I have installed Ubuntu 20.04, but the wifi interface is hard blocked.
I tried to install firmware-b43-installer and to insert the brcm80211 module manually but no luck.
Is there a known solution for this?
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
$ sudo lshw -C network
*-network DISABLED
description: Wireless interface
product: BCM4313 802.11bgn Wireless Network Adapter
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0b1
version: 01
serial: 70:f1:a1:ca:27:b5
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=brcmsmac driverversion=5.4.0-31-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:17 memory:f0300000-f0303fff
$ lspci -knn | grep Net -A3; rfkill list
04:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Dell Inspiron M5010 / XPS 8300 [1028:0010]
Kernel modules: bcma, wl
05:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8152 v1.1 Fast Ethernet [1969:2060] (rev c1)
