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I am completely new to lubuntu / ubuntu. I've installed "lubuntu 14.04.1 alternate" (CD version, as I could not get laptop to boot from usb) successfully on old Lenovo S10. It will network via ethernet cable, but does not find the wireless connection.

I've searched Ubuntu questions and found lots of people have the same issue with Broadcom wireless device.

have run the 

lspci -vvnn | grep -A 9

Network command and know that my 

chip ID is BCM4312 
PCI-ID is 14e4:4315 
kernel driver is wl

Beyond this I am stuck.

Have tried to make sense of the various fixes other people have suggested, but either it does not work or I do not understand how to do what they suggest.

How can I get the wireless running?

Sorry, I need simple instructions please.

jelliclecat
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1 Answers1

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Your wifi should be supported with the b43 module with the firmware, so

sudo apt-get purge bcmwl-kernel-source broadcom-sta-common broadcom-sta-dkms

sudo apt-get install firmware-b43-installer and reboot

Jeremy31
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  • Thanks for the advice, but it does not seem to have worked. – jelliclecat Mar 27 '15 at 13:08
  • I reinstalled lubuntu 14.04.1 (clean install), updated software when prompted, and also sudo apt-get update and sudo update-pciids. Then followed the advice of @Jeremy31 but still no Wi-Fi networks appear in the network manager, only wired connection via ethernet. – jelliclecat Mar 27 '15 at 13:16
  • As per advice from @Luis Alvarado in his response to question [http://askubuntu.com/questions/55868/how-to-install-broadcom-wireless-drivers], after installing the firmware-b43-installer you need to remove the b43 module, enable it again and even proceed to unblock with rfkill:

    sudo modprobe -r b43 sudo modprobe b43
    sudo rfkill unblock all but still it does not work.

     – jelliclecat Mar 27 '15 at 13:45
  • Is wl still the driver or is b43? – Jeremy31 Mar 27 '15 at 13:56
  • How do I find that out? – jelliclecat Mar 27 '15 at 14:13
  • lspci -nnk | grep -iA2 net should tell you about network drivers – Jeremy31 Mar 27 '15 at 16:49
  • BCM5906M fast ethernet PCI express 14e4:1713 (rev 02). Subsystem Lenovo ideapad S10e 17aa:3a23. kernel driver: tg3. – jelliclecat Mar 27 '15 at 18:08
  • Networkcontroller: BCM4312 802.11b/g LP-PHY 14e4:4315 (rev 01). subsystem: broadcom device 14e4:04b5. Kernel driver in use: b43-pci-bridge – jelliclecat Mar 27 '15 at 18:11
  • Strange, what kernel? uname -a as you might need sudo apt-get install firmware-b43-lpphy-installer or possibly download firmware-b43-lpphy-installer from an alternate source – Jeremy31 Mar 27 '15 at 22:08
  • Linux pc name 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:18 UTC 2015 i686 i686 i686 GNU/Linux – jelliclecat Mar 28 '15 at 21:09
  • Any error messages in dmesg | grep b43 – Jeremy31 Mar 28 '15 at 21:35
  • three lines come up: broadcom 4312 WLAN found (core revision 15) – jelliclecat Mar 28 '15 at 21:37
  • Found PHY: Analog 6, Type 5 (LP), Revision 1 – jelliclecat Mar 28 '15 at 21:38
  • Loading firmware version 666.2 (2011-02-23 01:15:07) – jelliclecat Mar 28 '15 at 21:38