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  • pookyba Level 1 Level 1 (0 points)

    Terminal is something like command prompt in windows...to open pres CMD+space and type terminal, after open just type ping 8.8.8.8

     

     

    @juato4  i try SL kext and Lion 10.7.4 but Wifi still drops

  • maurofromparma Level 1 Level 1 (0 points)

    thanks. I have just done so. Do I need to press return as well at the end?

    sorry for the stupid questions

  • pookyba Level 1 Level 1 (0 points)

    Yes, after every command in terminal you must hit enter to execute that command. You can also use Network utility to do this.

    2012-08-25_17-54-32.jpg...

  • maurofromparma Level 1 Level 1 (0 points)

    thanks. I will try this.

  • gphonei Level 1 Level 1 (0 points)

    gsspike wrote:

     

    Well I had a nice long reply all typed in and I hit send and everything locked and wifi dropped.  I'm saying pretty much the same thing, we need to post our finding and problems not trash apple or insist you have the only fix.  

    People have convinced unknowing others to buy a new router, change lines of code, remove any trace of certain programs.

    The post from Augend reflecting on his ISP problem, and MacsSa having similar issues, puts an interesting spin on this too. 

     

    Ultimately, you have ot work through the issues, not just try everything that's been posted here.

     

    Because this is a technical issue, which needs technical skill to walk through checking on each part of your WiFi and ISP connection, it's hard for people to work out what is going on.

     

    The WiFi mechanism is just a "wire" over radio, to connect your computer to your router, without a wire (wire less).  If you haven't tried using an ethernet cable to see if you have the same problem, you might find something interesting by doing that.

     

    If you have no problems with an ethernet cable, then it may be just the wireless mechanism.

     

    Check your router to make sure you have the latest firmware for it.  There is information for doing this in your manual, or your ISP can provide guidance on doing that.

     

    Once you have the latest firmware loaded, you can check that each piece of the "network" technology going over wireless works.

     

    If your web browser tells you "you are not connected to the internet", then open a Termina applicationl window (Look in Applications in the Utilities folder). In that window, while the browser is still telling you "you are not connected to the internet", when you press the reload button, type "ping -c 4 8.8.8.8" and hit return.  You should see

     

    PING 8.8.8.8 (8.8.8.8): 56 data bytes

    64 bytes from 8.8.8.8: icmp_seq=0 ttl=48 time=27.847 ms

    64 bytes from 8.8.8.8: icmp_seq=1 ttl=48 time=27.177 ms

    64 bytes from 8.8.8.8: icmp_seq=2 ttl=48 time=27.003 ms

    64 bytes from 8.8.8.8: icmp_seq=3 ttl=48 time=27.760 ms

     

    Then your wireless connection IS WORKING, but "DNS" or some other packets are being dropped by your ISP.

     

    If you see

     

    PING 8.8.8.8 (8.8.8.8): 56 data bytes

    ping: sendto: No route to host

    ping: sendto: No route to host

    Request timeout for icmp_seq 0

    ping: sendto: No route to host

    Request timeout for icmp_seq 1

    ping: sendto: No route to host

    Request timeout for icmp_seq 2

     

    --- 8.8.8.8 ping statistics ---

    4 packets transmitted, 0 packets received, 100.0% packet loss

     

    Then your wireless network really is "not working".  Packets of data are not going out.

     

    If your wireless network IS WORKING then try typing "dig @8.8.8.8 www.apple.com" and hit return

     

    If you see the following, give or take a few differences, then your DNS is definitately not working and you need to tell you ISP that you need them to fix it.

     

    ; <<>> DiG 9.8.1-P1 <<>> @8.8.8.8 www.apple.com

    ; (1 server found)

    ;; global options: +cmd

    ;; Got answer:

    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15117

    ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

     

     

    ;; QUESTION SECTION:

    ;www.apple.com.                              IN          A

     

     

    ;; ANSWER SECTION:

    www.apple.com.                    1781          IN          CNAME          www.isg-apple.com.akadns.net.

    www.isg-apple.com.akadns.net. 42 IN          CNAME          www.apple.com.edgekey.net.

    www.apple.com.edgekey.net. 21582 IN          CNAME          e3191.c.akamaiedge.net.

    e3191.c.akamaiedge.net.          2          IN          A          23.1.77.15

     

     

    ;; Query time: 71 msec

    ;; SERVER: 8.8.8.8#53(8.8.8.8)

    ;; WHEN: Sat Aug 25 17:51:37 2012

    ;; MSG SIZE  rcvd: 158

     

    If you will report back here what you find from these steps, that will help us help you, and perhaps help others.

  • AhaAby Level 1 Level 1 (0 points)

    48 hours after getting new ISP:  no disconnection yet !

  • georgefromcoffeyville Level 1 Level 1 (0 points)

    Earlier this year, someone in this forum recommended going to the System preference and then to "Energy Saver", click on the Computer Sleep, and changing the "computer sleep" to NEVER.

    Which I did.

    Since that time, I have never had a drop from my WiFi.

    Last week I thought I would see if anything had changed, so I changed everything back to original. Again I had immediately Wifi disconnect.

    Changed everything back, now NO disconnects!

  • gsspike Level 1 Level 1 (0 points)

      Well for me and the Apple engineers I worked with found it is confind to my mac's wifi signal   When it drops wifi I can't see any networks two different ISP's and 3 different routers.   None of them see me.  Also confirmed by Apple It can drop wifi while working on line.  Wifi indicator can stay All black, light gray, dark gray or clear.  Apple called me to use my computer to try fixes posted here and all kinds of test that Apple would send me to run, log and send back to them.  They didn't leave out to many suggestions posted on these boards in different threads and some test they came up with..  What helps is I am a Master Diagnostician in another field who also had to keep our PC's and network up and running including 2 private satellite feeds.  I'm not one of the Unknowing people out there.   Anything I have tried without Apple I send my results back to Apple

    I still agree with Apple it is one problem affecting some computers and different programs on those machine.  My wife's identical macbook never had the problem in Lion and ML.  But I also run different programs than she does. Programs affected by this issue on mine are mail, G Chrome, Safari, Preview and Iphoto. Those seem to be the worst on mine.  Since 10.8.1 I can't even bring up cmd- option-esc so I'm forced to do a hard restart.  I've also gone back to dropping every 4 to 6 hours.  I had gotten it down to once every couple of days even a few times it lasted 4 days. 

    I agree that Different computers, programs, routers and ISP's fix it for some and not for others.  Maybe I agree with Apple because I've run into this kind of issue before.

  • gphonei Level 1 Level 1 (0 points)

    gsspike wrote:

     

      Well for me and the Apple engineers I worked with found it is confind to my mac's wifi signal   When it drops wifi I can't see any networks two different ISP's and 3 different routers.   None of them see me.  Also confirmed by Apple It can drop wifi while working on line.  Wifi indicator can stay All black, light gray, dark gray or clear.  Apple called me to use my computer to try fixes posted here and all kinds of test that Apple would send me to run, log and send back to them.  They didn't leave out to many suggestions posted on these boards in different threads and some test they came up with..  What helps is I am a Master Diagnostician in another field who also had to keep our PC's and network up and running including 2 private satellite feeds.  I'm not one of the Unknowing people out there.   Anything I have tried without Apple I send my results back to Apple

     

    I still agree with Apple it is one problem affecting some computers and different programs on those machine.  My wife's identical macbook never had the problem in Lion and ML.  But I also run different programs than she does. Programs affected by this issue on mine are mail, G Chrome, Safari, Preview and Iphoto. Those seem to be the worst on mine.  Since 10.8.1 I can't even bring up cmd- option-esc so I'm forced to do a hard restart.  I've also gone back to dropping every 4 to 6 hours.  I had gotten it down to once every couple of days even a few times it lasted 4 days.

     

    I agree that Different computers, programs, routers and ISP's fix it for some and not for others.  Maybe I agree with Apple because I've run into this kind of issue before.

    What I don't know, is what all these people are experiencing which causes them to have a "WiFi Constantly Dropping in Lion" moment.  I am a computer scientist who's Masters degree and thesis was based on networking and operating system implementations thereof.  So, I have a detailed view of what can happen, and I have a microscopic analysis mode when dealing with these kinds of issues.  Those who are not network experts will really have no idea how to walk through this and find the root cause.

     

    It's networking! It's not "an application".  Something in the network stack of software is being impacted by how it interacts with the world for the case of "The Apple WiFi problem".  Everyone else having a problem may be "confused" by the posts here and by their ignorance on the subject, and be lured into hunting and picking at the details of the posts here, trying to find an answer.

     

    There are so many different things that can make WiFi not work well.  But, there are so many more that can just make "networking" not function.

     

    Witness the broad number of "solutions" people have "found" for their problems.

  • pookyba Level 1 Level 1 (0 points)

    Why change the ISP, router, or anything else on the network if it has so far worked before the update on ML 10.8 ??? Apple apparently has not tested the new WIFI driver before he released the final version ML 10.8! On my network I have many iDevices also another Macbook with 10.7.4 version and all work perfect !

     

    A few hours ago I downgrade WIFI driver (IO80211Family.kext) to SL 10.6.3 and WIFI seems to working normally now. 10.6.3 does not support AirDrop but until Apple fix bug I can live without him 

  • Augend Level 1 Level 1 (5 points)

    IMPORTANT: This piece of information will not lead to any direct solution. This is written for experts to illustrate something happened which may possibly lead to finding the main source of the problem. PLEASE don’t enter any political or out of subject discussions.

    I was hesitating to say this story here as I know if this subject results in off-subject discussions this will be against “Terms and Policies” of this community. So again, I ask anyone to just focus on the scientific subjects and nothing else.

     

    Around 2 months ago I had a trip to one of those countries with supervised internet ( I mean many websites including Facebook, are filtered there but other websites as Google or non-political websites are not filtered).

    In that country ( I don’t say its name as I don’t want to imply any political issues) if you enter www.facebook.com in your address bar you will be redirected to a page with this message: “ Access Denied”.

     

    During my stay there, I could not connect to any website, or my connection dropped periodically, but something very very strange happened: During the disconnection periods if I wanted to go to Facebook, safari successfully redirected to that “Access Denied webpage” ! I mean I couldn’t connect to any webpage ( including Google or non-political pages which were not filtered ) other than that “Access Denied “ webpage ! But this wasn’t the only strange thing happened. Astonishingly I could connect reliably to any website via VPN without any disconnection.

     

    I have no idea about that but I think if an expert can find the fact behind this story, may find the main solution or fix for the problem. For example there may be an issue in proxies or perhaps hidden proxies of MBP or ISP or some incompatibility in TCP/UDP applied there or incompatibility in proxy settings or something else ( I don’t want to imply anything, these are only some guesses ).

    Any ideas ?

  • gphonei Level 1 Level 1 (0 points)

    pookyba wrote:

     

    Why change the ISP, router, or anything else on the network if it has so far worked before the update on ML 10.8 ??? Apple apparently has not tested the new WIFI driver before he released the final version ML 10.8! On my network I have many iDevices also another Macbook with 10.7.4 version and all work perfect !

     

    A few hours ago I downgrade WIFI driver (IO80211Family.kext) to SL 10.6.3 and WIFI seems to working normally now. 10.6.3 does not support AirDrop but until Apple fix bug I can live without him 

    Something that you have to understand, is that all the time that your systems have been setting there working with the technology you have, standards have evolved, bugs in systems have been fixed, new bugs have been recognized, and there are all kinds of work arounds in consumer wifi technologies because the "manufactures", can't fix their hardware.

     

    What you are thinking, is a square peg in a round hole problem exists.  The reality is that there are many more problems which could be more like the diameter of the whole might allow certain square pegs to fit.  Sometimes the peg is too long or too short.

     

    Sure, many people find that changing to the old driver works.  That implies nothing about where the problem actually is, only that a compatible environment exists in that configuration.  Just because you change one things doesn't mean that it signifies that the other parts are not at fault.

  • gsspike Level 1 Level 1 (0 points)

              "What you are thinking, is a square peg in a round hole problem exists."


       So before I continue are you agreeing or disagreeing with me?  Because that is pretty close to what I'm saying I'm saying.

  • gphonei Level 1 Level 1 (0 points)

    gsspike wrote:

     

              "What you are thinking, is a square peg in a round hole problem exists."


       So before I continue are you agreeing or disagreeing with me?  Because that is pretty close to what I'm saying I'm saying.

    What I'm saying is that based on what little information we actually have about "THE CAUSE", for me, the picture is not clear.  There is nothing that shows that Apple has a round hole of a WiFi driver, and the square peg of the standard is not fitting within it's implementation.

     

    Instead, many people have all kinds of problems which are just "normal networking" issues that need to be worked though to find the root cause, and then apply the appropriate fix (whether that's a new router, new ISP, better ISP or whatever).

     

    There maybe a wider set of circumstances that are caused by the "real problem", then what is recognizable by the reports here.  In the end, we will likely never have "THE REPORT" on what problem(s) is/are found.

     

    Given the reports here, I'm still on the side of "THERE IS NO REAL PROBLEM", but rather there are "circumstances" which create interworking issues.  It sure seems like there is likely several vendors routers that just have real problems using the full set of features that 802.11n MIMO allows.  There is the "frequency" part of 802.11 on 2.4ghz or 5ghz, then there is the security part with WPA2 and finally there is MiMO where the RF characteristics of the radio systems are much more technically challenging.

     

    As a Mac user, who has 4 different Macs, none of which have "THE PROBLEM", I am at a loss for a chance to work on finding out what's really happening.

  • pookyba Level 1 Level 1 (0 points)

    gphonei wrote:

     

    pookyba wrote:

     

    Why change the ISP, router, or anything else on the network if it has so far worked before the update on ML 10.8 ??? Apple apparently has not tested the new WIFI driver before he released the final version ML 10.8! On my network I have many iDevices also another Macbook with 10.7.4 version and all work perfect !

     

    A few hours ago I downgrade WIFI driver (IO80211Family.kext) to SL 10.6.3 and WIFI seems to working normally now. 10.6.3 does not support AirDrop but until Apple fix bug I can live without him 

    Something that you have to understand, is that all the time that your systems have been setting there working with the technology you have, standards have evolved, bugs in systems have been fixed, new bugs have been recognized, and there are all kinds of work arounds in consumer wifi technologies because the "manufactures", can't fix their hardware.

     

    What you are thinking, is a square peg in a round hole problem exists.  The reality is that there are many more problems which could be more like the diameter of the whole might allow certain square pegs to fit.  Sometimes the peg is too long or too short.

     

    Sure, many people find that changing to the old driver works.  That implies nothing about where the problem actually is, only that a compatible environment exists in that configuration.  Just because you change one things doesn't mean that it signifies that the other parts are not at fault.

     

     

    This is the first time I have been disappointed by Apple. I think everyone is looking for a solution to fix their WIFI to work normally until Apple fix bug? Also this is not the first time that Apple has made ​​a mistake with WiFi, this is also happened in 10.6, 10.7 and now again in 10.8 version. I am not paid to help Apple find there bugs and I just share my solution to temp. fix this problem. Also I'm really sorry that apple footsteps of Microsoft

     

    I can confirm that kext from SE 10.6.3 work perfect ! I use it about 6h without single drops