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I'm new with Linux. Here is my story: I have installed Ubuntu 14.10 today on my laptop Lenovo G510 with the BCM43142 wireless card... Everything works well except the wi-fi that i can't use. I have tried sudo apt-get bcmwl-kernel-source and it doesn't work. I have a wired connection in case that I need to download something to help me out resolving this issue. Help me please!

PS: Maybe it will help:

lspci -vvnn | grep -A 9 Network

08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Lenovo Device [17aa:0611]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 11
    Region 0: Memory at b9500000 (64-bit, non-prefetchable) [size=32K]
    Capabilities: <access denied>

09:00.0 Ethernet controller [0200]: Qualcomm Atheros QCA8172 Fast Ethernet [1969:10a0] (rev 10)
Xweque
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user3776900
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2 Answers2

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You apparently forgot 'install.' The command you want is:

sudo apt-get install bcmwl-kernel-source

Reboot and your wireless should be working.

chili555
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I'm using a Lenovo G510/I3 unit with Ubuntu 14.04.

I came across the same issue (wifi NOT working).And found the solution via an exhaustive search..

If you are interested in learning more about this issue - pls read through the below link (thanks to the community)

Installing Broadcom Wireless Drivers

Short answer:

1) First run below on the terminal

lspci -nn -d 14e4:

Which will most likely give you the below output :

02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

2) In that pls note the PCI.ID & the Rev number.

 [14e4:4365] (rev 01)

3) Run Update :

sudo apt-get update

4) Then install the firmware pakage.

sudo apt-get install bcmwl-kernel-source

5) Reboot the system

sudo reboot

After that your wireless will be working :-D

Good luck...

Ps - I believe your Bluetooth is also not working ? SO far trying to find a solution to that . DO let me know if you find a solution...

Community
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Lakshitha129X
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