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I have an iMac running OS X and since yesterday my processor has been working hard for no particular reason. The computer hangs for a few minutes, then I can work again, then it hangs, etc.
Here are my console messages from the last 'hang' event:
5/23/12 3:40:37 PM Firewall[69] mysqld is listening from 0.0.0.0:3306 proto=6
5/23/12 3:45:06 PM Firewall[69] ruby is listening from 0.0.0.0:3000 proto=6
5/23/12 3:45:36 PM com.apple.usbmuxd[35] _SendAttachNotification (thread 0x1005f5cc0): sending attach for device 7c:c5:37:12:93:e9@fe80::7ec5:37ff:fe12:93e9._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
5/23/12 3:45:56 PM com.apple.usbmuxd[35] SCEDeviceSocketCallback 0x104c00970-usbmuxd/NULL remote peer closed connection for sce 0x104c00970.
5/23/12 3:46:01 PM usbmuxd[35] _send_message (thread 0x102481000): Could not send message size 483: Broken pipe.
5/23/12 3:46:01 PM usbmuxd[35] AMDeviceStartSession (thread 0x102481000): Could not start session: kAMDInvalidPairRecordError
5/23/12 3:46:01 PM usbmuxd[35] _AMDevicePreflightWorker (thread 0x102481000): Pair worker could not pair with device 7: 0xe8000082
5/23/12 3:46:01 PM com.apple.usbmuxd[35] HandleDeviceAttachHelperCallback preflighting failed for WiFi device 0x7-192.168.1.101:0: 0xe8000082. Ignoring device.
5/23/12 3:46:03 PM com.apple.usbmuxd[35] _SendDetachNotification (thread 0x1005f5cc0): sending detach for device 7c:c5:37:12:93:e9@fe80::7ec5:37ff:fe12:93e9._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
5/23/12 3:48:17 PM com.apple.usbmuxd[35] _SendAttachNotification (thread 0x1005f5cc0): sending attach for device 7c:c5:37:12:93:e9@fe80::7ec5:37ff:fe12:93e9._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
5/23/12 3:48:18 PM usbmuxd[35] _AMDeviceConnectByAddressAndPort (thread 0x102481000): IPv4
5/23/12 3:50:23 PM ntpd[31] time reset -0.679154 s
I get these three lines often and they completely freeze my computer for a couple of minutes while they're happening:
5/23/12 7:34:14 PM com.apple.usbmuxd[35] _SendAttachNotification (thread 0x1005f5cc0): sending attach for device 7c:c5:37:12:93:e9@fe80::7ec5:37ff:fe12:93e9._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
5/23/12 7:34:14 PM usbmuxd[35] _AMDeviceConnectByAddressAndPort (thread 0x102481000): IPv4
5/23/12 7:34:34 PM com.apple.usbmuxd[35] _SendDetachNotification (thread 0x1005f5cc0): sending detach for device 7c:c5:37:12:93:e9@fe80::7ec5:37ff:fe12:93e9._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
It seems to gets worse when I open up a browser, especially Chrome, but it happens otherwise as well. Do you know what might be going on here?
Looks like some network device, actually. Notice the MAC addresses. – kevlar1818 – 2012-05-23T20:44:50.260
just by the name of the offending lines, it looks like a USB multiplexer is hanging - IDK much about macs, but maybe a USB driver issue? – Nate Koppenhaver – 2012-05-24T00:29:34.707