After upgrading the mint 18 kernel to 4.4.0-87-generic I no longer have wireless. My wired device still works, but my wireless nic has disappeared from ifconfig -a.

It does show up for lspci:

02:00.0 Network controller: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter (rev 03)

iwlist scan; lshw -c net

*-network UNCLAIMED
       description: Network controller
       product: BCM4352 802.11ac Wireless Network Adapter
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 03
       width: 64 bits
       clock: 33MHz
       capabilities: cap_list
       configuration: latency=0
       resources: memory:f7200000-f7207fff memory:f7000000-f71fffff

It also shows up in "Driver Manager", so I chose the following:

Broadcom Corporation: BCM4352 802.11ac Wireless network Adapater:
bcmwl-kernel-source (recommended)
Version +bdcom-Oubuntu1~1.1
Broadcom 201.11 Linux STA wireless driver source

I tried rebooting and even booting into an earlier kernel, but still my wireless device is "unclaimed" and does not show up for ipconfig.


this might be useful, basically...

sudo apt-get install firmware-b43-installer

and if something like "An unsupported BCM4312 Low-Power (LP-PHY) device was found." comes out, then:

sudo apt-get install firmware-b43-lpphy-installer

  • Awesome, it no longer shows as "unclaimed." Do I need to restart? it still does not show up under ifconfig -a. – flyingcars34 Aug 16 '17 at 14:52
  • yes, please, you need to load your kernel with the new drivers – Christopher Díaz Riveros Aug 16 '17 at 15:16
  • Ok, I rebooted, the device is no longer "unclaimed" but still does not show up for ifconfig. Is there something i'm missing? – flyingcars34 Aug 16 '17 at 22:21
  • I had some troubles with a broadcom wifi some time ago, check rfkill list sometimes the card is hard blocked, if you don't have rfkill, install it with sudo apt-get install rfkill try this link too – Christopher Díaz Riveros Aug 17 '17 at 0:06
  • Hmm, yeah I did check rfkill, it was originally soft-killed but I fixed that, I'll take a look at that link. Anything else you can think of? – flyingcars34 Aug 21 '17 at 12:12

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