• Broadcom BCM432b won't scan


    Hey folks,

    I’m having an issue with a Broadcom wifi chip (surprise surprise) that I can’t find anything online about, and I’ve exhausted all the methods that the wiki recommended, so here I am.

    It’s a BCM432b wifi which is built into my 2009 unibody MacBook Pro. While the device is clearly visible to all programs, none of them are able to access it for scanning.

    This holds true with all programs tested, whether graphical or not. The Gnome menu shows the wifi device as enabled but the network list stays empty; wifi-menu says “Scanning for networks… failed.” iw prints nothing at all. It also behaves the same way on every driver that I’ve tested, including but not limited to: b43, b43legacy, Broadcom-wl, and broadcom-wl-dkms. It’s not rfkilled either. I’m running all the commands as root.

    But here’s the part that drives me crazy: on the latest Antergos Live CD, it works perfectly fine. I scan for, and connect to, networks without any problem. I can only assume there’s some recent package update that broke it. That’s why I included the live CD’s pacman -Q below. I’ve tried downgrading wpa-supplicant, and using the LTS kernel with Broadcom-wl-lts, but neither of those work. The driver on the cd was the latest one as well, so I’m not sure what else to try downgrading.

    Also, this may be totally expected, but I’m noting it just because I’m unsure: when I install Antergos as “core” (meaning no GUI at all) it can’t see wifi or Ethernet at all. Is that just a lack of automatic module loading, or is it a sign that something that comes with gnome is handling it and might be responsible? (I’m sure it’s the former.)

    Thanks so much!
    –Matt

    journalctl -xb: http://ix.io/i7F
    lsmod: http://ix.io/i7H
    ifconfig -a: http://ix.io/i6I
    pacman -Q: http://ix.io/i6t
    iw --debug wlan0 scan: http://ix.io/i88

    Antergos Live CD’s dmesg: http://ix.io/i6v
    Antergos live CD’s pacman -Q: http://ix.io/i6u

  • I essentially had the same problem with my XPS 13. The easy fix was to use a USB ethernet converter post install, and do a full system update. It found and installed the wifi drivers on it’s own, and all worked in the end.

  • An update!

    I just went through the process of installing Arch by hand, and set up Gnome and NetworkManager. The wifi works perfectly fine on Arch, which helps narrow things down because we know it’s a specific issue with the way Antegros configures things, combined with the recent packageset.

    Ruoh: I’m afraid I’m all up to date. Also, waiting for something to fix itself is a course of action but not a solution I’m afraid.

  • Hi,

    With Arch, in the end, which driver did you use?

    Also, this may be totally expected, but I’m noting it just because I’m >unsure: when I install Antergos as “core” (meaning no GUI at all) it >can’t see wifi or Ethernet at all. Is that just a lack of automatic module loading, or is it a sign that something that comes with gnome is handling it and might be responsible? (I’m sure it’s the former.)

    In base no network is setup, but you should see your device, as drivers are installed.

    Cheers!

wifi86 b432 broadcom14 broadcom-wl4 Posts 4Views 1535
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