Comment 54 for bug 1394368

For jack.chen and other Ubuntu 14.04 LTS / Mint 17 users with the default linux 3.13 kernel : The following should work :

Launch these commands in a terminal (enter your password and press enter when asked after the first sudo command, the password will not appear on the screen):

wget https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1462614/+attachment/4453553/+files/AthrBT_0x11020100.dfu
wget https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1462614/+attachment/4453554/+files/ramps_0x11020100_40.dfu
wget https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1394368/+attachment/4455590/+files/ar9462-dkms_1.0_all.deb
sudo mv AthrBT_0x11020100.dfu /lib/firmware/ar3k/
sudo mv ramps_0x11020100_40.dfu /lib/firmware/ar3k/
sudo dpkg -i ar9462-dkms_1.0_all.deb
sudo apt-get -f install
(if the last command suggests installing new packages, press 'y' and press enter.)

You might need to reboot.

The dpkg module is not compatible with later kernels.