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Hardware - Support => Network => Topic started by: ReH3565 on May 02, 2014, 07:36:18 PM

Title: connectivity problems
Post by: ReH3565 on May 02, 2014, 07:36:18 PM: I just downloaded linuxlite. I had no problem with internet connectivity using an ethernet cable but my wireless network wasn't recognized. I searched for additional drivers to get my Broadcom wireless activated, downloaded the driver, and now neither wireless nor wired internet will work. How have I messed up?
Title: Re: connectivity problems
Post by: Irishluck83 on May 02, 2014, 07:43:04 PM: If you just downloaded the driver you will have to reboot. Come back if it still not connecting.
Title: Re: connectivity problems
Post by: N4RPS on May 02, 2014, 09:44:01 PM: Hello!

Depending on the make, model, and age of your computer, there are several possible Broadcom drivers out there. Open a terminal window [CTRL-ALT-T] and enter the following command:

Code: [Select]
sudo lspci -nn -d 14e4:
Post the output here, and I'll tell you how to find the right driver. If you've installed the wrong one, you'll have to uninstall it to install the correct one, which I'll tell you how to do as soon as we determine which one you need.

Here's my output as an example:

rob@N4RPS-Mini210:~$ sudo lspci -nn -d 14e4:
02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

Older models use the b43 driver, and the REALLY ANCIENT ones use b43-legacy.

More info here: http://ubuntuforums.org/showthread.php?t=2214110

Hope to hear from you soon...

73 DE N4RPS
Rob
Title: Re: connectivity problems
Post by: ReH3565 on May 03, 2014, 11:29:59 AM: Hi,

Here is the output:

Ethernet controller: Broadcom BCM4401 - BO 100Base - TX
Network Controller: Broadcom BCM4311 802.11b/g WLAN

Thanks
Title: Re: connectivity problems
Post by: N4RPS on May 04, 2014, 12:14:22 AM: Hello!

NOW we're GETTING SOMEWHERE. You have a BCM4311. NOW try THIS: In a terminal window [CTRL-ALT-T], enter the following:

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sudo apt-get remove --purge bcmwl-kernel-source firmware-b43-installer firmware-b43legacy-installer sudo apt-get install linux-firmware-nonfree
You shouldn't have to, but if it doesn't fire up right away, reboot. If it's still broken after that, tell me the number XXXX in 14e4:XXXX...

73 DE N4RPS
Rob
Title: Re: connectivity problems
Post by: ReH3565 on May 04, 2014, 10:27:55 AM: Hi Rob,

It's still not working.

Here's the output:
Ethernet Controller [0200]: Broadcom Corporation BCM4401-BO 100Base-TX [14e4:170c] (rev 02)
Network Controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev01)

Thanks
Rick
Title: Re: connectivity problems
Post by: gold_finger on May 04, 2014, 02:13:21 PM: No idea if this helps you or not, but I have an older laptop with very similar Broadcom card.

Code: [Select]
03:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 02)
Only difference I see is that yours is "(rev 01)" and mine is "(rev 02)".

I used Synaptic Package Manager (Menu -> System -> Install/Remove Software) to install "bcmwl-kernel-source" package and that worked for me. Assuming you already purged everything using N4RPS's command -- open Synaptic, type "bcmwl" into the Quick Search bar, select the above package and install it. Reboot if it doesn't immediately work. (Don't think you need to get rid of the "linux-firmware-nonfree" that you installed; but if above doesn't work try uninstalling that too.)
Title: Re: connectivity problems
Post by: N4RPS on May 05, 2014, 03:18:15 AM: Hello!

It's either bcmwl or b43. Everything you want to know about Broadcom wireless cards, but were afraid to ask, can be found here:

https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#b43%20-%20Internet%20access (https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#b43%20-%20Internet%20access)

This link also tells you how to disable/blacklist conflicting drivers...

73 DE N4RPS
Rob