I have recently set up a mythbuntu installation, using a PVR150. As I was getting a bit fed up with having to use a 
keyboard to control the front end, I decided to buy a remote. I ended up ordering the Cyberlink IR remote from eBuyer 
(http://www.ebuyer.com/product/129977), and it arrived this morning. There are many reports on the internet of some 
buttons on this remote working, but not all of them. This is due to the fact that the remote is actually registered as 2 
USB devices. The first seems to deal with the Up / Down / Left /Right / Enter / 0-9 buttons, the second deals with the 
"special" keys. The first device works straight away after plugging the IR receiver in, but the second causes more of a 
problem.
<br><br>

I noticed that the device eventid kept on changing between boots on the machine, so I changed a few bits. It is possible to define which event device to use in /etc/lirc/hardware.conf. The relevant line in this file is shown
below:<br><br>
<pre>
REMOTE_LIRCD_CONF="/etc/lirc/lircd.conf"
REMOTE_LIRCD_ARGS="--device=`grep -l 'TopSeed' /sys/class/input/input*/name | tail -n1 | sed -e s'|/name||' | sed -e s'|sys/class/input/input|dev/input/event|'` --driver=dev/input"
</pre>

These two options should already exist in the file, but whatever value they are set to needs tobe changed.


Next, lircd needs to be configured to detect the correct keypresses. To do this, create an empty file 
/etc/lirc/lircd.conf. Then, paste the following into the file:
<pre>begin remote
 name  CYBERLINK
 bits           32
 eps            30
 aeps          100
 one             0     0
 zero            0     0
 gap          135995</pre>
<pre>toggle_bit_mask 0x0
 begin codes</pre>
<pre>end codes</pre>
<pre>end remote</pre>
The next step is to work out the Hex code for each button. In a new terminal, run
<pre>$ sudo hexdump /dev/input/event3</pre>
<strong>NOTE:</strong>You may have to use a different event number; <pre>grep -l 'TopSeed' /sys/class/input/input*/name | tail -n1</pre> should tell you what to 
do.<strong>***</strong><br><br>
Then press a "special" button on the remote (e.g. Back). There should be some output in the terminal that looks like this:
<pre>
Sorry, this is missing right now; I will try to get something here soon.  
Hopefully the example below will help
</pre>

You need to extract the highlighted part, and add a button definition to the /etc/lirc/lircd.conf file, between "begin 
codes" and "end codes" as follows:
<pre>begin codes</pre>
<pre>    &lt;key name&gt;    0x8&lt;extracted part&gt;</pre>
<pre>end codes</pre>
<pre></pre>
For example:
<pre>begin codes</pre>
<pre>    back     0x8001009E</pre>
<pre>end codes</pre>
Do this for every special button on the remote you require. My /etc/lirc/lircd.conf looks like this:
<pre>begin remote</pre>
<pre>
  name  CYBERLINK</pre>
<pre>  bits           32</pre>
<pre>  eps            30</pre>
<pre>  aeps          100</pre>
<pre>
  one             0     0</pre>
<pre>  zero            0     0</pre>
<pre>  gap          135995</pre>
<pre>  toggle_bit_mask 0x0</pre>
<pre>
      begin codes</pre>
<pre>          back                     0x8001009E</pre>
<pre>          Pause                    0x80010077</pre>
<pre>          volumeDown               0x80010072</pre>
<pre>          volumeUp                 0x80010073</pre>
<pre>          Record                   0x800100a7</pre>
<pre>          Guide                    0x80010082</pre>
<pre>          Mute                     0x80010071</pre>
<pre>          ChannelUp                0x80010192</pre>
<pre>          ChannelDown              0x80010193</pre>
<pre>          Play                     0x800100CF</pre>
<pre>          SkipFoward               0x800100A3</pre>
<pre>          SkipBack                 0x800100A5</pre>
<pre>          Menu                     0x8001019A</pre>
<pre>          Fwdwind                  0x800100D0</pre>
<pre>          Rewind                   0x800100A8</pre>
<pre>      end codes</pre>
<pre>
end remote</pre>


The last step is to set up the mapping between these keys and mythtv. The mapping is stored in 
<code>/home/mainuser/.mythtv/lircrc</code>. The format of this file is:
<pre>
begin
    remote = CYBERLINK
    prog = mythtv
    button = Button name from /etc/lirc/lircd.conf
    config = Key to send to mythtv
    repeat = 0
    delay = 0
end
</pre>

My lircrc file is shown below:
<pre>
begin
    remote = CYBERLINK
    prog = mythtv
    button = Mute
    config = |
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = SkipBack
    config = Z
    repeat = 0
    delay = 0
end

begin 
    remote = CYBERLINK
    prog = mythtv
    button = SkipForward
    config = Q
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Pause
    config = P
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Menu
    config = M
    repeat = 0
    delay = 0
end

begin
    prog = mythtv
    button = back
    config = Escape
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = ChannelUp
    config = Up
    repeat = 0
    delay = 0
end

begin 
    remote = CYBERLINK
    prog = mythtv
    button = ChannelDown
    config = Down
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Rewind
    config = <
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Fwdwind
    config = >
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Play
    config = P
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = VolumeDown
    config = [
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Stop
    config = Escape
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = VolumeUp
    config = ]
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Record
    config = R
    repeat = 0
    delay = 0
end

begin
    remote = CYBERLINK
    prog = mythtv
    button = Guide
    config = S
    repeat = 0
    delay = 0
end
</pre>

After restarting lirc (sudo /etc/init.d/lirc restart), mythtv should recognise the remote control!