Can't get wifi working in 14.04

[jollyjack]

It's not a show-stopper, as the laptop is LAN-connected, but I'd like to get it working. It used to work before I upgraded to 14.04

It's a Dell 1525, with a BCM4312 card (14e4:4315). There is no hardware switch for wifi - I used to toggle it on/off with alt-F2, but that's not having any effect. (I'm pretty certain the card works, as I tested it with W7, my dual boot.) Driver Manager says I'm using the Broadcom STA driver from bcmwl-kernel-source.

Any help will be very welcome.

Thanks

[kernelbasher]

http://wireless.kernel.org/en/users/Drivers/b43

Your device will work with either b43 or 'wl'. wl is the same as bcmwl-kernel-source

If you have installed bcmwl-kernel-source, it blacklists b43
Though b43 will not work unless you add the firmware.

Post the output of

[FONT=Ubuntu]lspci -nnk | grep -iA2 net[/FONT]

Might be worth installing rfkill and running

rfkill list

and report the result here

[jollyjack]

Hi, kernelbasher, thanks for the help

The first command gives me:

03:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c]
Kernel driver in use: wl
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
Subsystem: Dell Device [1028:0434]
Kernel driver in use: r8169

The second gives me:

0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: yes
Hard blocked: yes

Hmm. Lots of blocking.....

Cheers

[jollyjack]

Thanks, kernelbasher.

I think I've fixed it.

I guessed that the "soft" blocking was the problem, so I found a thread that told me about "blacklisting" and how to fix it in "blacklist.conf". Then, in case it was also needed, I ran "rfkill unblock all" (you can see I didn't really know what I was doing - a little knowledge.....).

Whatever, it's now working.

Cheers