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Lion installs triggering Wi-Fi instability problems

updated 11:15 am EDT, Mon July 25, 2011

Issues, solutions proving inconsistent

New installations of OS X Lion are causing Wi-Fi connections to fail, according to posts on Apple's support forums. Affected users say that despite perfectly functional Wi-Fi before the Lion upgrade, they are suddenly seeing connections become intermittent or broken. Other devices will continue to hold a link, such as iPads or Macs without Lion.

The complaints add, though, to those from people who say they have had unstable connections since Snow Leopard. Solutions proposed by users can vary widely. While some propose ideas as simple as deleting a Keychain password for a network, others suggest everything from reconfiguring DHCP settings to trashing the SystemConfiguration folder under Preferences, or even doing a fresh Lion install. A temporary remedy involves just switching to an Ethernet connection, if possible.

While the Lion rollout has proven smoother than some OS launches, it has not been without some trouble. Reported glitches have affected the likes of NAS drives or even the installation process itself.




by MacNN Staff

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Comments

  1. rexray

    Joined: Dec 1969

    +1

    Headline is misleading

    I read MacNN every day because I like the quality of the reporting, but this headline is misleading. Obviously Lion isn't the culprit if the people having the problems have been seeing the issue since Snow Leopard.

  1. facebook_Jonathan

    Via Facebook

    Joined: Jul 2011

    +6

    Not just Wi-Fi

    Since upgrading to Lion, I will have random times when the machine thinks it's not connected to the network for a minute or two, then resolves itself. This does not happen to any other devices connected to the WAP.

  1. TEB

    Joined: Dec 1969

    +3

    Old Network Settings

    Users with this issue should go into 'System Preferences' -> Networking and select their AirPort. Then go into 'Advanced'. Under the Airport > Preferred Networks remove your all networks and be sure to do this in the 802.1x tab as well. The reason being that Lion has a newer Network backend and old network setup conflicts with the newer settings. Once removed, you should be able to reconnect to your networks without any issues. This was something seen in all of the beta builds of the Lion and only tends to effect those upgrading.

  1. ravemac.com

    Joined: Dec 1969

    +3

    Working ok here

    iMac, MacBook Pro & Mac Pro. iMac and MacBook Pro are Wifi only and seem fine so it is not universal anyway.

  1. testudo

    Joined: Dec 1969

    -6

    Re: misleading

    I read MacNN every day because I like the quality of the reporting,

    Bwahahahahahahaha! Oh, that is funny. You made my day with that one. Thought of going on tour?

    but this headline is misleading. Obviously Lion isn't the culprit if the people having the problems have been seeing the issue since Snow Leopard.

    The article says that these reports add to reports from OTHERS with wifi problems in SL. It doesn't say they all had problems.

  1. testudo

    Joined: Dec 1969

    -1

    Re: Old Network Settings

    The reason being that Lion has a newer Network backend and old network setup conflicts with the newer settings. Once removed, you should be able to reconnect to your networks without any issues. This was something seen in all of the beta builds of the Lion and only tends to effect those upgrading.

    So, don't you think Apple could have fixed this, then? Or updated the data so it would work correctly? Or inform the user that upgrading could cause issues and just clear out all this old data anyway?

    Because most Mac users probably have never even seen the Network system preference nor would have an idea what to do there in order to get things to work.

  1. bdmarsh

    Joined: Dec 1969

    +2

    upgraded a couple, no issues

    I've upgraded a couple of MacBook Pro's one 13" and one 15", neither have seen this problem.

  1. sessamoid

    Joined: Dec 1969

    +2

    Upgraded with no problems

    including Macbook Pro, white Macbook, and Mac Pro tower. No Wifi abnormalities seen.

  1. HappySlug

    Joined: Dec 1969

    0

    Obviously not universal

    There must be a common denominator for the problem machines. System mod? Utility? Certain application? My 2010 MacBook Air upgraded fine with no noted issues and it operates wireless all the time on at least four different WiFi networks. But, to be fair, it's only 3 months old with only a small number of 3rd party apps and utilities. So far fewer variables.

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