Macbook pro retina 15 after update OS X 10.9.3 to 10.9.4 can't connect wifi with Channel Width 40 HMz

macbook pro retina 15 after update OS X 10.9.3 to 10.9.4 can't connect wifi with Channel Width 40 HMz

That's odd. I assume this is the 5 GHz band, right?
Have you tried changing the router to do auto 20/40?
Have you tried deleting and reconnecting to the wifi network?

Similar Messages

  • HT4199 this still didn't fix iPad connectivity after updating to iOS 6.0.1 !!! intermittent wi-fi connection, even with a direct line-of-sight to the router.

    "HT4199: iOS and OS X: Recommended settings for Wi-Fi routers and access points"
    this still didn't fix iPad connectivity after updating to iOS 6.0.1 !!! intermittent wi-fi connection, even with a direct line-of-sight to the router.

    Some things to try first:
    1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
    2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
    3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
    4. Go into your router security settings and change from WEP to WPA with AES.
    5.  Renew IP Address: (especially if you are droping internet connection)
        •    Launch Settings app
        •    Tap on Wi-Fi
        •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
        •    In the window that opens, tap on the Renew Lease button
    6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
    http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
    ~~~~~~~~~~~~~~~~~~~~~~~~~
    Wi-Fi Fix for iOS 6
    https://discussions.apple.com/thread/4823738?tstart=240
    iOS 6 Wifi Problems/Fixes
    How To: Workaround iPad Wi-Fi Issues
    http://www.theipadfan.com/workaround-ipad-wifi-issues/
    Another Fix For iOS 6 WiFi Problems
    http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
    Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
    Fix For iOS 6 WiFi Problems?
    http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
    Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
    http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
    How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
    http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
    iOS 6 iPad 3 wi-fi "connection fix" for netgear router
    http://www.youtube.com/watch?v=XsWS4ha-dn0
    Apple's iOS 6 Wi-Fi problems
    http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
    ~~~~~~~~~~~~~~~~~~~~~~~
    How to Boost Your Wi-Fi Signal
    http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
    Troubleshooting a Weak Wi-Fi Signal
    http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
    How to Fix a Poor Wi-Fi Signal on Your iPad
    http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
    iOS Troubleshooting Wi-Fi networks and connections  http://support.apple.com/kb/TS1398
    iPad: Issues connecting to Wi-Fi networks  http://support.apple.com/kb/ts3304
    WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
    How to Fix: My iPad Won't Connect to WiFi
    http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
    iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
    iOS: Recommended settings for Wi-Fi routers and access points  http://support.apple.com/kb/HT4199
    How to Quickly Fix iPad 3 Wi-Fi Reception Problems
    http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
    iPad Wi-Fi Problems: Comprehensive List of Fixes
    http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
    Connect iPad to Wi-Fi (with troubleshooting info)
    http://thehowto.wikidot.com/wifi-connect-ipad
    Fix iPad Wifi Connection and Signal Issues  http://www.youtube.com/watch?v=uwWtIG5jUxE
    Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
    How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
    Unable to Connect After iOS Update - saw this solution on another post.
    https://discussions.apple.com/thread/4010130
    Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
    ~~~~~~~~~~~~~~~
    If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
     Cheers, Tom

  • Brand new macbook pro retina issues after yosmite update

    My Macbook pro retina was working fine until I had Mavericks, but after updating to Yosemite the following problems has started.
    Touch pad stops responding now and then
    Fails to open launchpad sometimes
    Boot camp wizard is missing
    Scrolling doesn't work quite often in Safari
    Fan starts running when cpu is cool without load, but fails to run when hot while playing games
    Battery performance is dropped.
    Computer has become comparatively sluggish.
    Doesn't display 'about this mac'.

    I did call them and it seems there is no solution except sending it back to them and getting a new one.
    This is by far the most strange issue I have seen. Seems more like a hardware issue than software.
    Thanks for you suggestion though. I will post an update ones this case gets resolved.

  • Macbook Pro Retina crashes after SMC Reset

    Hey guys. My macbook pro retina is constantly running its fan at full speed at random times. The fan is always running on high even when I do not have any background apps running. And every time I try to perform SMC reset, my macbook crashes and I have to reinstall OS X all over again. Some other issues are that I cannot update my computer without crashing and having to end up re-downloading the software again. Also, when starting up my macbook on the new Yosemite, the loading bar when logging in gets stuck, which again results in me reinstalling the software or restoring from an old backup. People have suggested replacing the SSD in the computer but I believe it may be the motherboard that may need to replace. I own a Macbook Pro Retina 15" early 2013 running OS X 10.10. And everything is factory when it comes to hardware.

    I just bought a new charger and it appears to be working, so looks like that problem was not with my MBP but rather with the charger itself.
    I am noticing that my fan is a little quieter now, but still doesn't sound normal. I have looked at Activity Monitor and nothing is using a lot of CPU at all (highest is Chrome at 6%). The MBP does get hot when the fan is going. I have looked at videos for cleaning/replacing the fan, which I think may be a good idea, but I don't have the proper tools at this time. It's something I'll keep looking into.
    Also, Chrome and Mail both seem to be working now, randomly, even though I haven't done anything else. It's weird that they both stopped working immediately after I did an SMC reset, but maybe it's just a coincidence?
    I will do another SMC and PRAM reset if further problems persist. Thanks for all the help!

  • Black screen on MacBook Pro Retina Display after installing Moutain Lion. Need Help!

    My macbook pro (retina) screen went black after I installed Mountain Lion.
    I got a HDMI cable to another monitor and the image worked nicely there.
    But i cant get it back on my MacBook Pro! I tried taking out the HDMI cable, restarting, searching on settings configs..
    What should I do?
    Are there any drivers i should install to get image back on my MacBook Pro Retina Display?
    Has this happened to anyone else?
    Thanks in advance for all the help.

    That helped me finding other people with similar problems.
    But there is a major difference!
    -They have a black screen after they login.
    -My screen is black NOW! And I'm only using my BRAND NEW rmbp with the HDMI cable to my TV!
    This isnt good at all and I would like to solve it asap..
    I tried reinstalling Mountain Lion, taking out the hdmi cable and rebooting many times.
    Until now, nothing!
    Is my screen broken or maybe my video card has some problems?
    I hope not! I just traveled from the US to Brazil and I dont want to search for an Apple Store here.
    Any tips or ideas are welcome, thank you.

  • Macbook pro keeps freezing after updating to Maverick

    my 1 year old macbook pro keeps freezing after i updated from mountain lion to maverick.
    all the time i had mountain lion i can remember maybe once where my mac froze. now, it froze probably 5 times in the last 5 days.
    how can i fix this, or better still - how can i revert back to mountain lion? no, i never used time machine and i have 90gb left on my disc.
    annoying.

    See ds store's user tip -> https://discussions.apple.com/docs/DOC-6162.
    Good luck,
    Clinton

  • Macbook Pro Retina display Garageband update error message.

    I recently purchased a new Macbook Pro with retina display, and after the initial setup it prompted me to update the iLife applications,specifically Garageband to the new 10.0.2 . I only updated Garageband, but on opening the app after the update installed, it displayed an error saying the downloaded file was corrupt and asked me to delete Garageband and try again. My question is,how do i delete Garageband considering its a native app,moreover why was there an error displayed and how do i correct it?

    Open the Mac App Store and click on the "Purchases" pane.
    You should see a list of all the stuff you are entitled to re-download whenever you please.
    Knowing that you can re-download, do not worry about deleting things.
    Click on the Updates pane, and see if the Update is still available, if it is, try re-applying the Update.

  • IWork on Macbook Pro Retina display needs updating, text is blurry?

    I just purchased the new Macbook Pro with retina display and I am surprised there is no update for iWork. Text appears blurry and is very tough to use.

    Of course, but I wonder why Apple did not update/upgrade iWork together with the new product, this is their basic office suite. Don’t you find this strange?
    I don't find it strange. I think Apple chose not to update iWork last week because they're also updating it again in late July. That is, they'd be updating iWork twice in 4 weeks - first to work with Retina MBPs and then again to work with iCloud in OS X Mountain Lion.
    We have been waiting for an iWork upgrade for at least one year.
    Maybe the traditional update scheme of "minor updates (free) > new version (not free) > minor updates (free)  > ..." is coming to an end. Apple are not _required_ to do this any more with the Mac App Store. They can do the same as most other developers. That is, have one app and continue to update it indefinitely.
    Dale

  • New Macbook Pro, Safari crashing after update, every time

    I am a fairly new Mac user.  I have had my macbook pro for 4 months.  Three days ago, I got a window popping up that asked if I would like to update now.  I hit ok, went back to making dinner.  A few hours later, i opened safari. It opened to yahoo, i then went to mail, and then hit my facebook bookmark.  Safari froze.  I got the circle thing and it sat like that for 5 minutes.  I finally forced quit and hit the report problem.  It has done the same thing now for 3 days, only now it freezes the minute i hit any any link at all, immediately!!!  I thought it may have something to do with the new Lion thing (i am really a novice) so I bought that and installed it yesterday.  Still same thing.  Firefox works fine.  I am using that now.  Nothing else seems affected other than Safari.  The only add on i have ever put on safari that i know about is lastpass.  i can't even get to my safari pref now b/c it locks up before i can hit it.  I even tried going to apple and redownloading safari.  I don't know how to uninstall and reininstall.  Can anyone help?

    The only add on i have ever put on safari that i know about is lastpass.
    That's most likely the glitch.
    Click here >  http://helpdesk.lastpass.com/uninstalling-deleting-lastpass/
    If after you uninstall LastPass Safari still crashes, follow the instructions here >  Safari: Unsupported third-party add-ons may cause Safari to unexpectedly quit or have performance issues

  • Macbook Pro not booting after update. ''Disk Utility can't repair disk''. Help needed!

    I have recently updated my macbook pro as I had some pending software updates. I left it to do the job over night and the next day I noticed it was not letting me sign in to my account session as usual.
    I restarted the computer and ever since then when I boot it, it just shows the apple grey screen with a bar that loads to about a 3rd and then it turns off again. I have contacted apple but they were unable to help me with this.
    So far I have tried to:
    1. Re-install OS X 10.8 - but it says the disk is locked or OS X cannot be installed on Recovery HD.
    2. Verify and Repair the disk and I errors but it cannot fix them. Some are:
                   'invalid leaf count''
                   ''missing thread record''
                   ''incorrect number of file hard links''
                   ''overlapped extent allocation''
              and it finally says ''the volume Macintosh HD cannot be repaired'' Error: ''Disk Utility can't repair this disk.. disk, and restore your backed up files.
    I would like to know a way to back up my files so that i can completely restore the disk without any data loss as I havent backed up for a while!
    If anyone has any solution to this issue it would be much appreciated!

    I just ran the Disk Utility, and cannot very disk. It gives me an error message;
    Error: The underlying task reported failure on exit
    1 HFS volume checked
    Volume needs repair
    and when I run the repair, this is the message:
    The volume GERRARD could not be repaired.
    Error: The underlying task reported failure on exit
    1 HFS volume checked
    1 volume could not be repaired because of an error
    Repair attempted on 1 volume
    1 volume could not be repaired
    Prior to running Disk Utility, I have already tried DiskWarrior, and could not repair my disk. Anyway I can fix this problem??? Formatting the disk would be my last option (though I am unsure if it will fix the problem). Any advise would be greatly appreciated. Meanwhile, I will continue to back up my file, and delete unused data and try to run it again.
    Thank you all very much for any input.
    Cheers,
    Matt

  • Keyboard backlight for MacBook Pro not working after update.

    So I had an update for my Mac pop up yesterday, I completed the update and all was fine. I've just turned on my MacBook Pro again today and there's no backlights on the keyboard. I've tried adjusting it using the F5 and F6 keys but nothing happens other than a pop up on the screen (Pic attatched below) any ideas as to how to fix this? Thanks. :-)
    PROBLEM IS NOW FIXED! :-)

    SMC Reset
    http://support.apple.com/kb/ht3964

  • MacBook Pro, USB issues after update to OSX 10.9.2

    09 MacBook Pro. OSX 10.9.2 . Recently updated.
    Flash drives and Go Pro Camera not appearing in Finder or iPhoto for import. However the flash drive appears under, System info/Hardware/USB.
    I read about many ideas such as resetting, PRAM, rebooting, etc.... About 5 hours of reading and trial and error last night. Nothing worked.
    I do have a battery that needs to be replaced, but my trial and error occurs while plugged in, so there is enough power. This did not begin to happen until I updated OSX.

    So far as the Go Pro connectivity, it was an issue on the Go Pro end. In order for the Go Pro to be found, I needed to remove all accesories. iPhoto still does not pick it up, although Finder did.
    Flash Drives still not found.
    Odd as I remember I used to be able to just plug in a device that had anything to do with pictures or videos and iPhoto would just automatically detect it and ask to import.

  • MacBook Pro running slow after update

    My MacBookPro is suddenly running really slow, the spinning beach ball is appearing all the time.
    I can't use safari, I can't use office, everything colapse, is awful.
    The info of my system is:
    MacBook Pro 10.8.3 Intel Core i7
    Memory: 4GB
    Capacity: 499,25 GB
    Free space: 416,11 GB
    Used space: 83,14 GB
    I verified the disk and aparently everything is running smoothly, I am using the ClamXav and until now he found 2 infections.
    I check the activity monitor and those are the results:
    CPU
    % usuario: 9,22
    % sytem: 3,30
    % inactive: 85,24
    MEMORY
    free: 1.8MB
    wired: 986,7 MB
    active: 1,52 GB
    inactive: 1,51GB
    used: 3,99 GB
    virtual memory: 227,97GB
    page ins: 3,72GB
    page outs: 41,83 GB
    Swap used: 16,03 GB
    I would appreciate any help
    thanks
    Monica

    Troubleshoot the spinning beach ball 

  • After updating my mac from snow leopard to mountain lion, i can not connect to the internet anymore

    After updating my mac book pro from snow leopard to mountain lion, i can not connect to the internet anymore ;(
    Anyone know what is wrong with it??
    Is something wrong with mountain lion or the wifi itself????
    HELP PLEASE!!
    I need to use the internet desperately but i cant...
    Thank you so much xxx

    Hi galleryskins,
    The article below may be able to help you with this issue.
    Click on the link below to see more details and screenshots. 
    I've quoted some helpful highlights for you:
    OS X Mountain Lion: Zoom content on the screen
    Zoom with a mouse or trackpad
    To zoom in and out, hold down the modifier key you specified while you perform the scroll gesture.
    For example, if you have a trackpad and used the default settings, zoom in by holding down the Control (^) key while you drag two fingers up on the trackpad. Zoom out by holding down the Control key while you drag two fingers down on the trackpad.
    If you chose Picture-in-picture zooming, a window appears near the mouse cursor with the magnified image. If you chose Fullscreen zooming, the entire screen displays the magnified image.
    I hope this information helps ....
    Have a great day!
    - Judy

  • Macbook pro retina slow after 10.8.2 update

    updated yesterday my mbp retina, and while my mac partition works fine, my windows system has started IMMEDIATELY lagging.... games i was running at 50FPS for the past month... suddenly dropped down to 5... no patching or updates or any changes..... all in bootcamp.  that's the only thing i've changed....
    anyone got any hints on this?
    i saw someone posted about resetting the SMC... that didn't do anything for me.....or perhaps i'm doing it wrong?  can someone clarify how to reset the SMc?
    i tried holding left shift, alt, ctrl and power same

    UPDATE: Temporary Solution.
    http://us.battle.net/d3/en/forum/topic/6606352204?page=2
    It hes something to do with SMC problem. You have to reset it.
    "This is how on the Retina :
    Shut down the computer.
    Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
    On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
    Release all the keys and the power button at the same time.
    Press the power button to turn on the computer.
    Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC."

Maybe you are looking for