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roshan67
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Joined: 24 Jun 2021
Posts: 4

PostPosted: Sat Jul 10, 2021 12:55 pm    Post subject: Gentoo Broadcom WiFi Dongle Not Working Reply with quote

Hi, I have a wifi dongle by broadcom named BCM43236 or DNUB-AT. When using Pop_OS!, it works perfectly fine and the driver used by the dongle is called brcmfmac.

I have tried to install that driver in Gentoo kernel configuration but it is not working. When I type in the command ip link, it does not show the network by the dongle.

How can I go about it, btw I am a noobie
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alamahant
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Joined: 23 Mar 2019
Posts: 3872

PostPosted: Sat Jul 10, 2021 5:18 pm    Post subject: Reply with quote

Hi
it would be good if you had config like this in your kernel .config
Code:

CONFIG_NET_VENDOR_BROADCOM=y
CONFIG_BROADCOM_PHY=m
CONFIG_WLAN_VENDOR_BROADCOM=y

CONFIG_B43=m
CONFIG_B43_BCMA=y
CONFIG_B43_SSB=y
CONFIG_B43_BUSES_BCMA_AND_SSB=y
# CONFIG_B43_BUSES_BCMA is not set
# CONFIG_B43_BUSES_SSB is not set
CONFIG_B43_PCI_AUTOSELECT=y
CONFIG_B43_PCICORE_AUTOSELECT=y
CONFIG_B43_SDIO=y
CONFIG_B43_BCMA_PIO=y
CONFIG_B43_PIO=y
CONFIG_B43_PHY_G=y
CONFIG_B43_PHY_N=y
CONFIG_B43_PHY_LP=y
CONFIG_B43_PHY_HT=y
CONFIG_B43_LEDS=y
CONFIG_B43_HWRNG=y
# CONFIG_B43_DEBUG is not set
CONFIG_B43LEGACY=m
CONFIG_B43LEGACY_PCI_AUTOSELECT=y
CONFIG_B43LEGACY_PCICORE_AUTOSELECT=y
CONFIG_B43LEGACY_LEDS=y
CONFIG_B43LEGACY_HWRNG=y
CONFIG_B43LEGACY_DEBUG=y
CONFIG_B43LEGACY_DMA=y
CONFIG_B43LEGACY_PIO=y
CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
# CONFIG_B43LEGACY_DMA_MODE is not set
# CONFIG_B43LEGACY_PIO_MODE is not set
CONFIG_SSB_B43_PCI_BRIDGE=y


plus it is always good to have
Code:

linux-firmware

installed
plus
this
Code:

net-wireless/broadcom-sta

couldnt hurt
plus better you have the module configured as module (=m) rather than in-built (=y)
:)
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54028
Location: 56N 3W

PostPosted: Sat Jul 10, 2021 6:23 pm    Post subject: Reply with quote

alamahant,

Its none of those_B43.

Code:
  │ ┌───────────────────────────────────────────────────────────────────────────────────────┐ │ 
  │ │        --- Wireless LAN                                                               │ │ 
  │ │        [ ]   ADMtek devices                                                           │ │ 
  │ │        [ ]   Atheros/Qualcomm devices                                                 │ │ 
  │ │        [ ]   Atmel devices                                                            │ │ 
  │ │        [*]   Broadcom devices                                                         │ │ 
  │ │        < >     Broadcom 43xx wireless support (mac80211 stack) (NEW)                  │ │ 
  │ │        < >     Broadcom 43xx-legacy wireless support (mac80211 stack) (NEW)           │ │ 
  │ │        < >     Broadcom IEEE802.11n PCIe SoftMAC WLAN driver (NEW)                    │ │ 
  │ │        < >     Broadcom FullMAC WLAN driver (NEW)                                     │ │ 


Its Broadcom FullMAC WLAN driver (NEW) and it needs firmware, which is mostly in linux-firmware.
On non-EFI platforms it also needs a text file. that provides the data found in EFI firmware. I'm not sure if that's in linux-firmware or not.

As you say, make it a loadable module to avoid faffing with firmware built into the kernel.
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NeddySeagoon

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