Mac keeps losing internet connnection

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Mac keeps losing internet connnection

I'm running a mid 2010 21.5 inch iMac, on the latest version of Mavericks. For a couple months now I have been having this problem where I am suddenly unable to connect to the internet on my Mac. This occurs across all users, but only on this machine- other devices on the WiFi network can connect. Connecting to the router via WiFi instead of ethernet makes no difference. A restart is the only way to fix the problem. It occurs randomly, sometimes going a couple of days without but sometimes multiple times in the same day. Any advice would be hugely appreciated.

iMac, OS X Mavericks (10.9.4), 21.5" Mid-2010 i3

Posted on Jul 31, 2014 7:29 AM

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Answer 1

Linc Davis

Level 10

209,739 points

Jul 31, 2014 11:19 AM in response to J Minton

When you have the problem, note the exact time: hour, minute, second.

These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name 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. Click Utilities, then Console in the icon grid.

The title of the Console window should be All Messages. If it isn't, select

SYSTEM LOG QUERIES ▹ All Messages

from the log list on the left. If you don't see that list, select

View ▹ Show Log List

from the menu bar at the top of the screen.

Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above. Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first. Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.

The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.

Please don't indiscriminately dump thousands of lines from the log into this discussion.

Please don't post screenshots of log messages—post the text.

Some private information, such as your name, may appear in the log. Anonymize before posting.

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Answer 2

J Minton Author

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Jul 31, 2014 2:03 PM in response to Linc Davis

Thanks very much for the detailed instructions, I'll use them the next time the issue occurs.

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Answer 3

J Minton Author

Level 1

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Aug 1, 2014 3:52 AM in response to Linc Davis

The problem occurred again, and these messages showed up in the log-

01/08/2014 11:29:18.000 kernel[0]: process Google Chrome He[1009] caught causing excessive wakeups. EXC_RESOURCE supressed due to audio playback

01/08/2014 11:30:50.103 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2477 kqueue() failed 24 - Too many open files

01/08/2014 11:30:50.103 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2477 failed to connect

01/08/2014 11:30:50.106 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2477 kqueue() failed 24 - Too many open files

01/08/2014 11:30:50.106 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2477 failed to connect

01/08/2014 11:31:08.619 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2490 kqueue() failed 24 - Too many open files

01/08/2014 11:31:08.620 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2490 failed to connect

01/08/2014 11:31:08.623 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2490 kqueue() failed 24 - Too many open files

01/08/2014 11:31:08.623 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2490 failed to connect

01/08/2014 11:31:08.657 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2491 kqueue() failed 24 - Too many open files

01/08/2014 11:31:08.657 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2491 failed to connect

01/08/2014 11:31:08.660 SophosWebIntelligence[63]: tcp_connection_destination_setup_socket_events 2491 kqueue() failed 24 - Too many open files

01/08/2014 11:31:08.660 SophosWebIntelligence[63]: tcp_connection_handle_destination_prepare_complete 2491 failed to connect

01/08/2014 11:31:08.712 SophosWebIntelligence[63]: tcp_connection_destination_start failed to create socket(2) 24 - Too many open files (sandboxing issue?)

01/08/2014 11:31:08.713 SophosWebIntelligence[63]: tcp_connection_destination_start failed to create socket(2) 24 - Too many open files (sandboxing issue?)

01/08/2014 11:31:48.169 apsd[255]: Unrecognized leaf certificate

I don't know exactly when it started, as I only notice the problem when trying to open a new webpage, but I'm pretty certain it was within this range.

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