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Thread: Wifi not working with Intel/PRO Wireless 3945ABG

  1. #1
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    Aug 2018
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    Wifi not working with Intel/PRO Wireless 3945ABG

    Hello everybody,
    I have installed Xubuntu 18.04.1 LTS on my HP Compaq 6710b, which has Intel/PRO Wireless 3945ABG, and it should work out of the box..but it doesn't. When I run lspci -nnk in terminal, among other things, I get this:
    Code:
    Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)
        Subsystem: Hewlett-Packard Company PRO/Wireless 3945ABG [Golan] Network Connection [103c:135c]
    18:00.0 Ethernet controller [0200]: Broadcom Limited NetLink BCM5787M Gigabit Ethernet PCI Express [14e4:1693] (rev 02)
        Subsystem: Hewlett-Packard Company 6710b [103c:30c0]
        Kernel driver in use: tg3
    I'd appreciate some help with this, thanks in advance.

  2. #2
    Join Date
    Aug 2005
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    South Carolina, USA
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    Ubuntu 20.04 Focal Fossa

    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    What is the result of:
    Code:
    rfkill list all
    sudo modprobe iwl3945
    Thanks.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
    Join Date
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    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    rfkill list all shows nothing, and after sudo modprobe iwl3945 I get this:
    Code:
    modprobe: ERROR: ../libkmod/libkmod.c:586 kmod_search_moddep() could not open moddep file '/lib/modules/4.15.0-30-generic/modules.dep.bin'
    modprobe: FATAL: Module iwl3945 not found in directory /lib/modules/4.15.0-30-generic

  4. #4
    Join Date
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    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Is the result the same if you do:
    Code:
    sudo depmod -a
    Reboot.
    Code:
    sudo modprobe iwl3945
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
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    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Yes, the result is the same. But when I type sudo depmod -a, I get this:
    Code:
    depmod: ERROR: could not open directory /lib/modules/4.15.0-30-generic: No such file or directory
    depmod: FATAL: could not search modules: No such file or directory
    EDIT: I should probably say that I've tried some things submitted in other similar threads, so it's possible that I've mixed something already. I'm completely new to Linux so I don't have the in-depth knowledge to know what I'm actually doing in terminal.
    Last edited by metalxer; August 13th, 2018 at 05:58 PM.

  6. #6
    Join Date
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    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Please try:
    Code:
    sudo apt install --reinstall linux-image-4.15.0-30-generic
    sudo update-initramfs -u -k all
    Reboot and try again:
    Code:
    sudo modprobe iwl3945
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  7. #7
    Join Date
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    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Okay, now I only get this after modprobe:
    Code:
    modprobe: FATAL: Module iwl3945 not found in directory /lib/modules/4.15.0-30-generic

  8. #8
    Join Date
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    Ubuntu 20.04 Focal Fossa

    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Let us see:
    Code:
    sudo depmod -a
    uname -r
    sudo updatedb
    locate iwl3945.ko
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  9. #9
    Join Date
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    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Now uname -r gives me this:
    4.15.0-30-generic

    And locate iwl 3945.ko gives me this.

    EDIT: I forgot to mention, after
    Code:
    sudo apt install --reinstall linux-image-4.15.0-30-generic
    sudo update-initramfs -u -k all
    display resolution has changed to 1024x768 and I can't set up the native resolution of the display (1280x800). I suppose this has something to do with Intel drivers?
    Last edited by metalxer; August 13th, 2018 at 08:26 PM.

  10. #10
    Join Date
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    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Wifi not working with Intel/PRO Wireless 3945ABG

    Interesting. The module exists in the -29 kernel version but not -30. Please run:
    Code:
    sudo apt install --reinstall linux-modules-4.15.0-30-generic
    sudo modprobe iwl3945
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

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