BCM4313 on Lenovo g780 stopped working on update to 3.5.0-25-generic

[Derek]

BCM4313 on Lenovo g780 stopped working on update to 3.5.0-25-generic. falling back to 3.5.0-17-generic fixed

Ubuntu 12.10. Puzzled by lack of wifi, I hunted futiley for kill switches, tried installing a few broadcom packages out there (sta, b43 cutter), without success.

Booting the previous kernel, though, worked fine.

Checking lsmod, I see lib80211, lib80211_crypt, wl... These were not loaded in the more recent kernel.
Also, modprobe wl in most recent claimed it wasn't found.

[Derek (bugs-m8y)]

02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
 Subsystem: Broadcom Corporation Device 051b
 Flags: bus master, fast devsel, latency 0, IRQ 17
 Memory at e0400000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: wl
 Kernel modules: wl, bcma

[Alberto Milone (albertomilone)]

I bet the kernel headers for the new kernel are not installed.

Please try the following command:
sudo apt-get install linux-generic

then:
sudo dpkg-reconfigure bcmwl-kernel-source

and finally post the output of the following command:
dkms status

[Derek (bugs-m8y)]

That was it. Thanks!