Ubuntu/Bespin

Setup

Aptitude update

During installation, we allow setup to join the wifi network. On first boot, the network manager will be running and will be connected to the same wifi network. We will disable network manager eventually, but first get some software.

sudo apt-get update
sudo apt-get -y install vim gnome-tweak-tool net-tools

Set caps lock as a control key.

Allow sudo for user

Create wheel group:

sudo groupadd wheel

Add user to group:

sudo usermod -a -G wheel <your-username-here>

Allow wheel group users passwordless sudo, first use visudo to edit the sudoers file:

EDITOR=vi visudo

Now add this line to the end:

%wheel ALL=(ALL) NOPASSWD: ALL

Install ssh

Install ssh and server:

sudo apt-get install ssh

Start the server:

sudo service ssh start

Configure WPA Supplicant

We want to configure wifi manually, and disable the network manager. This requires some preparation to manually join a wifi network with wpa supplicant.

First set your wpa supplicant to join a wifi network.

/etc/wpa_supplicant/wpa_supplicant.conf

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="yournetworkhere"
    proto=RSN
    key_mgmt=WPA-PSK
    pairwise=CCMP TKIP
    group=CCMP TKIP
    psk="yourpskhere"
}

Next add the 2 usb wifi devices to network interfaces file. The following etc network interfaces file assumes that wlan0 will be joining an existing wifi network, and wlan1 will be in manual mode so it can be used as an AP.

/etc/network/interfaces

allow-hotplug wlan0
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface wlan0 inet dhcp

allow-hotplug wlan1
iface wlan1 inet static
    address 192.168.10.1
    netmask 255.255.255.0
    gateway 192.168.10.1

except actually the iface names were dependent on the mac addresses of the wifi cards.

WPA Supplicant Startup Service

Copy a wpa supplicant service template:

sudo cp /lib/systemd/system/wpa_supplicant.service /etc/systemd/system/wpa_supplicant.service

Edit the file

sudo vim /etc/systemd/system/wpa_supplicant.service

Change this line from this:

ExecStart=/sbin/wpa_supplicant -u -s -O /run/wpa_supplicant

to this:

ExecStart=/sbin/wpa_supplicant -u -s -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlan0

Also, remove the following line if it is present:

Alias=dbus-fi.w1.wpa_supplicant1.service # DELETE ME!

Now enable this service to start on boot:

sudo systemctl enable wpa_supplicant.service

Dhclient Startup Service

Create a dhclient startup service:

/etc/systemd/system/dhclient.service

[Unit]
Description= DHCP Client
Before=network.target

[Service]
Type=simple
ExecStart=/sbin/dhclient wlan0 -v
ExecStop=/sbin/dhclient wlan0 -r

[Install] 
WantedBy=multi-user.target

Enable the dhclient startup service to start on boot:

sudo systemctl enable dhclient.service

Requesting Static IP

If you want to request a static IP from the router, add this to the dhclient config file:

/etc/dhcp/dhclient.conf

interface "wlan0" {
     send dhcp-requested-address 192.168.0.122;
}

Disable Network Manager

Next step is to disable the network manager.

sudo systemctl disable network-manager
sudo systemctl stop network-manager

Don't uninstall it, because that will uninstall a bunch of other important gnome packages and you'll be left with a stupid broken ubuntu.

Now reboot

sudo reboot now

Test Wifi

Test that everything is working as expected by running the ifconfig and iwconfig commands. ifconfig should show an IP address for the wlan0 interface that has the wpa supplicant defined in the network interfaces file. iwconfig should show the name of the wifi network that the wifi card is connected to.

If you don't have an IPv4 address, troubleshoot with the following commands:

Check if you can reach the internet:

ping google.com

Check logs from dhcp service (this gets an IP address from the router and is the most likely culprit):

sudo service dhclient status

Check logs from wpa supplicant:

sudo service wpa_supplicant status

Tweaking Gnome

Now tweak it:

• Tweak tools
• Set up like a mac
• plank and startup service
• albert and startup service