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! Here's my question, short and sweet: My Dell mini 9 no longer detects my wifi card. No matter which of several gnu/linux distros I'm running, the card no longer ...
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  1. #1
    tfj
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    Linux no longer "sees" wifi card. Wifi Card suddenly disappears!


    !

    Here's my question, short and sweet:

    My Dell mini 9 no longer detects my wifi card. No matter which of several gnu/linux distros I'm running,
    the card no longer shows up with <lshw> or <lspci>. It's quite possible I have corrupted some necessary
    file somewhere. What do I do?

    When I search for info on 'wifi card undetected', I mostly get general wifi-setup discussions, which routinely
    tell you to first check if your card is detected, but rarely say what to do if the answer is "No". So I
    think my question has less to do with wifi, and is more a basic pci/hardware issue - "Why no card detection?"
    I am placing mucho maybe-relevant info here now, because I only have once-a-week internet access, and back-and-forth will be very slow. (I have removed info because the site erroneously claims I included photos/videos)


    ================================================== ================================================== ======================
    Here's various system info:
    ================================================== ================================================== ======================

    #### The kernel is usually 2.6.35-22-generic, or near-abouts. ####

    ------------------------------------------------------

    #### (lshw -C network)
    #### (lspci -vnn) # The card no longer shows up with either of these commands. ####

    ------------------------------------------------------

    #### (lspci): # card normally shows up at 03:hh.h ####

    0
    ------------------------------------------------------
    .

  2. #2
    Administrator jayd512's Avatar
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    Hello and Welcome!

    What exact distro are you running? Is your card detected if using a LiveCD?
    Please post the output of lspci -vnn in its entirety.
    Jay

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  3. #3
    Administrator MikeTbob's Avatar
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    It's possible that the card has transmitted it's last byte. How old is it?
    I do not respond to private messages asking for Linux help, Please keep it on the forums only.
    All new users please read this.** Forum FAQS. ** Adopt an unanswered post.

    I'd rather be lost at the lake than found at home.

  4. #4
    tfj
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    Please let me clarify my question - I'm not asking the common question, "My wifi interface is
    undetected, how do I setup my wifi?". I'm asking a more primitive, pre-wifi-setup, hardware question:
    "My machine no longer detects the pci-wifi-device; how do I fix it so the wifi card is recognized
    again?" Neither <lshw> nor <lspci> reports the card now, no matter which version of Linux I'm running.

    It's always possible the computer has blown a fuse or something, but because the wifi device
    'vanished' while I was struggling with the Linux/b43 wifi issues, it seems likely I corrupted some
    vital file, apparently one that persists between distros - the BIOS, maybe?
    -----------------------------------------------------------------------------------------------------
    Thanks for your replies ...

    Here's "lspci"
    #### (lspci): # card normally shows up at 03:hh.h ####

    00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03)
    00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
    00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
    00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
    00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
    00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
    00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
    00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
    02:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
    02:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller
    02:00.3 System peripheral: JMicron Technology Corp. MS Host Controller

    I've run several ubuntii, slitaz, wattOS, crunchbang, others, all loaded on the main flash drive with unetbootin. The main, installed distro is a slightly-corrupted Ubuntu 10.10.

    I'm not sure about running a "live cd"; so far I've been unable to get unetbootin-loaded OSes to boot completely from the thumb drive, only from the main flash drive. I don't know if the above OSes are running as live-cds or not.

    I originally used a B43 card, and have replaced it with an newish ath9 card - still no detection.

    I can run a ubuntu-rescue-mix that is loaded with diagnostic software, but I am ignorant about the topic of pci-devices going undetected.

    If you have a list of info you need, please make it as thorough as possible, as it may take up to two weeks for me to post the answer to questions.

  5. #5
    Administrator jayd512's Avatar
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    Driver installation will not affect hardware detection in different distros, nor will it affect BIOS.
    Even if wireless is disabled through a BIOS selection, the hardware itself will still show up in lspci.
    If your card is not detected from Ubuntu, Slitaz and all the others, it's most likely a hardware failure.

    If you truly suspect that your Ubuntu is corrupted in some way, download and burn a LiveCD. This could be Ubuntu, Mint, or even Partedmagic.
    From there, run lspci again. If your card goes undetected, it probably dead.
    Jay

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    New Member FAQ
    Registered Linux User #463940
    I do not respond to private messages asking for Linux help. Please keep it on the public boards.

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