tomstephens89

Q: OSX Yosemite Wifi issues

Hi there,

 

I upgraded my Macbook Pro Retina 15" (mid 2014 revision) to OS X Yosemite last night and am now having issues when using my home WiFi connection. Whilst it connects to either the 5Ghz or 2.4Ghz network, it is basically unusable. Web pages take minutes to load (if they even load at all), dropbox doesn't sync because it can't get a connection and even trying to get to the router config page is extremely slow and hit/miss.

 

Tethering to my iPhone seems to work ok, as does using my home network via wired ethernet.

 

Are any others having problems with Yosemite? Wifi was working fine on Mavericks.

 

Tom

MacBook Pro with Retina display, OS X Yosemite (10.10)

Posted on Oct 17, 2014 12:37 AM

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Q: OSX Yosemite Wifi issues

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  • by kivdev,

    kivdev kivdev Feb 1, 2015 7:06 AM in response to tomstephens89
    Level 1 (0 points)
    Feb 1, 2015 7:06 AM in response to tomstephens89

    Just updated to 10.10.2, but wifi is still dropping after a few seconds.... I have to connect to a router that extends the main router signal to get it working, but its slow.

  • by AndreasSt,

    AndreasSt AndreasSt Feb 1, 2015 8:00 AM in response to jndupuis1
    Level 1 (18 points)
    Apple TV
    Feb 1, 2015 8:00 AM in response to jndupuis1

    Bluetooth interference with WiFi on 2.4GHz is inevitable. But it should only have minor impact, because Bluetooth uses frequency-hopping to avoid inerference which WiFi doesn't.

     

    However I question the ability of the used silicon to do a proper WiFi channel-hopping (as obviously done by the AWDL interface). If the software needs dual radio then Apple should build in dual radio hardware.

     

    Gigabit Ethernet does also interfere with WiFi in some circumstances.

     

    Apple is clearly liable to not render the user's WiFi networks unusable.

  • by Akos G. Garai,

    Akos G. Garai Akos G. Garai Feb 1, 2015 8:33 AM in response to AndreasSt
    Level 1 (0 points)
    Feb 1, 2015 8:33 AM in response to AndreasSt

    What I think is that this is a hardware issue with Bluetooth and Wi-Fi (In Maverics it's not a problem as AWDL is not used that extensively, but in Yosemite it's probably all tied in). Broadcom might have produced some better batches and some worse batches. Also  the controllers or the units (cards) were soldered together sometimes better and sometimes with greater tolerances.

    This is why it's only effecting certain people and not the whole lot and this is why there's little chance that it can be fixed from software (OS X).

     

    Now my only question is: If I take my Macbook in to an Authorised Service Provider than what do I need to tell them to get the module/board/card replaced?


    (Yes, I'm through with tweaks / full OS reinstall / trying another spot ; another place ; another router/AP / sending reports and logs to Support. I'm done with this big time. Wasted enough time and won't be posting any more in this topic).

  • by jndupuis1,

    jndupuis1 jndupuis1 Feb 1, 2015 8:54 AM in response to AndreasSt
    Level 2 (470 points)
    Feb 1, 2015 8:54 AM in response to AndreasSt

    Certainly. Built in dual radio hardware would be a solution. The frequency hopping of Bluetooth would explain the dropouts, speed up and slow downs of the Wi-Fi connection. I also agree that "Apple is clearly liable not to render the user's WiFi networks unusable." I would like to add that Apple should hold Broadcom responsible for a viable and usable board that produces less RF interference within itself and surrounding system components. Even at the risk of recall. There were only slight hints of this issue in Mavericks. Yosemite just may have inevitably brought it to surface.

  • by dszakal89,

    dszakal89 dszakal89 Feb 1, 2015 9:05 AM in response to tomstephens89
    Level 1 (0 points)
    Feb 1, 2015 9:05 AM in response to tomstephens89

    I have been facing the issue for one and half weeks (last week of 10.10.1 and first week of 10.10.2), let me write down what helped and what didn't help:

     

    These didn't solve the issue:

    -removing system configuration files

    -removing the wifi interface in system preferences

    -setting airdrop to "no one"

    -setting all nearby airdrop visibilities to "no one"

    -turning off awdl via the command line

    -turning off continuity/handoff

    -turning off bluetooth

    -resetting PRAM, SMC, etc.

     

    These solved the issue together only (by themselves didn't):

    -wifriedX (by itself it is not enough, anyway source: https://medium.com/@mariociabarra/wifriedx-in-depth-look-at-yosemite-wifi-and-aw dl-airdrop-41a93eb22e48 )

    -choosing the right (earlier working) channels for 2.4 GHz and 5 GHz (use option+click wifi icon, Diagnostics and press cmd+4 for best channel recommendation)

    -opening a terminal and letting a command run in an infinite loop:

    $ ping 192.168.1.254

    ##Yes, this is required, to "disable" powersaving, see also: http://superuser.com/questions/826338/macbook-air-constanty-drops-wifi-connectio n

     

    Working since 2 days ago. Meanwhile this:

    -Bluetooth is on (actually 2 devices connected)

    -Handoff is on, using continuity with iPhone works fine

     

    And I forgot: all this on Early 2014 CTO Macbook Air

  • by j-m-d,

    j-m-d j-m-d Feb 1, 2015 9:06 AM in response to jndupuis1
    Level 1 (28 points)
    iLife
    Feb 1, 2015 9:06 AM in response to jndupuis1

    can you clarify a bit - is the problem chipset in the iMac/Mini/Macbook etc, or in the Airport etc ??? or both ?

     

    Did Broadcom make a separate PCB, or just the chips ???

     

    Problems like this are notoriously difficult to assign responsibility for - are the traces/shielding done correctly ? by whom ? did Apple place an unrelated PCB too close, etc

     

    This is a pi**ing contest that could go on for years, and if a HW swap is the required fix, I would not hold our breath for any joy from Apple, they are not going to own up to that.

     

    The most we can probably hope for is some SW configuration switch that chooses "old timey working Mavericks WiFi/BT" or "new style that lets you do Handoff/Continuity", and that would take a long, long time for them to push out.

  • by romcodox,

    romcodox romcodox Feb 1, 2015 9:19 AM in response to Akos G. Garai
    Level 1 (0 points)
    Feb 1, 2015 9:19 AM in response to Akos G. Garai

    no isn't hardware problem. on my mac all was working very well, but all changed after this 10.10.2 update

  • by j-m-d,

    j-m-d j-m-d Feb 1, 2015 9:27 AM in response to romcodox
    Level 1 (28 points)
    iLife
    Feb 1, 2015 9:27 AM in response to romcodox

    romcodox wrote:

     

    no isn't hardware problem. on my mac all was working very well, but all changed after this 10.10.2 update

    well, new SW can expose a latent HW issue that was never stressed before. I mean if the chipset was never able to do "teletransportation", you wouldn't know until new SW tried to do it.

     

    If the new Handoff/Continuity features exposed a problem is it because the chips can't do it but should be able to, weren't designed to do it, or the SW isn't doing it correctly ?

  • by dszakal89,

    dszakal89 dszakal89 Feb 1, 2015 9:34 AM in response to j-m-d
    Level 1 (0 points)
    Feb 1, 2015 9:34 AM in response to j-m-d

    Read my "fix" above, didn't need to disable handoff/continuity, I could continue this comment on iPhone without having the fear of wifi disconnecting again.

     

    Also are you sure that all Pros, Airs and iMacs can have wrong wifi chips? And worked for me for a long time, why not working now?

     

    So no, I'm 99% sure that a hardware issue alone wouldn't do it, mostly because ADWL disable didn't solve the disconnecting issue, and that is supposed to be the "second interferring waveline".

  • by kemsei,

    kemsei kemsei Feb 1, 2015 9:40 AM in response to tomstephens89
    Level 1 (0 points)
    Feb 1, 2015 9:40 AM in response to tomstephens89

    Hello,

     

    Not sure if anybody cares but my wifi connection has been running flawlessly for the past 72 hours now. So for those who haven't found a workaround yet, I would strongly advise trying with a Wifi repeater.

     

    Cheers,

  • by romcodox,

    romcodox romcodox Feb 1, 2015 9:46 AM in response to j-m-d
    Level 1 (0 points)
    Feb 1, 2015 9:46 AM in response to j-m-d

    well, new SW can expose a latent HW issue that was never stressed before. I mean if the chipset was never able to do "teletransportation", you wouldn't know until new SW tried to do it.

     

    If the new Handoff/Continuity features exposed a problem is it because the chips can't do it but should be able to, weren't designed to do it, or the SW isn't doing it correctly ?

     

    I have newest apple hardware ( mackbook retina 2014 ) and newest software version, thing you so apple don't check compatibility of his own parts ? I thing this is just software bug

  • by j-m-d,

    j-m-d j-m-d Feb 1, 2015 9:57 AM in response to romcodox
    Level 1 (28 points)
    iLife
    Feb 1, 2015 9:57 AM in response to romcodox

    romcodox wrote:

     

    well, new SW can expose a latent HW issue that was never stressed before. I mean if the chipset was never able to do "teletransportation", you wouldn't know until new SW tried to do it.

     

    If the new Handoff/Continuity features exposed a problem is it because the chips can't do it but should be able to, weren't designed to do it, or the SW isn't doing it correctly ?

     

    I have newest apple hardware ( mackbook retina 2014 ) and newest software version, thing you so apple don't check compatibility of his own parts ? I thing this is just software bug

    I said no such thing, reread my last sentence. Do they test the functionality of their SW ???

  • by Akos G. Garai,

    Akos G. Garai Akos G. Garai Feb 1, 2015 11:05 AM in response to j-m-d
    Level 1 (0 points)
    Feb 1, 2015 11:05 AM in response to j-m-d

    Good grief...

     

    Just read the last line of the BCM4360 feature set...

    (Well that's what I have in my MBA as per http://en.wikipedia.org/wiki/AirPort#Integrated_AirPort_Extreme_802.11ac_cards)...

     

    http://www.broadcom.com/products/Wireless-LAN/802.11-Wireless-LAN-Solutions/BCM4 360

     

    • 1.3 Gbps PHY rate performance offering over 3x performance vs. three stream 802.11n devices
    • Dual-band operation compatible with legacy 802.11n networks
    • 80 MHz wide bandwidth that is 2x wider than current 802.11n solutions
    • 256-QAM, a higher modulation scheme that increases data transfer efficiency
    • 802.11ac-compliant transmit and receive Beamforming for extended coverage for 802.11ac and legacy devices
    • Low Density Parity Check (LDPC) Codes for increased rate at range
    • PCI Express® 2.0 host interface
    • Enhanced Bluetooth® coexistence interface support for seamless BT + 5G WiFi operation

     

     

    OK...no more questions...but at least Apple should make it clear that for Airport Extreme 802.11ac equipped MacBooks 2.4GHz Wi-Fi and BT are a NO GO (or at least expect "less seamless operation")...

  • by AndreasSt,

    AndreasSt AndreasSt Feb 1, 2015 11:51 AM in response to Akos G. Garai
    Level 1 (18 points)
    Apple TV
    Feb 1, 2015 11:51 AM in response to Akos G. Garai

    Akos G. Garai wrote:

     

    • Enhanced Bluetooth® coexistence interface support for seamless BT + 5G WiFi operation

     

    5G WiFi actually stands for 802.11ac WiFi, not 5GHz WiFi. Although 802.11ac only works on 5GHz.

    Nevertheless, Apple should only roll out software features that work in the field and don't break essential features like networking.

    Too bad the AirPort products do not provide any diagnostics features and don't allow easy(!) separation of 2.4GHz and 5GHz networks, so most connections will default or fall back to 2.4GHz.

  • by jennybee93,

    jennybee93 jennybee93 Feb 1, 2015 12:20 PM in response to tomstephens89
    Level 1 (0 points)
    Feb 1, 2015 12:20 PM in response to tomstephens89

    Not sure if this will work for everyone, and sorry if lots have people have already said but for me DELETING ALL BROWSER EXTENSIONS works. Straight away as soon as they were deleted my internet speed came back, and that's after months of no internet. Genuinely just on chrome- 'settings' 'extensions' and then deleting them. Sad about adblock but I'd rather have ads with working internet.

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