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Laptop doesn't see my network but sees others

Discussion in 'Tomato Firmware' started by Nightowl4272, Jun 13, 2009.

  1. Nightowl4272

    Nightowl4272 Addicted to LI Member

    I hope this isn't too basic a question for these forums. All the other questions seem so hard-core.

    I have a Linksys WRT54GL running Tomato Ver 1.23

    I have 4 PCs connected with the Ethernet and 1 iPhone with wi-fi...no problems.

    My problem is one of the PCs is a laptop HP nx9420 running XP with an Intel(R) PRO/Wireless 3945ABG Network adapter and I cannot get it to connect to wi-fi. It's crazy...
    1. It sees my neighbor's network in the list of available networks but not mine less than 5 ft from it.
    2. My iPhone connects no prob to the wireless network all over the house.
    3. I use this laptop to connect to library and hotel wi-fi networks all the time with no problem.

    -SSID is broadcasting (my iPhone sees it)
    -Wireless Mode is "Access Point"
    - B/G Mode is set to Mixed even though both iPhone and laptop have G.
    -Wireless Client filter is Disabled
    -I even disabled all wireless security.
    -I do have an IP Address Range set and left one open for the laptop but since I can't even get a connection, I can't set up a static ip address with Tomato.
    -ipconfig /all shows "Media State...disconnected" on laptop.

    Oh another thing. I had another laptop in here that couldn't see the network either...exact same situation. ???

    I don't get it. I know it's something stupid that I'm overlooking. Can anyone point me in the right direction?
  2. FattysGoneWild

    FattysGoneWild LI Guru Member

    Did you try putting it in just G mode? Do you have the latest drivers?
  3. NeKdo

    NeKdo Guest

    Under Advanced / Wireless
    put Afterburner to Auto

    and/or all other adjustment you made here to default

    Check whether your hardware switch of HP lap is turned on for wifi.
    Router assigns IP via DHCP ?
    Check under Control panel / network connections/ intel wifi - > properties -> general tab -> tcp/ip -> whether => Obtain an "IP address"/"DNS server" is on "automaticaly"
  4. Toastman

    Toastman Super Moderator Staff Member Member

    Intel cards suffer problems with many wireless routers. Read through this thread for help.


    When all has been done, there are still the occasional cards that still have problems. Especially using Vista. If it's of any help to anyone, I haven't seen a problem with Windows 7 using Intel cards, so currently I'm changing people over to 7 to cure the remaining connect problems. Also, 3945ABG's don't seem to work on channels above 11.
  5. Nightowl4272

    Nightowl4272 Addicted to LI Member

    Thanks a million for the replies everybody. Well, I did as NeKdo suggested and restored Tomato to the default. My laptop immediately saw my wifi network! :biggrin: I then applied my security settings and restrictions one by one while keeping an eye on the laptop's connection. I'd swear Tomato is configured the same way it was earlier when I was having the problem but it's working fine now. So I have no idea what was wrong but thanks again for the replies...big time.

    Toastman -

    As a matter of fact, I'm dual booting to Win7 RC and XP on this very laptop but was having the problem on both OSs. Thanks for the heads up on the glitchy Intel adapters...I'll bear it in mind if any more problems pop up.

    Thanks again guys...
  6. Toastman

    Toastman Super Moderator Staff Member Member

    I wanted to add something which perhaps confirms this. One day an Intel user lost access, after being fine for months. After a lot of investigation, I saved a backup configuration on the main router (AP was not touched), erased NVRAM, then restored from the backup. The Intel card associated immediately. Restoring without erasing NVRAM doesn't help. I am now waiting for it to happen again, so that we can compare the NVRAM dumps to see if there may be a clue to why this happens.
  7. yoda

    yoda Addicted to LI Member

    What operating system are you using?
  8. philtrim

    philtrim Addicted to LI Member

    Perhaps as preventative maintenance...


    Maybe it would be a good idea, say once a month, to backup your config, then do a NVRAM erase....Just to clear out the cobwebs....so to speak.
    Not a bad idea. I guess it's a'kin to restarting a Windows box when things are amiss!

    Just my 2 pennies worth!

    I may try that myself to see if I gain any increase in performance!
  9. Toastman

    Toastman Super Moderator Staff Member Member

    A bit impractical with over 250 AP's and routers...:biggrin: Aso, there is little point in flushing out an NVRAM that is clean and functioning. Until the Intel clients lost access, the router was working perfectly.

    What I'm trying to find out, is if anything gets scrambled in NVRAM, and why it doesn't get cleared by a restore, unless NVRAM is first erased. This would seem to indicate that a restore does not overwrite everything in NVRAM. Can any developers confirm this? If that's so, then things get a bit clearer.
  10. guillaumy

    guillaumy LI Guru Member

    Possible NVRAM corruption? How mysterious!

    It's exactly this sort of niggling worry that causes me to set all APs to reboot regularly at some off-peak period (some daily, others weekly, or fortnightly). In WDS multi-AP setups I have set reboots to take place 1 minute apart.

    Of course, I'm not suggesting that this is indeed the cause of the troubles here. I've also not had the pleasure of administering 250 APs.

    Here's hoping that you'll get to the bottom of this mystery!​
  11. Toastman

    Toastman Super Moderator Staff Member Member

    Pleasure - not. Luckily the AP's rarely ever go wrong, it's usually the routers. Having now discovered the cure for this little mystery, I'm wondering how many other strange things that people report, that never get resolved, just MAY be due to the same thing. A controlled reboot unfortunately doesn't help this problem, whatever happened to NVRAM (if that is really what is happening) only gets cleared with an erase cycle.

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