sander81
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Q: iMac 12,2 (mid 2011) airport (wireless) problem

I bought this week an iMac Mid 2011.

I have done every update from " software update", but i have an issue with the wireless connection.

Sometime the wi-fi connection freezes and internet doesn't work (ping with router fails). To solve I have to disconnect airport and re-connect.

The router wireless works (i have 4 pc + 2  mac + iphone, and i have this problem only with this iMac). In windows (bootcamp) wireless works fine.

Yesterday, when i opened Network Utility, opening the airport interface (en1) I had a kernel panic (this happened 2-3 times). So I reinstalled MacOsX.

Today I have the same issue with the wi-fi, but when i open network utility i have not kernel panic.

 

Someone has this problem?!

 

Solutions? Next week I'll call apple support to see if this is a known problem

iMac, Mac OS X (10.6.7)

Posted on May 7, 2011 5:35 AM

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sander81

Q: iMac 12,2 (mid 2011) airport (wireless) problem

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  • by Kricki,

    Kricki Kricki Jul 19, 2011 4:32 AM in response to Simulator
    Level 1 (0 points)
    Jul 19, 2011 4:32 AM in response to Simulator

    According to my experience manually changing the channel does not lead to a sustainable bug fix but provides a stable connection for some days. Don't ask me why but the same effect applies for other sorts of resets.

     

    The only sustainable fixes I heard about are to disable 300MBit (or comparable) optimization options in some routers or instead disable (or at least reduce) WiFi encryption.

     

    And - for sure - there is still hope that Lion fixes the bug by providing adequate drivers...

     

     

    <Edited by Host>

  • by BooksandCovers,

    BooksandCovers BooksandCovers Jul 19, 2011 3:00 AM in response to Kricki
    Level 1 (0 points)
    Jul 19, 2011 3:00 AM in response to Kricki

    I just thought you should know... Lion FIXES the issue. When it's installed, a pop up (much like the rosetta install) pops up and asks if you want to install something similar to "cvmdsnresponder" (that's not exact, don't try google it) and when I said yes.. my whole world changed!!!

     

     

     

    Not a single dropout in 5 days so far!

  • by LOtang,

    LOtang LOtang Jul 19, 2011 5:50 AM in response to Kricki
    Level 1 (0 points)
    Jul 19, 2011 5:50 AM in response to Kricki

    Update: I am on day 5 without a single dropout, or any hanging in my iMac connection. Forcing my airport ex to broadcast in only G has worked well so far. Still running wpa2. Hope lion fixes too, feels wrong to have all the hardware to broadcast in N and not be able to use it.

  • by Kricki,

    Kricki Kricki Jul 19, 2011 2:30 PM in response to LOtang
    Level 1 (0 points)
    Jul 19, 2011 2:30 PM in response to LOtang

    As Apple has just confirmed to launch Lion tomorrow we will all be smarter soon...

  • by Farthen,

    Farthen Farthen Jul 20, 2011 11:25 AM in response to sander81
    Level 1 (0 points)
    Jul 20, 2011 11:25 AM in response to sander81

    I can reproduce the exact same problem with Lion. It does not fix the issues, at least not for me.

  • by _R_,

    _R_ _R_ Jul 20, 2011 9:59 PM in response to sander81
    Level 1 (0 points)
    Jul 20, 2011 9:59 PM in response to sander81

    Just bought a 2011 27" iMac eariler this week...

    Here is my setup and my symptops

    Router: Netgear WNDR3700 (Dual Band) broadcasting seperate G and N networks

     

    2010 13" MBP can connect and use both N and G networks no problem.  (I run N since I have a network drive)

     

    27" iMac can connect to N according to the wifi on the menu bar, but it doesn't do anything, everything times out, connects to G network no problem

     

    I've tried changing channels, transfer speeds, security settings on the router for the N network and the iMac still won't do anything except connect to the network... also tried manual settings, and every checkbox on and off in Networks (System Prefs), still nothin...

     

    Running 10.6.8 or 10.7 (installed it today hoping it would fix the problem) makes no difference...

    G works great for both iMac and MBP (but slow transfer speeds to network drive)

    N only works for the MBP

     

    hopefully a solution will come out... it's kinda annoying...

  • by wifiguru,

    wifiguru wifiguru Jul 20, 2011 10:22 PM in response to _R_
    Level 2 (240 points)
    Jul 20, 2011 10:22 PM in response to _R_

    Are you using WPA2-Personal as the security method ? Check and try that if you aren't.

  • by nmonmymac,

    nmonmymac nmonmymac Jul 20, 2011 10:45 PM in response to Farthen
    Level 1 (0 points)
    Jul 20, 2011 10:45 PM in response to Farthen

    For the problem I had with the 802.11n with my Cisco AP1142N, Lion seems to have fixed my problems.  I am able to sustain >100Mb/s with 802.11n / WPA2-AES on both 5Ghz and 2.4Ghz.    The errors that my AP was reportings seems to have subsided. (See my previous posts).

     

    I will continue to do some testing, but at least for the problems that I was having with wireless have been resolved.  Not happy I had to spend $30 for it, but figured I would have upgraded at some point anyways.

     

    If anything changes, I will let everyone here know.

  • by Farthen,

    Farthen Farthen Jul 21, 2011 3:22 AM in response to wifiguru
    Level 1 (0 points)
    Jul 21, 2011 3:22 AM in response to wifiguru

    Yes, I do use WPA2-Personal. But think i have the 300Mb/s issue others have described.

  • by _R_,

    _R_ _R_ Jul 21, 2011 6:40 AM in response to wifiguru
    Level 1 (0 points)
    Jul 21, 2011 6:40 AM in response to wifiguru

    WPA2-PSK [AES] is my current setting... (it's the lowest security option I have on the router)

    I've tried with it off as well...

    also tried 300 speed, 130 speed, and 54 speed...

     

    all same results...connects according to the wifi icon, but won' let me do anything, nothing loads or connects

  • by ezdanny,

    ezdanny ezdanny Jul 21, 2011 9:34 AM in response to sander81
    Level 1 (0 points)
    Jul 21, 2011 9:34 AM in response to sander81

    I´m really tired about this issue. Hoping that Lion fixes it but another 24 euros to the trash. Monday I´ll be at the store throwing the imac in and taking my money back.

     

    I´m very dissapointed with the mac service.

     

    Just have lost a 18 year client.

     

    By the way, with Lion the problem is worst, every 5 minutes I have to turn off/on airport.

  • by wifiguru,

    wifiguru wifiguru Jul 21, 2011 9:53 AM in response to _R_
    Level 2 (240 points)
    Jul 21, 2011 9:53 AM in response to _R_

    Have you checked your DNS ? USe 8.8.8.8 and 8.8.4.4 for your DNS and try.

  • by _R_,

    _R_ _R_ Jul 21, 2011 9:05 PM in response to wifiguru
    Level 1 (0 points)
    Jul 21, 2011 9:05 PM in response to wifiguru

    just tried...same thing, connects to wifi, nothing loads

  • by nmonmymac,

    nmonmymac nmonmymac Jul 22, 2011 11:28 AM in response to _R_
    Level 1 (0 points)
    Jul 22, 2011 11:28 AM in response to _R_

    _R_

    what IP address did you receive from your router? Can you open a terminal window and ping the internal IP address of your router ?  

  • by Trexie,

    Trexie Trexie Jul 22, 2011 11:45 PM in response to sander81
    Level 1 (0 points)
    Jul 22, 2011 11:45 PM in response to sander81

    Hi just want to share that I already update yesterday... and so far no disconnected like before. and I keep testing if any update will post again.

     

    but just wanna share that my update with lion is FIX the wifi problem.

    no setting. just update the lion and test the wifi... is working!

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