No wireless after upgrading kernel to 3.9.0

**sobinary** · June 28th, 2013

My wireless was working fine on kernel 3.8.0, but no longer works in 3.9.0. By that, I mean "Wifi" isn't even an option in the Network Settings.

I'm using Ubuntu 13.04 on a Sony Vaio Fit 14E. Here's my network adapter's info:

Code:

 lspci -vvnn | grep 14e4
07:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

And then

Code:

  *-network UNCLAIMED            description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:07:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:c0700000-c0707fff

I've tried installing different drivers for the 43142 with no success (maybe incorrectly?). Ethernet works perfectly.

Any help would be immensely appreciated because I need this computer for work. Thank you!

**chili555** · June 28th, 2013

I've tried installing different drivers for the 43142 with no success

Which, please? What may we have to remove before we proceed? How did you go about installing kernel version 3.9? May we have a link?

**chili555** · June 28th, 2013

Off for the evening, so I'll give the generic answer:

Code:

sudo apt-get install linux-headers-generic
sudo apt-get install bcmwl-kernel-source

Be sure you've installed linux-image-extra and if generic headers are not available, you can probably get away with linux-headers matching your 3.9 kernel version. I don't know if this is where you got 3.9, but notice here that linux-image, linux-image-extras and linux-headers are all needed.

http://kernel.ubuntu.com/~kernel-ppa...e/v3.9-raring/

**sobinary** · June 28th, 2013

Mainly

Code:

 sudo -i wireless-bcm43142-dkms_6.20.55.19-1_amd64.deb

and combinations of re-installing associated broadcom packages via Synaptics. I don't quite remember how I obtained 3.9. If there's a decent chance that re-installing the kernel will fix this, then I'm willing to do it.

**sobinary** · June 28th, 2013

The attached screenshots show what I have installed. For the extras you mention, I believe I have the 3.8 versions. Should that suffice, or is there a way to get the 3.9s (as they don't appear in Synaptics)? I'd be okay with going back to 3.8, but the speakers and mic don't work with that version

**chili555** · June 28th, 2013

That should probably work, actually. Let's see:

Code:

sudo modprobe wl
dmesg | grep wl
iwconfig

Thanks.

**sobinary** · June 28th, 2013

Ok,

Code:

sudo modprobe wl
libkmod: ERROR ../libkmod/libkmod-module.c:791 kmod_module_insert_module: could not find module by name='wl'ERROR: could not insert 'wl': Function not implemented
libkmod: ERROR ../libkmod/libkmod-module.c:925 command_do: Error running install command for wl
ERROR: could not insert 'wl': Operation not permitted

Code:

dmesg | grep wl

Code:

iwconfig
eth0      no wireless extensions.
lo        no wireless extensions.

Looks like this may be the problem?

**chili555** · June 28th, 2013

May I see:

Code:

ls /lib/modules/`uname -r`/updates/dkms/

Those tickmarks are on the left side of my US keyboard on the same key with ~. Also:

Code:

sudo dpkg -r  wireless-bcm43142-dkms
sudo apt-get install --reinstall bcmwl-kernel-source

One of these is going to hiccup and we'll get a clue as to what's wrong.

**sobinary** · June 28th, 2013

I've now lost connectivity on all kernels (due to the drivers tinkering). I just hard reset my machine, and will install 12.10 this time. If I get the same problem, then see you soon. Either way, thank you so much for your effort in helping me!