Cant use Broadcom wifi on my LenovoG500 Laptop

bi flag
ejac@ejac-Lenovo-G500:~$ lshw -c network
*-network UNCLAIMED
       description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Inc. and subsidiaries
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list
       configuration: latency=0
       resources: memory:e0400000-e0407fff

ejac@ejac-Lenovo-G500:~$ lspci
02:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)
  • I've done an update & upgrade them following up this instructions: Installing Broadcom Wireless Drivers

  • I've purged the bcmwl-kernel-source

  • updated the pciids

  • installed the bcmwl-kernel-source

  • installed the linux-firmware

  • rebooted

  • update & upgrade again

yet I still don't have WIFI.

Additional logs as requested:

ejac@ejac-Lenovo-G500:~$ sudo modprobe wl && sudo dmesg | grep wl
modprobe: ERROR: could not insert 'wl': Key was rejected by service
ejac@ejac-Lenovo-G500:~$ rfkill list all
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
3: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
chili555 avatar
cn flag
Please edit your question to add the result of the terminal commands: `sudo modprobe wl && sudo dmesg | grep wl` and also: `rfkill list all` Welcome to Ask Ubuntu.
chili555 avatar
cn flag
Please temporarily turn off Secure Boot and try again. Possibly helpful:
bi flag

FIXED: As stated by chili555 disabling the secure boot from the BIOS fixed the problem. I have wifi now. I have no idea why secure boot would interfere with broadcom drivers but thank you chili555.

Pilot6 avatar
cn flag
Secure Boot doesn't led to load any 3rd party unsigned drivers.
I sit in a Tesla and translated this thread with Ai:


Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.