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I have BCM4313 802.11bgn wireless network adapter (rev 01), with is not recognized on Ubuntu 14.04. What to do?

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Did you check if there is a hard or soft block on your device? You can issue "rfkill list all" command to do so. – Prahlad Yeri Jul 2 '14 at 19:26 Follow the instructions and post again if they dont work – user299898 Jul 3 '14 at 15:57

This device uses the driver combination bcma and brcmsmac. It shouldn’t be necessary to install anything at all. Required firmware is installed by default in the package linux-firmware. In a few cases, it is necessary to blacklist b43 and ssb. Running the following commands would do this:

sudo -i
echo "blacklist b43" >> /etc/modprobe.d/blacklist.conf
echo "blacklist ssb" >> /etc/modprobe.d/blacklist.conf

This sorts the issue for me.

Source: Post by chili555 on Ubuntu forums

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