04 on lenovo G500 the wifi seem off meaning regardless seem enable ..can't see any network as is off. I tried few network-manager restart but still nothing .Please can someone help ? Many thanks

Hi the output is:

02:00.0 network controller (0280):broadcom corporation BCM43142 80.11b/g/n (14:e4:4365) (Rev 1)
Subsystem : lenovo-g5 BCM43142 802.11/g/n (17aa:0611)
kernel driver in use : bcma-pci-bridge

patrizia@patrizia-Lenovo-G500:~$ lsmod | grep -e acpi

thinkpad_acpi          86016  0

nvram                  16384  1 thinkpad_acpi

snd                    81920  18 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_

video                  40960  3 i915,ideapad_laptop,thinkpad_acpi
  • try to reinstall with your lenovo connected to the internet with a cable, this way the installation may find a driver for you and download it
    – Greg
    Jul 17, 2016 at 20:29
  • Please edit your question and add output of lspci -knn | grep Net -A2 terminal command.
    – Pilot6
    Jul 17, 2016 at 20:47
  • We'd also love to see: lsmod | grep -e wmi -e acpi
    – chili555
    Jul 17, 2016 at 21:11

1 Answer 1


Connect your notebook to UTP network cable and try this:

Check "Additional drivers" and see if driver for broadcom corporation BCM43142 is there and install it - select Using Broadcom 802.11 Linux STA wireless driver source and press Apply Changes.

My screenshot of Aditional drivers

enter image description here

If there is no option in Additional drivers try to install it manually from terminal with following command

apt-get install bcmwl-kernel-source

My output is (using wl driver):

$ lspci -knn | grep Net -A2
07:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0611]
    Kernel driver in use: wl

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