone. There is nothing to uninstall or clean up.

14. This is a public forum, and others may give you advice based on the results of the test. They speak for themselves, not for me. The test itself is harmless, but whatever else you do may not be. For others who choose to run it, I don't recommend that you post the test results on this website unless I asked you to.

15. The linked UNIX shell script bears a notice of copyright. Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

Apr 27, 2016 1:58 PM in response to Linc Davis

1 Start time: 02:23:02 04/28/16

2

3 Revision: 1584

4

5 Model Identifier: MacBookAir7,2

6 Memory: 4 GB

7 Boot ROM Version: MBA71.0166.B12

8 System Version: OS X 10.11.4 (15E65)

9 Kernel Version: Darwin 15.4.0

10 Time since boot: 12 minutes

11

12 CPU usage (%)

13

14 com.apple.WebKit (UID 501): 22.7

15 Safari (UID 501): 20.3

16

17 Energy impact, lifetime (relative)

18

19 WindowServer (UID 88): 1141.09

20

21 GPU usage, lifetime (ms/s)

22

23 WindowServer (UID 88): 2843.31

24

25 Restricted files

26

27 /Library/Application Support/Apple/Safari

28

29 LS schemes: No

30

31 Proxies

32

33 FTPProxy : 192.168.1.4

34 GopherProxy : 192.168.1.4

35 HTTPProxy : 192.168.1.4

36 HTTPSProxy : 192.168.1.4

37 RTSPProxy : 192.168.1.4

38 SOCKSProxy : 192.168.1.4

39

40 Diagnostic reports

41

42 2016-04-27 com.apple.WebKit.WebContent crash

43

44 HID errors: 8

45

46 Non-responders

47

48 com.apple.WindowServer 21

49

50 Kernel log

51

52 Apr 27 21:17:09 Kext com.apple.driver.AppleIntelLpssUARTCommon failed to load (0xdc008017).

53 Apr 27 21:17:09 Dependency com.apple.driver.AppleIntelLpssUARTCommon of kext com.apple.driver.AppleIntelLpssUARTv0 failed to load.

54 Apr 27 21:17:09 Can't remove kext com.apple.driver.AppleIntelLpssUARTCommon; services failed to terminate - 0xdc008018.

55 Apr 27 21:17:09 Kext com.apple.driver.AppleIntelLpssUARTv0 failed to load (0xdc008015).

56 Apr 27 21:17:09 [IGPU] Scheduler Throttle Cap = 100ms.

57 Apr 27 21:17:11 Kext com.apple.driver.AppleIntelLpssUARTCommon start failed (result 0xdc00400a).

58 Apr 27 21:17:11 Kext com.apple.driver.AppleIntelLpssUARTCommon failed to load (0xdc008017).

59 Apr 27 21:17:11 Dependency com.apple.driver.AppleIntelLpssUARTCommon of kext com.apple.driver.AppleIntelLpssUARTv0 failed to load.

60 Apr 27 21:17:11 Can't remove kext com.apple.driver.AppleIntelLpssUARTCommon; services failed to terminate - 0xdc008018.

61 Apr 27 21:17:11 Kext com.apple.driver.AppleIntelLpssUARTv0 failed to load (0xdc008015).

62 Apr 28 02:11:07 Process launchd [1] disabling system-wide I/O Throttling

63 Apr 28 02:11:07 Process launchd [1] disabling system-wide CPU Throttling

64 Apr 28 02:11:22 IO80211ControllerMonitor::configureSubscriptions() failed to add subscriptionIO80211Controller::start _controller is 0xf27f98ede23767e3, provider is 0xf27f98ed8329e2e3

65 Apr 28 02:11:22 init: error getting PHY_MODE; using MODE_UNKNOWN

66 Apr 28 02:11:23 Kext com.apple.driver.AppleIntelLpssUARTCommon start failed (result 0xdc00400a).

67 Apr 28 02:11:23 Kext com.apple.driver.AppleIntelLpssUARTCommon failed to load (0xdc008017).

68 Apr 28 02:11:23 Dependency com.apple.driver.AppleIntelLpssUARTCommon of kext com.apple.driver.AppleIntelLpssUARTv0 failed to load.

69 Apr 28 02:11:23 Can't remove kext com.apple.driver.AppleIntelLpssUARTCommon; services failed to terminate - 0xdc008018.

70 Apr 28 02:11:23 Kext com.apple.driver.AppleIntelLpssUARTv0 failed to load (0xdc008015).

71 Apr 28 02:11:23 [IGPU] Scheduler Throttle Cap = 100ms.

72 Apr 28 02:11:24 Kext com.apple.driver.AppleIntelLpssUARTCommon start failed (result 0xdc00400a).

73 Apr 28 02:11:24 Kext com.apple.driver.AppleIntelLpssUARTCommon failed to load (0xdc008017).

74 Apr 28 02:11:24 Dependency com.apple.driver.AppleIntelLpssUARTCommon of kext com.apple.driver.AppleIntelLpssUARTv0 failed to load.

75 Apr 28 02:11:24 Can't remove kext com.apple.driver.AppleIntelLpssUARTCommon; services failed to terminate - 0xdc008018.

76 Apr 28 02:11:24 Kext com.apple.driver.AppleIntelLpssUARTv0 failed to load (0xdc008015).

77

78 System log

79

80 Apr 28 02:11:43 airportd: -[CWXPCConnection performScanWithChannels:ssidList:legacyScanSSID:includeHiddenNetworks:mergeScan Results:maxAge:maxMissCount:maxWakeCount:maxAutoJoinCount:interfaceName:waitForW iFi:waitForBluetooth:token:priority:reply:]: !!! SCAN request received 1.9118 seconds after previous scan request from 79 (locationd)

81 Apr 28 02:11:45 com.apple.CloudPhotosConfiguration: Request UUID: New and old state identical for service com.apple.photo.icloud.cloudphoto: 0, ignoring request

82 Apr 28 02:11:45 airportd: -[CWXPCConnection performScanWithChannels:ssidList:legacyScanSSID:includeHiddenNetworks:mergeScan Results:maxAge:maxMissCount:maxWakeCount:maxAutoJoinCount:interfaceName:waitForW iFi:waitForBluetooth:token:priority:reply:]: !!! SCAN request received 1.7551 seconds after previous scan request from 79 (locationd)

83 Apr 28 02:13:09 WindowServer: _CGXSetWindowHasKeyAppearance: Operation on a window 0x15 requiring rights kCGSWindowRightOwner by caller Dashboard

84 Apr 28 02:13:09 WindowServer: _CGXSetWindowHasMainAppearance: Operation on a window 0x15 requiring rights kCGSWindowRightOwner by caller Dashboard

85 Apr 28 02:13:33 cloudphotosd: ApplePushService: Connection timed out trying to communicate with apsd

86 Apr 28 02:13:40 networkd: -[NETProxyLookup url] invalid URL scheme '5223'

87 Apr 28 02:14:43 ntpd: sigio_handler: sigio_handler_active != 0

88 Apr 28 02:14:43 ntpd: sigio_handler: sigio_handler_active != 1

89 Apr 28 02:15:23 cloudphotosd: ApplePushService: Connection timed out trying to communicate with apsd

90 Apr 28 02:15:38 cloudphotosd: ApplePushService: Connection timed out trying to communicate with apsd

91 Apr 28 02:15:53 cloudphotosd: ApplePushService: Connection timed out trying to communicate with apsd

92 Apr 28 02:15:58 networkd: -[NETProxyLookup url] invalid URL scheme '5223'

93 Apr 28 02:16:23 WindowServer: _CGXRemoveWindowFromWindowMovementGroup: window 0x6b is not attached to window 0x73

94 Apr 28 02:17:01 ntpd: sigio_handler: sigio_handler_active != 0

95 Apr 28 02:17:01 ntpd: sigio_handler: sigio_handler_active != 1

96 Apr 28 02:18:16 networkd: -[NETProxyLookup url] invalid URL scheme '5223'

97 Apr 28 02:19:18 ntpd: sigio_handler: sigio_handler_active != 0

98 Apr 28 02:19:18 ntpd: sigio_handler: sigio_handler_active != 1

99 Apr 28 02:20:33 networkd: -[NETProxyLookup url] invalid URL scheme '5223'

100 Apr 28 02:21:19 airportd: -[CWXPCConnection performScanWithChannels:ssidList:legacyScanSSID:includeHiddenNetworks:mergeScan Results:maxAge:maxMissCount:maxWakeCount:maxAutoJoinCount:interfaceName:waitForW iFi:waitForBluetooth:token:priority:reply:]: !!! SCAN request received 1.4076 seconds after previous scan request from 79 (locationd)

101 Apr 28 02:21:20 airportd: -[CWXPCConnection performScanWithChannels:ssidList:legacyScanSSID:includeHiddenNetworks:mergeScan Results:maxAge:maxMissCount:maxWakeCount:maxAutoJoinCount:interfaceName:waitForW iFi:waitForBluetooth:token:priority:reply:]: !!! SCAN request received 0.6641 seconds after previous scan request from 79 (locationd)

102 Apr 28 02:21:33 ntpd: sigio_handler: sigio_handler_active != 0

103 Apr 28 02:21:33 ntpd: sigio_handler: sigio_handler_active != 1

104 Apr 28 02:22:48 networkd: -[NETProxyLookup url] invalid URL scheme '5223'

105

106 launchd log

107

108 Apr 25 19:03:06 com.apple.xpc.launchd.domain.system: Could not read path: path = //System/Library/LaunchDaemons/com.apple.mrt.plist, error = 2: No such file or directory

109 Apr 25 19:05:58 com.apple.xpc.launchd.domain.system: Could not read path: path = //System/Library/LaunchDaemons/com.apple.stackshot.plist, error = 2: No such file or directory

110 Apr 25 19:07:19 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

111 Apr 25 19:08:02 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

112 Apr 25 19:08:11 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.95, error = 138: Service cannot be loaded on this hardware

113 Apr 25 19:08:27 com.apple.xpc.launchd.user.domain.248.100013.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.315, error = 138: Service cannot be loaded on this hardware

114 Apr 25 19:23:04 com.apple.xpc.launchd.user.domain.501.100009.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.90, error = 138: Service cannot be loaded on this hardware

115 Apr 26 11:45:58 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

116 Apr 26 11:45:59 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

117 Apr 26 11:47:01 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.90, error = 138: Service cannot be loaded on this hardware

118 Apr 26 13:59:01 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

119 Apr 26 13:59:02 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

120 Apr 26 13:59:20 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.90, error = 138: Service cannot be loaded on this hardware

121 Apr 27 09:42:42 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

122 Apr 27 09:42:43 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

123 Apr 27 09:42:54 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.90, error = 138: Service cannot be loaded on this hardware

124 Apr 27 10:07:26 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

125 Apr 27 10:07:26 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

126 Apr 27 10:07:37 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.91, error = 138: Service cannot be loaded on this hardware

127 Apr 27 21:17:08 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

128 Apr 27 21:17:08 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

129 Apr 27 21:17:18 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.90, error = 138: Service cannot be loaded on this hardware

130 Apr 28 02:11:21 : Failed to remove file or directory: name = dyld_shared_cache_x86_64h, error = 1: Operation not permitted. Further logging suppressed.

131 Apr 28 02:11:22 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

132 Apr 28 02:11:38 com.apple.xpc.launchd.user.domain.501.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.FirmwareUpdateHelper.plist, caller = loginwindow.91, error = 138: Service cannot be loaded on this hardware

133

134 Console log

135

136 Apr 25 18:34:47 fontd: Failed to open read-only database, regenerating DB

137 Apr 25 19:08:16 fontd: Failed to open read-only database, regenerating DB

138

139 System services loaded

140

141 com.adobe.fpsaud

142 com.apple.logd

143 - status: 1

144 com.apple.watchdogd

145

146 iCloud errors

147

148 cloudd 16

149 cloudphotosd 14

150 comapple.CloudPhotosConfiguration 8

151 Finder 2

152

153 Continuity errors

154

155 sharingd 23

156

157 Restrictive permissions: 4

158

159 PrefPane

160

161 /Library/PreferencePanes/Flash Player.prefPane

162 - com.adobe.flashplayerpreferences

163

164 Bundles

165

166 /Library/Internet Plug-Ins/Flash Player.plugin

167 - com.macromedia.Flash Player.plugin

168 - Adobe Systems, Inc.

169 /Library/Internet Plug-Ins/Quartz Composer.webplugin

170 - com.apple.QuartzComposer.webplugin

171 - Software Signing

172

173 Non-loading kernel extensions

174

175 /System/Library/Extensions/AppleOSXUSBNCM.kext

176 - com.apple.driver.AppleOSXUSBNCM

177 - Software Signing

178

179 Installations

180

181 Adobe Flash Player: 28/04/16, 2:10 AM

182

183 Elapsed time (sec): 322

Apr 28, 2016 7:36 AM in response to Linc Davis

Sir I've informed them and they are trying to resolve the issue. Sir can you say something by looking at the console screenshot?
Following comes whenever my Mac freezes
"Apr 28 02:59:39 Neeraj-Bhauryal watchdogd[217]: [watchdog_daemon] @(_wd_daemon_service_thread) - service (com.apple.WindowServer) reported as unresponsive"

What does this mean?

Macbook freezes intermittently

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