I have a fresh install of 20.04 LTS on a DELL E6230 and the WiFi is failing. When I disconnect the wired connection, the WiFi does not show any networks to connect to. I have followed the instructions to install the firmware-b43-installer drivers from <here> and also tried the broadcom-sta-dkms/broadcom-sta-source from <here>. Both suggested 'fixes' have the same result, no WiFi icon and no networks displayed when searching. I can see the WiFi icon on the laptop chassis light up so I know the hardware switch is in the enabled position. I have also tried the command x from the terminal. I have toggled the hardware switch just to check that off the list. WiFi was working in Windows 10 before the Ubuntu install. Here is my network config:

sudo lshw -class network

  *-network                 

       description: Ethernet interface

       product: 82579LM Gigabit Network Connection (Lewisville)

       vendor: Intel Corporation

       physical id: 19

       bus info: pci@0000:00:19.0

       logical name: eno1

       version: 04

       serial: d4:be:d9:5e:d2:90

       size: 1Gbit/s

       capacity: 1Gbit/s

       width: 32 bits

       clock: 33MHz

       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.13-3 ip=192.168.10.55 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s

       resources: irq:33 memory:f7e00000-f7e1ffff memory:f7e39000-f7e39fff ioport:f080(size=32)

  *-network

       description: Wireless interface

       product: BCM43228 802.11a/b/g/n

       vendor: Broadcom Inc. and subsidiaries

       physical id: 0

       bus info: pci@0000:02:00.0

       logical name: wlp2s0

       version: 00

       serial: 08:3e:8e:4e:38:2a

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11

       resources: irq:17 memory:f7d00000-f7d03fff

--------------------------------------------------------

rfkill list all

1: hci0: Bluetooth

    Soft blocked: no

    Hard blocked: no

2: phy0: Wireless LAN

    Soft blocked: no

    Hard blocked: no

3: brcmwl-0: Wireless LAN

    Soft blocked: no

    Hard blocked: no

4: dell-wifi: Wireless LAN

    Soft blocked: no

    Hard blocked: no

5: dell-bluetooth: Bluetooth

    Soft blocked: no

    Hard blocked: no

What else can I try?

Additional data requested:

dmesg | grep wl

-------------------------------------------------------------

[    3.378526] b43 bcma0:1 wlp2s0b1: renamed from wlan0

[  140.948297] wlp2s0b1: authenticate with 2c:ba:ba:28:3c:be

[  141.041870] wlp2s0b1: send auth to 2c:ba:ba:28:3c:be (try 1/3)

[  141.044239] wlp2s0b1: authenticated

[  141.045545] wlp2s0b1: associate with 2c:ba:ba:28:3c:be (try 1/3)

[  141.048749] wlp2s0b1: RX AssocResp from 2c:ba:ba:28:3c:be (capab=0x1511 status=0 aid=4)

[  141.049022] wlp2s0b1: associated

[  141.063947] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by 2c:ba:ba:28:3c:be

[  141.089690] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0b1: link becomes ready

[  510.785746] wlp2s0b1: deauthenticating from 2c:ba:ba:28:3c:be by local choice (Reason: 3=DEAUTH_LEAVING)

[  518.107800] wlp2s0b1: authenticate with d4:ab:82:ae:a4:8e

[  518.210704] wlp2s0b1: send auth to d4:ab:82:ae:a4:8e (try 1/3)

[  518.213672] wlp2s0b1: authenticated

[  518.214412] wlp2s0b1: associate with d4:ab:82:ae:a4:8e (try 1/3)

[  518.229062] wlp2s0b1: RX AssocResp from d4:ab:82:ae:a4:8e (capab=0x1531 status=0 aid=2)

[  518.229343] wlp2s0b1: associated

[  518.247116] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by d4:ab:82:ae:a4:8e

[  518.265310] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0b1: link becomes ready

[  522.272491] wlp2s0b1: deauthenticated from d4:ab:82:ae:a4:8e (Reason: 2=PREV_AUTH_NOT_VALID)

[  522.649148] wlp2s0b1: authenticate with d4:ab:82:ae:a4:8f

[  522.848305] wlp2s0b1: send auth to d4:ab:82:ae:a4:8f (try 1/3)

[  523.051992] wlp2s0b1: send auth to d4:ab:82:ae:a4:8f (try 2/3)

[  523.255938] wlp2s0b1: send auth to d4:ab:82:ae:a4:8f (try 3/3)

[  523.256842] wlp2s0b1: authenticated

[  523.259884] wlp2s0b1: associate with d4:ab:82:ae:a4:8f (try 1/3)

[  523.262201] wlp2s0b1: RX AssocResp from d4:ab:82:ae:a4:8f (capab=0x1511 status=0 aid=2)

[  523.262475] wlp2s0b1: associated

[  523.312625] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by d4:ab:82:ae:a4:8f

[  571.154770] wlp2s0b1: deauthenticating from d4:ab:82:ae:a4:8f by local choice (Reason: 3=DEAUTH_LEAVING)

[  573.661353] wlp2s0b1: authenticate with 2c:ba:ba:28:3c:be

[  573.686946] wlp2s0b1: send auth to 2c:ba:ba:28:3c:be (try 1/3)

[  573.691671] wlp2s0b1: authenticated

[  573.694686] wlp2s0b1: associate with 2c:ba:ba:28:3c:be (try 1/3)

[  573.701997] wlp2s0b1: RX AssocResp from 2c:ba:ba:28:3c:be (capab=0x1511 status=0 aid=4)

[  573.702266] wlp2s0b1: associated

[  573.804321] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by 2c:ba:ba:28:3c:be

[  596.125334] wlp2s0b1: authenticate with 2c:ba:ba:28:35:d5

[  596.223697] wlp2s0b1: send auth to 2c:ba:ba:28:35:d5 (try 1/3)

[  596.235951] wlp2s0b1: authenticated

[  596.239478] wlp2s0b1: associate with 2c:ba:ba:28:35:d5 (try 1/3)

[  596.250993] wlp2s0b1: RX AssocResp from 2c:ba:ba:28:35:d5 (capab=0x1431 status=0 aid=6)

[  596.251257] wlp2s0b1: associated

[  597.305197] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by 2c:ba:ba:28:35:d5

[  619.161925] wlp2s0b1: deauthenticating from 2c:ba:ba:28:35:d5 by local choice (Reason: 3=DEAUTH_LEAVING)

[  621.598817] wlp2s0b1: authenticate with 2c:ba:ba:28:3c:be

[  621.759930] wlp2s0b1: send auth to 2c:ba:ba:28:3c:be (try 1/3)

[  621.763563] wlp2s0b1: authenticated

[  621.767699] wlp2s0b1: associate with 2c:ba:ba:28:3c:be (try 1/3)

[  621.772287] wlp2s0b1: RX AssocResp from 2c:ba:ba:28:3c:be (capab=0x1511 status=0 aid=4)

[  621.772581] wlp2s0b1: associated

[  621.829531] wlp2s0b1: Limiting TX power to 30 (30 - 0) dBm as advertised by 2c:ba:ba:28:3c:be

nmcli device wifi list

IN-USE  BSSID              SSID                        MODE   CHAN  RATE        SIGNAL >

        6C:F3:7F:73:65:C0  --                          Infra  1     130 Mbit/s  100    >

        6C:F3:7F:73:65:C1  MoE_Guest                   Infra  1     130 Mbit/s  100    >

        2C:BA:BA:28:36:1D  Menken                      Infra  5     270 Mbit/s  100    >

        6A:14:01:79:AD:89  DIRECT-89-HP M277 LaserJet  Infra  5     65 Mbit/s   100    >

        D4:AB:82:AE:A4:8E  menken-guest                Infra  6     130 Mbit/s  100    >

        D6:AB:82:AE:A4:8E  --                          Infra  6     130 Mbit/s  100    >

*       2C:BA:BA:28:3C:BE  Menken                      Infra  149   270 Mbit/s  100    >

        2C:BA:BA:28:35:D5  Menken                      Infra  5     270 Mbit/s  92     >

        2C:BA:BA:28:36:11  Menken                      Infra  5     270 Mbit/s  77     >

        78:D2:94:F0:C1:A1  IBEN-2.4                    Infra  11    195 Mbit/s  55     >

        2C:BA:BA:28:3C:76  Menken                      Infra  149   270 Mbit/s  54     >

        2C:BA:BA:28:3C:B2  Menken                      Infra  149   270 Mbit/s  34     >

        78:D2:94:F0:DA:19  IBEN-5                      Infra  153   405 Mbit/s  22     >

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