Hello guys, just wanted to share how setup bluetooth under my slackware 13.37. \\
The objective of this post is to connect a device via bluetooth, a phone or broadband modem, to connect to the internet.
It's a little bit techy but it gets the job done.I will try to make it easy on you guys. \\
You might also refer to http://slackwiki.org/Bluetooth as it is complete.

<note important>I'm on IBM Thinkpad R61i, \\ Slackware 13.37, \\ Kernel 2.6.37.</note>

To summarize what I did,
====== Install bluez subsystem. ======
It handles all bluetooth communication to the kernel) - http://www.bluez.org/download/ \\
http://www.kernel.org/pub/linux/bluetooth/bluez-4.96.tar.gz \\ \\
For OBEX connectivity: \\ \\
http://www.kernel.org/pub/linux/bluetooth/obexd-0.42.tar.gz \\ \\
For Bluetooth data dump and protocol analysis:  \\ \\
http://www.kernel.org/pub/linux/bluetooth/bluez-hcidump-2.1.tar.gz

====== Create bluetooth ON/OFF switch ======
Since my internal bluetooth device manufacturer is IBM, the switch can be located in **/proc/acpi/ibm/**
Depending on your hardware, you can find your bluetooth switch in **/proc/acpi/**
Copy this file to **/usr/bin** and make it executable **chmod +x /usr/bin/blu**
<file bash blu>
#!/bin/bash
cat /proc/acpi/ibm/bluetooth | awk '{ print $2 }' | while read line;
 do
   if [ $line == "enabled" ]; then
       echo disable > /proc/acpi/ibm/bluetooth
   else
       echo enable > /proc/acpi/ibm/bluetooth
   fi
   break
 done
</file>

====== Get a PIN Helper ======
For any bluetooth connection, you will need to have a pin helper agent to complete a pairing.
Old distribution of bluez includes a utility passkey_agent. However the new one does not include one.
So we will need to use either 

**bluez-gnome**

http://www.kernel.org/pub/linux/bluetooth/bluez-gnome-1.8.tar.gz

or **kdebluetooth**

http://sourceforge.net/projects/kde-bluetooth/files/kdebluetooth4/

I'm using KDE so I chose kdebluetooth. To run it, in konsole, type

<code bash>kdebluetooth4 &</code>

Make sure the Agent is registered with dbus. A bluetooth tray icon will appear at the taskbar.

====== Connecting a modem via bluetooth ======
First, you need to bring up the internal bluetooth device by typing
<code bash>hciconfig</code>

Your output should be like this. The hci0 should be up

{{:slackware:1.png?direct&300|}}

If not, you need to bring it up. Check your blu switched too in case it is turned off.

<code bash>hciconfig hci0 up</code>

Scan for bluetooth devices, type

<code bash>hcitool scan</code>

A list of your bluetooth devices will show up. Take note of your MAC Address of your modem device / phone.

Next, search for DUN (Dialup Networking) capabilities of the device.

<code bash>sdptool search DUN</code>

The output should be something like this.

{{:slackware:2.png?direct&300|}}

Take note of the channel, which in this case is 1. Next step is to bind the phone modem to rfcomm via bluetooth.

<code bash>rfcomm bind 0 11:22:33:44:55:66 1</code>

Note the syntax is, rfcomm bind **<dev> <bdaddr> [channel]** . The dev is 0 for **/dev/rfcomm0**, **bdaddr** is your phone's MAC and **channel** is **1**, the DUN channel from the sdptool command.

Your bluetooth modem is now binded to **/dev/rfcomm0**. You can use your favorite dialer such as [[wp>kppp]] or [[wp>wvdial]] to connect to your network carrier.

Thanks. I hope this helps.

[tag:rfcomm wvdial hciconfig hcitool sdptool maxis broadband kdebluetooth4 bluez bluez-gnome slackware thinkpad]