@Lucas Pottersky (lucaspottersky),

>From what I can see the (re)installation of the new dkms module worked
fine (contrary to the initial bug report by @Maxime Haselbauer).

Can you open a terminal and run, as root:

# modprobe wl

Assuming that this fails (i.e. you still have no WLAN), check the last
few lines in the output of running "dmesg". This will show why the
module failed to load.

The wl module has a slight conflict with the compat-wireless package
(are you using it?). I have a broadcom BCM4314 WLAN chip *and* an
Atheros AR8161 Ethernet chip (Lenovo Ideapad N581). The former requires
the WL module while the latter requires the ALX module, which (as of
now) is part of the compat-wireless package. The compat-wireless package
includes a version of cfg80211 that is incompatible with the WL module.

I solved the conflict by manually fixing the module dependencies and
then running "depmod -a". Unfortunately I cannot explain (at least) now,
exactly what I did.

It would be nice if we had a self-contained bcmwl package with no
dependencies on anything (if at all possible), or at least a separate
package for the ALX module that wouldn't include the whole compat-
wireless mess.

According to
https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/923809/comments/27
there will be a separate ALX package, which sounds good to me.

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https://bugs.launchpad.net/bugs/1107653

Title:
  Major regression on Precise....(Fail to install and broke ALL the
  network)

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