12 Replies Latest reply: Feb 28, 2008 1:47 AM by moritzf
Tan Kia Seng Level 1 Level 1 (0 points)
This an embarrassment for me, and Apple as well. I was using an old TP-Link (China brand) wireless router (no draft-G mode) before and initially I would have problems connecting to it, even with the correct WEP password; then even when I connect my MBP via ethernet to the router I can't connect to the internet. But when I boot into Windows via Bootcamp, I can connect fine on both Wifi and Ethernet. After several frustrating times using Network Diagnostics, the MBP connected to the Wifi and mostly run smooth from there. The strange thing is during these times when my MBP cannot connect to the Wifi, booting in Win XP would give me great internet access via both Wifi AND ethernet.

I attributed the above to some biased China product which is more inclined towards Windows systems, until a few days ago, when I decided to upgrade my Tp Link Wifi router to a Buffalo Air Station. The same problems (including ethernet connection) happened, and this time I have already updated the firmware for the Buffalo Wifi router. I couldn't even go to the set up page for the router (192.168.11.1).

Then I booted into WinXP and hey presto! Connection is perfect. I started Mozilla in winXP, went to the router setup and checked all the settings. No problems there.

I then shut down and restart into OS X, ran Network Diagnostics and this time I can get a connection.

I found that creating a new location (or deleting an old one and recreate one with the same name) helps. It also helps if you do not use the Internet Connect wizard; the wizard apparently, is not smart enough to detect which password encryption is used and neither does it allow you to choose the encryption type. I keyed in the right password several times but always get the message that the password is incorrect. Very frustrating.

If you do the set up manually, I find that you can choose the type of encryption (WEP 8, WEP 13, ASCII characters etc) and then key in your password. When this setup doesn't work, then run Network Diagnostics, sometimes it will correct things up. if it doesn't, then re-setup and run diagnostics again.

After reading other topics and posts on this connection issue, I am convinced it is a compatibility issue between router hardware (both old and new) and Apple's OS X.

It is shame because the MBP is so user friendly in other ways. I also find that when something goes wrong with a mac machine (which is seldom), it is difficult to troubleshoot because so much of the background computing work is "hidden" from the user.

MBP, Mac OS X (10.4.11), 1.83Ghz, 1GB RAM, 1st generation MBP
  • crsouser Level 1 Level 1 (0 points)
    I have the same problem.

    I have tried a couple different wireless routers (2 Netgear & 1 Belkin) and seem to not be able to shake the problem.

    I can navigate to the website on my non-wireless XP box no problem, my old (like 2001) Dell Notebook wirelessly with no problem, but my macbook pro on wireless can't bring up pages it had used not long before.. but others just load fine (I am talking about ones like ebay even, not just obscure ones). I haven't tried booting up Parallels yet to see if its only an issue or in OSX or the hardware.

    I have run every hardware and software update on my MBP and still have the random problem which is embarrassing and just frustrating as it wastes my time.

    I have seen lots of posts that say just hard code the DNS servers of your ISP in.. I shouldn't have to do that, and that doesn't work as I travel around town every day and encounter multiple network configurations and ISPs.

    There seems to be a lot of articles and posts on this issue that Google finds but I have yet to see a definitive solution from anyone (especially Apple).

    Christopher
  • Tan Kia Seng Level 1 Level 1 (0 points)
    I hardwired the DNS servers into the router too but the same problems still exists. By the way for some reason Macs work better if you input the DNS servers under Network Settings. If you don't do it, sometimes you can't get on the internet. Beats me why this is so. My colleague who uses an iBook faced this problem after a software update, so I think it is a OS X problem.

    By the way, to compound problems, I found out from my other colleagues that the Buffalo WHR G54S tends to lose its internet settings after powering off. They are using both Macs and Win XP machines. So now I either keep the Buffalo powered on 24/7 or switch back to my old TP-Link router.

    What a bummer.
  • Tan Kia Seng Level 1 Level 1 (0 points)
    I hardwired the DNS servers into the router too but the same problems still exists. By the way for some reason Macs work better if you input the DNS servers under Network Settings. If you don't do it, sometimes you can't get on the internet. Beats me why this is so. My colleague who uses an iBook faced this problem after a software update, so I think it is a OS X problem.

    By the way, to compound problems, I found out from my other colleagues that the Buffalo WHR G54S tends to lose its internet settings after powering off. They are using both Macs and Win XP machines. So now I either keep the Buffalo powered on 24/7 or switch back to my old TP-Link router.

    What a bummer.
  • Tan Kia Seng Level 1 Level 1 (0 points)
    I noticed something peculiar. After I set up the Buffalo wiresless router under WinXp (courtesy of Boot Camp on my MBP), I rebooted into OS X. I found out that while airport can connect to the wireless signal (protected by WEP 128 ASCII encryption), it somehow cannot get the right IP address of the router. It would show 192.168.1.1 instead of 192.168.11.1; the latter is what I would get under WinXP. Now all the WinXP machines in my office can get on the net except my OS X (my MBP can go online under WinXP, which is how I ca post this entry).

    Very perturbing. Something is seriously not right with 1) Airport 2) OS X or 3) Airport and OS X.

    Anyone knows how to sort this out? For the record I am using Buffalo Airstation WHR G54S.
  • crsouser Level 1 Level 1 (0 points)
    Ok.. found a reliable work around that has so far worked every singe time and proves it is an issue with OSX to me.

    Anytime you get the error of page not found and you don't get a DNS lookup page making suggestions.. perform the following.. in 10.5.x on up.

    10.5 +
    dscacheutil -flushcache
    10.4 -
    lookupd -flushcache

    Then simply hit reload in Safari or Mozilla and wallah.. your page now will load!

    Christopher
  • Tan Kia Seng Level 1 Level 1 (0 points)
    where do I type the command you suggested? I am not aware of any command line function in OS X like I do for Windows.
  • Bojanki Level 1 Level 1 (0 points)
    My Problem is similar.

    MBP Wireless works on Bootcamp WinXP and fails on OSX 10.5.1
    I tried all suggestions right from router reset but all are in wain.

    There are 2 more laptops WinXP that work fine at home.
    I am really clueless on what to do ?
  • Geoff Davies Level 1 Level 1 (0 points)
    I experience similar problems to this on my old Cisco Aironet. Works fine (and has done for years and years) with lots of Windows PCs but since getting my MacBook a few months ago it regularly won't join the network.

    A reliable workaround is as Tan Kia Seng suggests which is to create a dummy network entry, click Add, click apply and it joins the network. Next time it fails to connect I remove the dummy entry and it immediately connects. Been using this workaround for a few months now.

    I'm currently trying to get a 802.11G up and running and this works fine with Windows but the MacBook won't connect unless I turn WEP or WPA off on the AP.

    I've got a spare AirportExpress I'm going to try to see if that works.
  • DCODD Level 1 Level 1 (0 points)
    Hey All,

    I'm actually have the same exact problems. I am browsing the internet and life is good until it all of a sudden drops the connection. Now airport still insists that i am connected to my network but i cannot access anything demanding a network connection. A short fix for it is to turn the airport off and right back on and your connected. I know its not the router ecause this has happened to me at several diffrent locations. I have also erased and installed the operating system. My mac mini can sit right beside me and it connects fine but the mac book pro will still disconnect itself. I have called apple and thy explained that it is a new issue and "They are working on it." Don't know what to do but i do know if a new update to the mac book pro comes out in macworld, this ones going on ebay!
  • callmerai Level 1 Level 1 (0 points)
    i am new at this, & i'm sure this has been a topic many times. i just purchased my macbook pro in december 2007 & it is running on MAC OS X version 10.5.1 & we have a linksys WRT300v1, & i'll be online & the connection will just drop & the server can't find a connection. even when it has full bars, or if i even let my computer fall asleep. it requires me to fully restart my computer. i have contacted apple, and linksys numerous times & i have changed setting on both my mac & linksys. i have googled everything from wireless connection dropping to linksys compatibility i have been on many forums & still my mac continues to loose connection & require restart. i honestly don't know if it is my mac or the wireless connection but if we have friends over using our wireless i am the only one that loss connection, & they have a pc. it is getting annoying. i purchased my mac hoping i would have better results with my mac, but i have more problems with it then i do with hp. what can i do so that my wireless & mac work together & i don't keep dropping.

    please help!!
  • poopshipdestroyer Level 1 Level 1 (0 points)
    I've had a 2.0 ghz white macbook for a couple of months now and have had problems with it and my wireless router.

    I find that my wireless connection will sometimes connect and disconnect from my router (its almost as though the connection if flashing). I know that this is probably not a problem with my router because my laptop running XP experiences no problems with the wireless whenever this is happening with my macbook.

    Also, Whenever I close my laptop, or put it to sleep, upon awakening it does not want to reconnect to my router, but if I try other wireless routers in my neighborhood it will connect to them just fine. I usually have to restart my computer or my router.

    I used to have a powerbook, which never had problems with my router, and my laptop running xp doesn't exhibit problems, so I don't really think it is my router.

    If anyone knows of a good fix for this problem (especially the flashing connection to the router) that would be great
  • moritzf Level 1 Level 1 (0 points)
    For everyone with wireless connectivity problems (especially using 802.11n) in Tiger 10.4.11:

    After spending months trying solve all the wireless issues (repeated disconnecting etc.) I finally found a solution:

    Reinstall OS X, when installing, do not connect to your wireless network, connect to internet via ethernet cable and download and install the 10.4.11 combo update and airport update, then activate airport after restarting and all problems are gone.

    Although the reinstall is annoying its well worth it in the end since it solved all my problems!