iMac running Lion randomly rebooting

[Kristijan]

Hi,

My iMac 27-inch Late 2009 running Lion seems to reboot at random intervals. I can't seem to find any pattern, or work out exactly what's causing it. The only thing that's consistant, is that it happens when I'm not using it (i.e. idle).

It happened again while I was out today

imac:~ kristijan$ last
kristijan  ttys003                   Wed Apr 25 17:47   still logged in
kristijan  ttys002                   Wed Apr 25 17:47   still logged in
kristijan  ttys001                   Wed Apr 25 17:47   still logged in
kristijan  ttys000                   Wed Apr 25 17:47   still logged in
kristijan  console                   Wed Apr 25 17:47   still logged in
[B]reboot    ~                         Wed Apr 25 15:29 [/B]

The system log doesn't show anything obvious.

...
Apr 25 14:51:44 imac com.apple.backupd[4244]: Copied 913 files (4.4 MB) from volume iMac SSD.
Apr 25 14:51:44 imac com.apple.backupd[4244]: 2.42 GB required (including padding), 298.92 GB available
Apr 25 14:51:45 imac com.apple.backupd[4244]: Copied 91 files (33 bytes) from volume iMac SSD.
Apr 25 14:51:45 imac com.apple.backupd[4244]: Could not backup up Lion Recovery to /Volumes/Time Machine Backups/Backups.backupdb: Error Domain=NSCocoaErrorDomain Code=-69737 "Unable to mount recovery partition" UserInfo=0x7ff117525400 {NSLocalizedDescription=Unable to mount recovery partition}
Apr 25 14:51:45 imac mds[47]: (Error) Volume: Could not find requested backup type:2 for volume
Apr 25 14:51:45 imac com.apple.backupd[4244]: Starting post-backup thinning
Apr 25 14:51:49 imac com.apple.backupd[4244]: Deleted /Volumes/Time Machine Backups/Backups.backupdb/iMac/2012-04-24-135607 (67.4 MB)
Apr 25 14:51:49 imac com.apple.backupd[4244]: Post-back up thinning complete: 1 expired backups removed
Apr 25 14:51:49 imac com.apple.backupd[4244]: Backup completed successfully.
Apr 25 15:29:24 localhost bootlog[0]: BOOT_TIME 1335331764 0
Apr 25 15:29:25 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Apr 25 15:29:25 localhost com.apple.launchd[1] (com.apple.sandboxd): Unknown value for key POSIXSpawnType: Interactive
Apr 25 15:29:25 localhost fseventsd[19]: event logs in /.fseventsd out of sync with volume.  destroying old logs. (74268 0 74298)
Apr 25 15:29:25 localhost fseventsd[19]: log dir: /.fseventsd getting new uuid: F08C4C99-B7C6-494B-A87D-64A013D39C8C
Apr 25 15:29:26 localhost UserEventAgent[11]: starting CaptiveNetworkSupport as SystemEventAgent built Jun 13 2011 17:29:21
Apr 25 15:29:26 localhost UserEventAgent[11]: WirelessAirPortDeviceNameCopy(): no BSD interface name found for object 12551
Apr 25 15:29:26 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptiveSCCopyWiFiDevices:388 WiFi Device Name == NULL
Apr 25 15:29:26 localhost UserEventAgent[11]: CertsKeychainMonitor: configuring
Apr 25 15:29:27 localhost UserEventAgent[11]: CaptiveNetworkSupport:CreateInterfaceWatchList:2788 WiFi Devices Found. :)
Apr 25 15:29:27 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
...

The kernel log shows the following, but I'm not sure what it means.

Apr 25 01:51:41 imac kernel[0]: add_fsevent: unable to get path for vp 0xffffff803dbbd170 (userdata; ret 22; type 2)
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unabled to get a path for vp 0xffffff803dbbd170.  dropping the event.
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unable to get path for vp 0xffffff803dbbd170 (userdata; ret 22; type 2)
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unabled to get a path for vp 0xffffff803dbbd170.  dropping the event.
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unable to get path for vp 0xffffff803dbbd170 (userdata; ret 22; type 2)
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unabled to get a path for vp 0xffffff803dbbd170.  dropping the event.
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unable to get path for vp 0xffffff803dbbd170 (userdata; ret 22; type 2)
Apr 25 01:51:41 imac kernel[0]: add_fsevent: unabled to get a path for vp 0xffffff803dbbd170.  dropping the event.
Apr 25 01:51:45 imac kernel[0]: add_fsevent: unable to get path for vp 0xffffff803dbb55d0 (Scrobbler.xml; ret 22; type 9)
Apr 25 01:51:45 imac kernel[0]: add_fsevent: unabled to get a path for vp 0xffffff803dbb55d0.  dropping the event.
Apr 25 10:21:55 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 10:22:27: --- last message repeated 1 time ---
Apr 25 10:22:27 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 10:22:57: --- last message repeated 4 times ---
Apr 25 10:22:57 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 10:23:32 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 10:24:02: --- last message repeated 1 time ---
Apr 25 10:24:44 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 10:26:09: --- last message repeated 1 time ---
Apr 25 11:19:55 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 11:22:27 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 11:23:39: --- last message repeated 1 time ---
Apr 25 11:28:23 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 11:28:53: --- last message repeated 1 time ---
Apr 25 11:31:31 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 11:32:21 imac kernel[0]: IOSurface: buffer allocation size is zero
Apr 25 14:36:54 imac kernel[0]: Limiting closed port RST response from 322 to 250 packets per second
Apr 25 15:29:25 localhost kernel[0]: Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64
Apr 25 15:29:25 localhost kernel[0]: vm_page_bootstrap: 4058892 free pages and 102644 wired pages
Apr 25 15:29:25 localhost kernel[0]: kext submap [0xffffff7f8072f000 - 0xffffff8000000000], kernel text [0xffffff8000200000 - 0xffffff800072f000]
Apr 25 15:29:25 localhost kernel[0]: zone leak detection enabled
Apr 25 15:29:25 localhost kernel[0]: standard timeslicing quantum is 10000 us
Apr 25 15:29:25 localhost kernel[0]: mig_table_max_displ = 73

Anyone have any ideas on where to start to even begin troubleshooting this?

Thanks,
Kristijan

 

[blatopilot]

Boot holding SHIFT key to get into safe mode. Is the problem gone?

Also, you could try booting with Command+R to get into recovery and repair your disk or reinstall Lion.

 

[luminairefoto]

Same Problem With Mac Pro

I am having a similar problem with my Mac Pro. About once a month is just randomly restarts. Any solution to this problem?