No wifi option in ubuntu 20.04lts

Asked May 18 '20 at 09:51

Active May 18 '20 at 15:26

Viewed 4,050 times

In ubuntu 20.04lts it is showing me no wifi adapter found. I am new to linux and I don't know how to fix it so it would be very helpful if someone could provide me with step by step guide to enable wifi.Below is the terminal output:

lspci -knn | grep Net -A3; rfkill list
04:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0621]
    Kernel modules: wl
0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

edited May 18 '20 at 15:26

Pilot6

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asked May 18 '20 at 09:51

Vivek Falkar

What is the output of the commands lspci and lsusb? – McSuperbX1 May 18 '20 at 10:14
Please [edit] your question and add output of lspci -knn | grep Net -A3; rfkill list terminal command. – Pilot6 May 18 '20 at 10:57
1

Does this answer your question? Installing Broadcom Wireless Drivers – Pilot6 May 18 '20 at 15:25
The driver is installed. Disable Secure Boot in BIOS and it will work. – Pilot6 May 18 '20 at 15:26
i am new to linux so can you please tell me how to disable secure boot in BIOS? – Vivek Falkar May 18 '20 at 15:53
It is not related to linux. Enter your BIOS settings and disable Secure Boot there. – Pilot6 May 18 '20 at 16:04
2

thank you @Pilot6 my problem got solved after disabling secure boot in BIOS. – Vivek Falkar May 18 '20 at 17:16
@VivekFalkar Can you please provide the step how to disabling the secure boot in BIOS – demo Nov 30 '20 at 08:40

No wifi option in ubuntu 20.04lts

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