Broadcom Corporation BCM4312 802.11b/g with Karmic

Some time ago I got a new Acer Aspire One that is shipped with the mo WLAN!

The log said:

[ 25.315594] wl: module license 'MIXED/Proprietary' taints kernel.
[ 25.322704] Disabling lock debugging due to kernel taint
[ 25.337362] wl: Unknown symbol lib80211_get_crypto_ops

The problem seemed the wl.ko which also could not be loaded manually ending up with the same error:

Unknown symbol lib80211_get_crypto_op

Some systems handle this problem with the linux-backports-modules-2.6.31-14-generic, but this did not work for me. But the bugreport helped actually a lot:

bash:~$ sudo apt-get install --reinstall bcmwl-kernel-source

seals the deal. Done and online again...

Author: Frederic Siepmann, published: 2010-01-02 17:45:34