How do I get the Broadcom BCM4313 wireless working on an Asus 1015PX?

The BCM4313 broadcom wireless card is compatible with the open source brcm80211 driver directly included in the standard kernel or the proprietary broadcom-wl driver that can be installed from the Additional Drivers in Ubuntu. At any point of time, you should only have one of the drivers installed and trying to use it simultaneously will only result in the drivers conflicting each other.

It should be also noted that broadcom-wl has been causing more problems than resolving them and you should probably avoid them altogether if possible.

To answer your problem, I have used the steps provided in this forums thread. This method is more like a workaround for the problem rather than a permanent fix to the issue.

First of all, blacklist the wl, brcm80211 and b43 modules and all its dependencies.

gksudo gedit /etc/modprobe.d/blacklist.conf

After opening the file, add the following to it:

blacklist mac80211
blacklist brcm80211
blacklist cfg80211
blacklist wl
blacklist lib80211_crypt_tkip
blacklist lib80211
blacklist b43

And then, edit the rc.local file:

gksudo gedit /etc/rc.local

And add the following above exit 0:

modprobe brcm80211

This will ensure that the brcm80211 driver module is loaded at the end of the boot process. You might need to call update-initramfs -u to ensure that your changes will be effective after a reboot.

I should probably add the fact that I have BCM4313 wireless driver in my system and I have used these procedures to get it working properly.

References:

1. https://wiki.archlinux.org/index.php/Broadcom_wireless
2. http://linuxwireless.org/en/users/Drivers/b43
3. http://linuxwireless.org/en/users/Drivers/brcm80211
4. http://ubuntuforums.org/showthread.php?t=1783272