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  • 2,550. Re: Lion WiFi Connection Problem
    clivefromess Level 1 Level 1 (0 points)

    Since this thread started I have fully checked out the router and all is fine with that piece of equipment, in fact it does not drop on my touch,phone, iPad or two Mac laptops, it has a good strong signal.   The Caffeine app has held the iMac to wifi without a problem, it seems to be associated with the iMac dozing off and losing it's grip on the router.   When I had the get it to lock again via Network, it was OK on the first two greens on the left side of the dialogue box and started to show failed on the Network position and the following ones for ISP etc.  A quick click on continue and the iMac regained it's wifi lock, until a pause in work happened for a few minutes.

  • 2,551. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    clivefromess wrote:

     

    Since this thread started I have fully checked out the router and all is fine with that piece of equipment, in fact it does not drop on my touch,phone, iPad or two Mac laptops, it has a good strong signal.   The Caffeine app has held the iMac to wifi without a problem, it seems to be associated with the iMac dozing off and losing it's grip on the router.   When I had the get it to lock again via Network, it was OK on the first two greens on the left side of the dialogue box and started to show failed on the Network position and the following ones for ISP etc.  A quick click on continue and the iMac regained it's wifi lock, until a pause in work happened for a few minutes.

    What model, year etc. are all these devices?  What version of the OS is on each?  That might help others understand if they've got the same problem you have.

  • 2,552. Re: Lion WiFi Connection Problem
    clivefromess Level 1 Level 1 (0 points)

    iMAC: 21.5" mid 2011, OSX10.8.2

    Laptops: 4.1,  OSX 10.6.8

    Phone HTC Android

     

    I note that the click to lock is always open after a loss of wifi connection despite being password protected.   Again there is another forum running this misbehaviour.

    So we have since the update:

    Loss of wifi connection - Caffeine holds the connection by not letting the computer sleep.

    Network Diagnostics click to lock misfunctioning although password protected.

    Face Time throwing up error messages. Can get round.

  • 2,553. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    clivefromess wrote:

     

    iMAC: 21.5" mid 2011, OSX10.8.2

    Laptops: 4.1,  OSX 10.6.8

    Phone HTC Android

     

    I note that the click to lock is always open after a loss of wifi connection despite being password protected.   Again there is another forum running this misbehaviour.

    So we have since the update:

    Loss of wifi connection - Caffeine holds the connection by not letting the computer sleep.

    Network Diagnostics click to lock misfunctioning although password protected.

    Face Time throwing up error messages. Can get round.

    In Preferences->Energy Saver, I have "Computer sleep:" set to the far right, or Never.  I have "Put hard disks to sleep" selected and "Wake for network access" selected for "Power Adapter" settings.

     

    I wonder what the "DHCP Lease" time is set to on your WiFi router.  Does changing that time to a day or longer change what you experience with caffine not running?

  • 2,554. Re: Lion WiFi Connection Problem
    clivefromess Level 1 Level 1 (0 points)

    Had a look at the Apple Support on MACs losing wifi and noted that my config IPv6 was on manual.   Changed it to automatic.   Looked at the DHCP Lease and clicked but asked for ID which I am unsure about so left alone.  Returned to front page of network diagnostics and clicked apply and locked settings.

    From your note I have done as you suggested and will see if the MAC stays on and the wifi locked in without Caffeine selected.

    Thank you for your help will see how it goes.

  • 2,555. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    clivefromess wrote:

     

    Had a look at the Apple Support on MACs losing wifi and noted that my config IPv6 was on manual.   Changed it to automatic.   Looked at the DHCP Lease and clicked but asked for ID which I am unsure about so left alone.

    If you look in your manual, or online at the web site for your routers manufacturer, you probably can find information on what the default username and password are for the router.  If you've never set it, chances are, the defaults are still set.  That would let you in to make the change in the lease time.

     

    I'm just guessing at what might be happening.  I wonder if there are any other routers with the same SSID somewhere?  That can cause a lot of confusion if the signals have similar power levels and cause your computer to keep switching or trying to switch between them.

     

    Does your router have 2.4ghz and 5ghz?  Does it have a "guest network" that you've enabled?  This could also cause your computer to keep switching around if it knows about other networks and more than one of them are accessible.  Apple's recomendation to remove all defined routers, and just add one router back is an attempt to remedy problems with mutiple routers being visible at once.

  • 2,556. Re: Lion WiFi Connection Problem
    clivefromess Level 1 Level 1 (0 points)

    Checked that there are no computers in the area with the same SSID, and we have a lot of people online around here.

    Signal from this router a ZyXEL AMG1202 - T10A is good and strong.

    Only has the 2.4Ghz.

    No guest network that I can see.

    I removed all unwanted routers and returned mine to the list only.

    Configured IPv^ to auto a per Apple

    Have set the time out on the energy saver to "never"

    Confirmed the MAC to wake up as you had suggested

    Switched off the Caffeine app

    At the moment it picked up wifi on switching on the iMac and so far is now running as expected.

    Hope these tweeks have fixed the problem, will wait and see.   Will be back if it is not the final solution.

    Many thanks for your help.

  • 2,557. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    clivefromess wrote:

     

    Checked that there are no computers in the area with the same SSID, and we have a lot of people online around here.

    Signal from this router a ZyXEL AMG1202 - T10A is good and strong.

    Only has the 2.4Ghz.

    No guest network that I can see.

    I found the manual for your router at ftp://ftp.zyxel.com/AMG1202-T10A/user_guide/AMG1202-T10A_.pdf.  If you have occasional drop outs, it may be do to interference if there are lots of devices/routers around you.  Look at section 8.2.5 of the manual on page 104, and try reducing the bandwidth to 20mhz if it is not already there.  It will reduce the speed of your wireless connections, but as long as you are not going between computers in your residence, you won't notice that because your DSL connection will be the slower part of the traffic flow.

  • 2,558. Re: Lion WiFi Connection Problem
    clivefromess Level 1 Level 1 (0 points)

    Yes the Manual is very comprehensive.   Have done as you suggested and also noted that the QofS facility was deactivated and on the trouble shooting pages they suggested as an advanced item to select that.   There is nothing that I can see that it will do, but is all the right bits are activated  then maybe things will go properly.   The bandwidth has been reduced and my computer to computer work is minimal so should cause no problems.

    Now lets see how things perform.

    You really have been a big help.

  • 2,559. Re: Lion WiFi Connection Problem
    Calvinator Level 1 Level 1 (0 points)

    Java seems to be my problem also, I was attempting to install, uninstall, massage... Don't have a fix.

  • 2,560. Re: Lion WiFi Connection Problem
    Mary Beth Basil Level 1 Level 1 (0 points)

    Well my problem is solved.  I was  using a UBEE wireless modem/router combo provided by charter.  They assured me it was a very good router, came out and checked it twice.  I bought a new powerful router (Netgear R6200), had Charter install a free modem and haven't been dropped once in two weeks - it was every 15 minutes before.  As Charter was charging me 15.00 per month for their modem/router I should make up the cost in less than one year.   I found it hard to believe it was the wireless router because our other equipment worked fine, ipad, iphone, Dell, etc.  Just the Macbook Pro wireless didn't work right  after ML update.   Now it works just fine so I have to conclude that the router wasn't powerful enough after the upgrade.    I'm not a techie so I need  simple solutions, this one worked for me.

  • 2,561. Re: Lion WiFi Connection Problem
    renzofromroma Level 1 Level 1 (0 points)

    Hi, listen to this. During Christmas back in italy, my old MBP all of a sudden died. . Brought to apple store and they found it was the graphic card. They told me that apple was taking care of that particular case for machines up to four year old. Mine was 4 and six month (out of luck). Since I had to change the battery as well, I decided to spend some more money for a new MBP 13" (I thought that, maybe, I could solve my old wi-fi problem). ANd Since I became completely crazy, I got also the new iphone5 and an ipad mini. Back in Angola, all of them have the wi-fi slow-down and disconnection, more frequent then before. Someone can go back about one hundred pages on this thread to find my actual net config: one wi-max router connected via cable to an airport express which provide wi-fi at home (5GH). With the old machine I tried everything suggested on this thread but replacing the drive with the snow-leopard one. Now I'm refusing to do the same with brand new devices. Instead I decided to change the  my internet provider in order to try a different router. But something happened about 10 days ago. Normally I switch off the routers every night switching them on again when I get back home the next day. Well, 10 days ago the airport express got a wrong IP number, instead of the normal 192.168.1.2 it got 169.254.20.105. Since then everything is working perfectly no matter if I switch off the MBP and the other devices, or I keep them on only closing the lid, or living for a week-end and re-connecting immediately as soon as I enter home. Unbelivable. What can I say? Interference? I don't think so, hardware problem? not at all, connection protocols? mmm may be. For now my only answer, beside saying that apple is unable to handle this issue, is not switching off airport express forever. (I see a windows machine in my future getting closer and closer)

    Bye.

  • 2,562. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    renzofromroma wrote:

     

    Well, 10 days ago the airport express got a wrong IP number, instead of the normal 192.168.1.2 it got 169.254.20.105. Since then everything is working perfectly no matter if I switch off the MBP and the other devices, or I keep them on only closing the lid, or living for a week-end and re-connecting immediately as soon as I enter home. Unbelivable. What can I say? Interference? I don't think so, hardware problem? not at all, connection protocols? mmm may be. For now my only answer, beside saying that apple is unable to handle this issue, is not switching off airport express forever. (I see a windows machine in my future getting closer and closer)

    Bye.

    169.254.x.y addresses are reserved for use when DHCP fails.  That is, a device with an address in this "network", has failed to receive an address assignment via DHCP, and thus has assigned its own address.  It sounds to me like you are not connecting/using the network in the way that you think you are, and your network path is through some other device.  Is the airport express setup in "extend a network", "create a network", or in what way?

  • 2,563. Re: Lion WiFi Connection Problem
    renzofromroma Level 1 Level 1 (0 points)

    It is in "create a wireless network" and I have also my stereo speakers connected to the airport that work as well. Probably the wrong ip-assignment happened when I switched from 2.4 to 5 GHz and updated the airport express.

  • 2,564. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    renzofromroma wrote:

     

    It is in "create a wireless network" and I have also my stereo speakers connected to the airport that work as well. Probably the wrong ip-assignment happened when I switched from 2.4 to 5 GHz and updated the airport express.

    So the airport express is using it's ethernet/wan port to provide you a wireless network through the ISP provide wi-max router using a wired connection to that router?  It just seems impossible that the airport express could have failed to DHCP, and still provide a path to the ISP device.  It has to have a "default" route that is provided either manually, by you configuring it, or in the DHCP response from the Wi-Max router to your airport express over the "wire".   I'm trying to make sure I understand what is in place from a network topology perspective.  Are you sure there isn't another wireless network, with the same name and parameters as yours that you are connecting to by mistake?  If you open a terminal window on one of your Macs, and type "netstat -rn", what is the default route?

     

    Here's what I see on my current network.

     

    $ netstat -rn

    Routing tables

     

     

    Internet:

    Destination        Gateway            Flags        Refs      Use   Netif Expire

    default            192.168.1.1        UGSc            8        0     en1

    default            link#10            UCSI            0        0     en4

    127                127.0.0.1          UCS             0        0     lo0

    127.0.0.1          127.0.0.1          UH              5   341173     lo0

    169.254            link#6             UCS             0        0     en1

    169.254.88.106     127.0.0.1          UHS             1        0     lo0

    192.168.1          link#6             UCS             5        0     en1

    192.168.1.1        0:15:ff:29:77:49   UHLWIir        10      197     en1    742

    192.168.1.2        127.0.0.1          UHS             1        0     lo0

    192.168.1.3        e4:8b:7f:b2:8d:e1  UHLWIi          0      969     en1    769

    192.168.1.4        54:26:96:51:a:6e   UHLWIi          0      141     en1    881

    192.168.1.5        10:40:f3:cb:f:b8   UHLWIi          0      144     en1    881

    192.168.1.255      ff:ff:ff:ff:ff:ff  UHLWbI          0       28     en1

     

    Here, my router is 192.168.1.1.