henrijacobs

Q: Mountain lion wifi problems

I have just installed mountain lion.

All went good, but now i have à problem with wifi.

 

My connection is ok, i get an ip adress, but i cant get On internet.

 

Safari says it has no internet connection.

 

When i connect on ethernet i have internet.

 

Do anyone know what The problem is?

MacBook Pro, OS X Mountain Lion

Posted on Jul 25, 2012 2:13 PM

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Q: Mountain lion wifi problems

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  • by fwhofsteenge,

    fwhofsteenge fwhofsteenge Mar 23, 2013 5:59 AM in response to barbakan
    Level 1 (0 points)
    Mar 23, 2013 5:59 AM in response to barbakan

    With all due respect, this is not the problem we are talking about here. This thread is about certain Mac computers (more specific the newer iMacs) that are not able to maintain a stable WiFi-connection to any brand of router, not Apple-routers specifically.

    You are right that this problem started with the introduction of Lion/Mountain Lion on those iMacs. It has existed ever since, also with 10.8.2 and 10.8.3.

    AppleCare replaced the WiFi-card inside my iMac, the result was exactly the same problem. I was able to resolve this issue by following the advice of the manufacturer of my modem/router: 'switch off radio channels 12 and 13 and deactivate channels optimized for 300 Mbit/s, as these are not handled very well by certain WLAN adapters'. See my posting dd 14 mar 2013.

  • by barbakan,

    barbakan barbakan Mar 23, 2013 6:06 AM in response to fwhofsteenge
    Level 1 (4 points)
    Mar 23, 2013 6:06 AM in response to fwhofsteenge

    Thanks for the remark. I'll conduct further tests with my Airport Express and will post them here if it can be of any help to others.

  • by KennyMcCormack,

    KennyMcCormack KennyMcCormack Mar 25, 2013 7:51 AM in response to henrijacobs
    Level 1 (0 points)
    Mar 25, 2013 7:51 AM in response to henrijacobs

    After installing Mountain Lion I was unable to access the internet over Ethernet or WiFI - I think this was a problem with my Netgear Router configuration (nothing to do with the iMac)

     

    Previously I'd assigned the iMac a fixed IP address in the router's LAN setup page. 

     

    After installing Mountain Lion, the router didn't recognize the device (even after numerous reboots of both devices)

     

    Deleting the iMac from the router's LAN setup page fixed the issue for me.  I set the the iMac Networking settings to automatic / DCHP and all was OK

  • by barbakan,

    barbakan barbakan Mar 25, 2013 12:04 PM in response to KennyMcCormack
    Level 1 (4 points)
    Mar 25, 2013 12:04 PM in response to KennyMcCormack

    Well, it finally worked on my MacBookPro, after trying and trying again. I didn't do anything special. It suddenly started to work and has been fine since Saturday. Won't buy a new router then...

  • by fallingwalls,

    fallingwalls fallingwalls Mar 30, 2013 11:09 AM in response to digitalwhite
    Level 1 (0 points)
    Mar 30, 2013 11:09 AM in response to digitalwhite

    I have a MacBookPro / Mountain Lion with Xfinity Comcast - WI-FI was connected but no Internet.  Was driving me crazy and FINALLY FOUND THE SOLUTION!!!  Went into the router settings and changes the channel to channel 11.  YAY!!!  Works great.

  • by harrywynn139,

    harrywynn139 harrywynn139 Apr 5, 2013 12:02 PM in response to henrijacobs
    Level 1 (0 points)
    Apr 5, 2013 12:02 PM in response to henrijacobs

         After Months and Months of waiting for Apple to role out with an update and not doing so, I became very frustrated. But, I have finally found the Solution! The wifi problem is a defect in the software, and for those of us who own an iPhone, we know all about restoring the software. Essentially, you must do the same thing to your mac (re-install the OS). To do so, follow the steps on ths website: http://www.dummies.com/how-to/content/how-to-install-or-reinstall-mac-os-x-mount ain-lion.html 

     

         This will delete the defective software, and reinstall a fresh, new software. You will not lose anything on your mac during the process.

  • by yxz10,

    yxz10 yxz10 Apr 5, 2013 12:06 PM in response to harrywynn139
    Level 1 (0 points)
    Apr 5, 2013 12:06 PM in response to harrywynn139

    I have already tried that, hasn't worked for me.

     

    Also backing up to USB drive instead of Time Capsule only reduces the drops. I noticed that as soon as I want to sync my iPhone over Wifi the connection fails immediately. Really weird.

  • by fallingwalls,

    fallingwalls fallingwalls Apr 5, 2013 4:45 PM in response to harrywynn139
    Level 1 (0 points)
    Apr 5, 2013 4:45 PM in response to harrywynn139

    Sorry for your wifi troubles.  I was having troubles too and finaly realized if I changed the channel of my router (which I did - changed it from 1 to 11) maybe it would work and to my delight it works like a charm....no more wifi troubles, this was a few weeks ago.

  • by barbakan,

    barbakan barbakan Apr 6, 2013 8:45 AM in response to fallingwalls
    Level 1 (4 points)
    Apr 6, 2013 8:45 AM in response to fallingwalls

    Actually I had already tried that, forcing the use of channel #11 but it doesn't fix the problem permanently. It still occurs, from time to time, that I need to try for two or three mintues to get a connection to the Airport router.

  • by yxz10,

    yxz10 yxz10 Apr 12, 2013 7:53 AM in response to barbakan
    Level 1 (0 points)
    Apr 12, 2013 7:53 AM in response to barbakan

    That didn't do it for me, but it looks like I solved the problem by connecting to the Time Capsule 5 GHz explicitly. Time Machine Backups, iPhone iTunes Sync, everything works flawlessly now!

     

    As soon as I connect to the non-5GHz-Network the drops occur again! Haven't read this tip anywhere, I hope it might work for some of you too!

  • by kulinarisk,

    kulinarisk kulinarisk Apr 18, 2013 10:27 AM in response to yxz10
    Level 1 (0 points)
    Apr 18, 2013 10:27 AM in response to yxz10

    Got it working  a long time ago - don't know why or how. Then I bought a new TV and it would not connect to WiFi. I then set my airport to a non secure protocol and got my TV connected. Swiched back to WPA2- personal. Great!

    No :-( WiFi still works with the TV, but my MacPro pretends it's at a new home everytime.

    Now - whenever my mac slumbers or I restart, I have to connect manually. In settings it tells me that my network is open, even though its WPA2. Apple please fix. NOW!!!

  • by TheGuyintheProjectionBooth,

    TheGuyintheProjectionBooth TheGuyintheProjectionBooth Apr 18, 2013 12:25 PM in response to barbakan
    Level 2 (208 points)
    Mac OS X
    Apr 18, 2013 12:25 PM in response to barbakan

    Me too last week. It just started working and I have been holding my breath  ever since.

  • by kulinarisk,

    kulinarisk kulinarisk Apr 18, 2013 1:35 PM in response to TheGuyintheProjectionBooth
    Level 1 (0 points)
    Apr 18, 2013 1:35 PM in response to TheGuyintheProjectionBooth

    How did you get it to work?

  • by Senhor-Ron,

    Senhor-Ron Senhor-Ron Apr 20, 2013 2:07 AM in response to henrijacobs
    Level 1 (9 points)
    Mac OS X
    Apr 20, 2013 2:07 AM in response to henrijacobs

    After the latest ML update (10.8.3 (12D78)) everything works fine. Thought I´d mention that :-)

  • by masskevinjames,

    masskevinjames masskevinjames Apr 21, 2013 11:33 AM in response to henrijacobs
    Level 1 (14 points)
    Desktops
    Apr 21, 2013 11:33 AM in response to henrijacobs

    Constant network problems since 10.8.3 upgrade. I have gone through all the usual things. Power options. Raised everything up high as far as screen savers, and power options.

     

    STILL NOT WORKING.

     

    I would like apple to

     

    A. PROVIDE A **** FIX fot this

    B. Give me my money back.

     

     

    Example. Each time I want to connect from one IMAC to another IMAC in my same house. I have to go into finder and click on the computer I want to connect to, to wake the God **** thing up. Half of the time, this doesn't work.

     

    Then I try to ping the god **** thing and It's basically dead, till I physically go to the IMAC and move the mouse to wake the piece of crap up. I am going to contact the BBB as well as the attorney general and whoever I need to, to get my money back or get this fixed. Tired of this crap.

     

     

    IT'S 2013 APPLE. WAKE UP

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