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  • 930. Re: Lion WiFi Connection Problem
    lupunus Level 3 Level 3 (995 points)

    laechleviel wrote:

     

    It told my FritzBox to use the channel 13 only yesterday. Since then I didn`t have any wi-fi-connection problems.

    Well done Dr. Watson. Case closed.

     

    If there was no drop since yesterday, I guess it will stay stable now.

     

    The outcome tell us that probably it was in fact a interference causing your trouble.

     

    Would you be so kind and post the actual network info here? Just to have a proof.

    You will see the values by holding down option key (alt) while click on the Airport symbol.

    The interesting values are: PHY, RSSI, Tx-Rate and the MCS-Index.

     

     

    Cheers - Lupunus

  • 931. Re: Lion WiFi Connection Problem
    Spannerdarl Level 1 Level 1 (0 points)

    Please ignore my previous posts on what I thought were solutions.

     

    But relevant to laechieviel's post.

     

    I too had a cordless phone which had given no problems with SL. When I removed it, swapped it actually, my problems vanished.

     

    I conclude: SL is more robust in terms of wifi than is Lion and in my case it was a cordless phone which was causing the interference which tripped up the wifi connection.

  • 932. Re: Lion WiFi Connection Problem
    Fandabydozy Level 1 Level 1 (0 points)

    I have had constant problems with the wifi dropping on Lion, so moved back to my old energy hungry PowerLine adapters.

     

    Can someone let me know when Apple fix this.

     

    Thanks

  • 933. Re: Lion WiFi Connection Problem
    PJRives Level 1 Level 1 (85 points)

    It would be impossible for anyone to let you know when it is fixed because we would have to know without a doubt exactly why it isn't working for you to know that it has been fixed for your situation. And without being in your home with your equipment, no one can know that. We can guess, but we can't know.

     

    Which is the same situation Apple is in. There's a number of variables which result in some folks having issues. Not everyone but enough folks that are very vocal so it seems like a huge problem. And for that group, which could prove to be less than 1% of users, the reasons are never the same. Some it is a corrupt setting and just turning off wifi and back on is the trick. Some need a clean install. Some have older equipment that needs a firmware update from the 3rd party that built it. Some need to change settings due to a channel conflict. And so on.

     

    Yes it is annoying and frustrating and yes it would be nice if Apple could post some magic update that would make it all go away for everyone and never have it happen again. But that isn't realistic given that not all of the variables are under Apple's control (case in point, the guy whose cordless phone was causing interference)

  • 934. Re: Lion WiFi Connection Problem
    hazeem Level 1 Level 1 (0 points)

    in my case, the wifi connection improved when i connect the mini to a different router.

     

    previously, i connected a router issued by our telco company. they developed and produce the router and apparently, the router has only been rolled out into the market for a few months (zero issue when using a pc or other iDevices). with a cordless phone just next to the router and i used apple's wireless keyboard and magic mouse, interference to the wifi signal might be the cause of the problem. though i still used the wireless keyboard and magic mouse, i have relocate the cordless phone to a different and distant location from the router but connection still drops at the rate of 2-3 times every 5 minutes.

     

    then, i connect another router (with a signal booster connected to it) to the modem and used the router for my mini whilst other devices are still connected to the original router. and the result is no disconnection of wifi for almost three hours now. it is the most pleasant experience of surfing the web since i bought my mini. hope this continues.

     

    so, in my case, maybe it is the original router or maybe it was the signal interference from other devices that cause my wifi to drop. or maybe a signal booster attached to the other router helps curb the interference. i have the faintest idea as to how the connection is stable now. maybe i should try to do a troubleshoot one by one to see which one is the cause of the problem. when it comes to technical things about computer / network / wifi etc, i am lost! it must be one of those three.

  • 935. Re: Lion WiFi Connection Problem
    hazeem Level 1 Level 1 (0 points)

    btw, the following were the network info.

     

    PHY mode: 802.11n

    BSSID : f4:ec:38:cb:a9:44

    Channel : 9 (2.4GHz)

    Security : WPA2 Personal

    RSSI : between -47 to -50

    Transmit rate : 130

    MCS Index : 15

     

    hope this could helps

  • 936. Re: Lion WiFi Connection Problem
    lupunus Level 3 Level 3 (995 points)

    hazeem wrote:

     

    previously, i connected a router issued by our telco company.

    Brand an name, please?

     

    hazeem wrote:

    i connect another router (with a signal booster connected to it) ...

     

    ... it was the signal interference from other devices that cause my wifi to drop.

    The boosted signal overrides the interferencing signals.

     

    All your nighbour wireless networks on near channels will have the interference issue from now on and eventually on this a arms race will start.

     

    It is never a good idea to use boosters to solve a interference problem as in unlucky circumstances at the end you loose this war.

  • 937. Re: Lion WiFi Connection Problem
    hazeem Level 1 Level 1 (0 points)

    hi lupunus,

     

    not sure of the telco router brand. their staff was saying that it was their R&D team product. the router is only made available to those who subscribe to their broadband plan. it is not sold in any retail outlet for now.

     

    the alternative router is TPLink Model:TL-MR3420. Booster is also from TPLink Model TL ANT2408C.

     

    i need the original router to be connected for the internet tv subscribtion and i could find ways to get the internet tv through the TPLink router.

     

     

     

    how do i check if the other devices have any interference as i just dl some apps from the ipad and the lenovo pc and everything seems to be ok?

     

    alternatively, if i could try to disconnect the signal booster and used the TPLink normal antenna instead. would this affect the other devices? or is it just not good practice to have 2 routers at the same area and at the same time although we could only connect to one router per devices at any point of time, right?

     

    any advice? thanks.

  • 938. Re: Lion WiFi Connection Problem
    laechleviel Level 1 Level 1 (0 points)

    Just have a look at my last post:

     

    • as I said I told my FritzBox to use channel 13 only yesterday and didn`t have any wi-fi-connection-problems since then
    • this changed some minutes ago when I used the WLAN with my iPhone for the first time since switching to channel 13 > at once Airport reported that it lost the internet-connection > may this be caused by the router going to 802.11g for the iPhone? > if so switching to channel 13 is just another "dead solution"
    • 939. Re: Lion WiFi Connection Problem
      lupunus Level 3 Level 3 (995 points)

      laechleviel wrote:

       

      Just have a look at my last post:

       

      • this changed some minutes ago when I used the WLAN with my iPhone for the first time since switching to channel 13 > at once Airport reported that it lost the internet-connection > may this be caused by the router going to 802.11g for the iPhone? > if so switching to channel 13 is just another "dead solution"

        Sorry, did not see that post ...

         

        I dont think that the switch to 13 was a dead end road.

         

        The router run the "g" permanently parallel, even if no station is attached. You may see this if you take a look in the system profiler of your Mac.

         

        The Internet connection and your own network are two different things. The router/modem combination (in your case) acts as "bridge" between your network and the big network "out there" called Internet. Both are seperated by the FritzBox firewall/proxy combination althought the FritzBox proxy is not a real proxy. It's more like a cache, though.

         

        If Airport reports "connection lost" that will only tell you that the connection to your router is cut off.

         

        So, don't mix that up every time.

         

        Eventually a unlucky coincidence. Could you reproduce the effect when connecting the iPone?

         

        If yes, during the iPhones connection attempt something may occur in your network causing disasotiation of a station. In most times "bad packets" due to collisions or wrong (missing) answer packets.

         

        Eventually delete the former network settings from the iPhone and rejoin then the network again.

         

         

        Cheers - Lupunnus

      • 940. Re: Lion WiFi Connection Problem
        laechleviel Level 1 Level 1 (0 points)

        Sorry but my intellectual capabilites are enough to make a difference between the wi-fi-connection between my Mac and the router and the router`s connection to the internet... I just wrote about what Airport was telling me and this repeated several times. AND: The router`s connection to the internet was there when Airport reported a lost internet-connection as I could use the internet on my iPhone...

      • 941. Re: Lion WiFi Connection Problem
        laechleviel Level 1 Level 1 (0 points)

        Just as a consolidated summary of my personal experiences:

         

        My Setup:

        • iMac Mid 2010, 21.5-inch, Core i3 3,2 GHz
        • ISP: 1&1 (Germany)
        • Router: FritzBox 7270 (actual and same firmware as under Snow Leopard) / „guest-access“ and „energy-saving-function“ are deactivated (as they were under Snow Leopard)
        • Network: WPA+WPA2 / unique SSID / the only stations in my WLAN are my iMac and my iPhone (3GS) / there is a cordless-phone (Siemens Gigaset CX450 isdn) connected to the router / no active bluetooth-devices / 25 neighborhood-networks identified by Airport (the same 25 networks as under Snow Leopard)

        History / All the things I tried yet:

        • The connection-problems started when I updated to OS X Lion. Not immediately but after the Mac`s first reboot...
        • The following recommendations of Apple`s Support-Hotline did not help: delete all preference-files and reboot the Mac / reset the PRAM / reset the NVRAM
        • The following suggestions from this post did not help as well: delete the preferred network in the network-configuration and delete all the wi-fi-keychains in the Mac`s key-management > then configure it for a new / put wi-fi on the first place in the network-surroundings / deactivate „remember all the networks the computer was connected to“ / deactivate „give a hint on new networks“ /  the „ping-thing“ described in several replies makes things better but even then I still lost the connection several times... > anyway this can`t really be it in my opinion...
        • Then I went back to Snow Leopard for four days and did not have any problems at this time...
        • Then I did a clean installation of Lion from DVD > this worked for almost five weeks until the problems came back...
        • Then I figured out that there obviously is a problem about the BSSID (as described in quite some of the replies here) which most of you affected by the problem will see in the „kernel.log“...
        • Then I told my router to work via 802.11n+a (> 5 GHz) only > this works but is no solution for me as my iPhone could not use the WLAN any more...
        • Then I told my router to work via 802.11n+g only > this made things even worse...
        • Then I went back to 802.11n+b+g and told my router to use channel 13 only >  this worked for some hours but was NO durable solution as well...
        • Then I switched off my cordless phone and it`s base-station > this has worked for some hours now (which is no guarantee it`s going to last...) and is no acceptable solution because I can`t switch off the phone permanently and won`t buy a new one...

        Gonna put this all in another Bug-Report for Apple and really hope for an answer or a fix in 10.7.2...

         

        My view on it:

        • The problem results from a higher sensitivity of Lion on the influence of other wi-fi-networks or stations/devices in these networks...
        • My guess is that this has to do with Airdrop (as others guessed before in some replies here)...
        • @Lupulus: I`m not Dr. Watson for sure but just an experienced (20 years) Windows-User who switched to the Mac-World hoping there would be no need for massive trouble-shooting any more Anyway I really appreciate your help!!!
        • Of course there is other things in life and the world being much more important!!!
      • 942. Re: Lion WiFi Connection Problem
        laechleviel Level 1 Level 1 (0 points)

        Five minutes ago the connection went away again although my cordless phone and it`s base-station were switched off...

      • 943. Re: Lion WiFi Connection Problem
        lupunus Level 3 Level 3 (995 points)

        laechleviel wrote:

         

        there is a cordless-phone (Siemens Gigaset CX450 isdn) connected to the router

        Move the base of the Siemens as far away from the router as possible. It's a radio device and may cause interferences.

        Eventually "isolate" the radio beam of the base from the router.

         

        My router (Airport Extreme) is placed in a lower shelf of a standing desk and my two Siemens (One the same model as yours, one older A160) on top of the standing desk 'cause the main socket (ISDN/DSL) sits nearby at the wall. I had to shield the radio emission of the phone bases by placing them on a thin metal plate.

         

        laechleviel wrote:

         

        Then I did a clean installation of Lion from DVD > this worked for almost five weeks until the problems came back...

        Had this in another case too and thought firsthand, the problem will reappear cause the "wrong" SSID's / BSSID's come back to the "known networks" list.

        (This was the thing in my own case too until I deleted the sec-keys of this network from keychain.)

         

        laechleviel wrote:


        My view on it:

        • The problem results from a higher sensitivity of Lion on the influence of other wi-fi-networks or stations/devices in these networks...

        Could be. It matches to some other reports.

         

        laechleviel wrote:

         

        • @Lupulus: I`m not Dr. Watson for sure but just an experienced (20 years) Windows-User who switched to the Mac-World hoping there would be no need for massive trouble-shooting any more

        Exept the reason of a problem could be positively identified and a clear solution for that is known, all one can do is to go thru the differnet hints and look which of them makes the situation better.

        Also eventually a combination of steps leads towards a solution.

         

        The problem of performing these troubleshoots via a written conversation is often the lack of information and the misunderstanding that come up from the difference between thoughts and writing.

        Humans generally tend to the implication the receiver of their messages have the same knowledge, ideas and understanding about a situation as they have.

        Unfortunately, that's never true.

         

        The whole technic of wireless and networking is independent from any operating system for good reasons. And, as wireless networking is a very complicated mix of radio and networking protocols, we have to deal with troubleshoots regardless the use of either Windows, Linux or Apple. Also, OS X is not a wonder as it is a unixoid based system with all the pro's and con's of this concept.

         

        Thank you very much for your resumed report.

        It helps to sort out some observations and findings.

         

        live long and prosper - Lupunus

      • 944. Re: Lion WiFi Connection Problem
        lupunus Level 3 Level 3 (995 points)

        laechleviel wrote:

         

        Five minutes ago the connection went away again although my cordless phone and it`s base-station were switched off...

        Last idea I have on that ...

        Monitor the network with WireShark and compare the outcome with the router and kernel logs. This will identify a time correlating event in the network traffic at the moment the connection drop out.

        I place a bet that you will (hopefully) find a DUP ACK

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