XBMC on the O2 Joggler with touchscreen support
Sunday, May 9th, 2010Equipment Required :
First off we must remember the O2 joggler uses the 'Poulsbo' or US15W chipset from Intel which is basically very badly supported software-wise in linux. We need to use the Intel proprietary IEGD driver to get any kind of openGL acceleration. Because of this, and the fact I did not have enough time to make it work nicely in Arch Linux nor Meego, I went for a prebuilt Ubuntu image for the joggler.
I used disca's 1.3 build which requires a 4GB USB stick. Follow the instructions here to install it to your usb stick using dd or other.
Open the joggler to fit your USB flash drive (or very cheap SSD!)
This is not essential, however it leaves an empty USB port (to use with a USB sound card!) and makes the device look much neater. However you may want to leave that till the last minute. Also do not do this if you love Wifi. If you want wifi, buy a USB hub.
Open the joggler - this is actually really easy - just carefully take away the sticker on the bottom of the device. Unscrew the 4 small screws, and just pull. There are plastic 'clips' on either side and two on the top. This should not be too hard to do. Here is a youtube video if you are still worried.
Remove the Wifi card. This required me to take off two bits of tape, and pull away at the foam holding it in place a little. Then just place your USB stick inside. After all is done, close it up and boot. Bootup is actually faster than the original openpeak software! Once booted, an SSH server is in place (user: joggler, password: joggler) so I would ignore the onscreen keyboard and everything else.
Installing XBMC
I chose to go with an SVN build of XBMC, but feel free to get a stable build, there should be no difference. I shamelessely took the instructions from this blog. I'll make it quicker and up to date for Ubuntu 9.10 (karmic koala)
Add the following repository to /etc/apt/sources.list:
deb http://ppa.launchpad.net/team-xbmc-svn/ppa/ubuntu karmic main
deb-src http://ppa.launchpad.net/team-xbmc-svn/ppa/ubuntu karmic main
Import the key from the PPA, update our local database and install xbmc.
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 64234534
sudo apt-get update
sudo apt-get install xbmc
We just need to launch XBMC once, and then set it to windowed mode using a USB keyboard or synergy - Settings -> System -> Video Output -> Resolution.
Installing and configuring openbox
You'll need a window manager in order to be able to start XBMC in non fullscreen mode to get the mouse emulating touchscreen to work. This is a little annoying but it's the easiest workaround (and only) I could find. Openbox was used because I'm (a little) familiar with it, otherwise this can work in gnome or anything else you want as long as you manage to take the decors and borders off completely.
sudo apt-get install openbox
mkdir ~/.config/openbox
cp /etc/xdg/openbox/rc.xml ~/.config/openbox
vi ~/.config/openbox/rc.xml
You'll want to remove everything between the "applications" xml tags and insert something like this.
<applications>
<application name="*">
<decor>no</decor>
<shade>no</shade>
<maximized>true</maximized>
</application>
</applications>
vi ~/.config/openbox/autostart.sh
You'll want to use something like this to autostart XBMC. I also autostart a synergy client so I can use the mouse and keyboard from my desktop PC. If you don't know this great piece of software go take a look at their homepage.
(sleep 3s && xbmc) & (sleep 3s && synergyc holm) &
To get openbox to become the default choice, I got lazy. Just login to gnome, log out, then choose the openbox session at the GDM login. This will make it your default choice. I'm too used to having .xinitrc being so easy in Arch Linux, and after a lot of searching could not find an easy way to do it in ubuntu. If anyone knows of a way please tell me!
Fixing the XBMC skin (SVN version only)
If you have launched XBMC and are using the SVN version, then you'll notice a little graphical corruption. This is because the US15W in the joggler can't handle some of the unpacked textures that ship with the SVN builds. This fix was quite hard to find, but look here if you are interested in why this is this exact problem exists.
It's actually quite a simple fix (i'm going to assume you don't want to install SVN on the joggler):
svn co http://xbmc.svn.sourceforge.net/svnroot/xbmc/branches/9.11_Camelot/skin/Confluence
mv Confluence Confluence_stable
scp -r Confluence_stable joggler@joggler:.xbmc/skin/
Then just change the skin to Confluence_stable in Settings->Appearance->Skin
Ok all is done! Now mount some music/video using some NFS/SMB shares and you're good to go! Also check out UPNP if like me you have other XBMC HTPCs around, it's very impressive if a little worrying. To make it a nice setup and not just an experiment, I use a USB soundcard to be able to have a good sound quality. Otherwise the joggler speakers and headphone jack are terrible. I use an old Edirol UA-1EX that I had lying about. Anything using the snd-usb-audio module in linux should work very well.
Notice, some things are impossible to do with just touchscreen in confluence. I'd recommend having a go with Confluence Touch! skin. But there are quite a few different ones. So far I haven't found one I really like.
Fixing sound playback
This is a problem with XBMC and lots of audio sound cards. Basically the audio gets garbled as the sound buffer runs out of memory. I've had this on my acer revo and my O2 joggler with the external soundcard (I bet the problem is the same on the internal speakers). The easy fix is to use pulseaudio (which has a massive buffer). If you're using Gnome on the joggler ubuntu build then it will work. But using only openbox you'll need to start pulseaudio. Just add this to your autostart.sh
(sleep 1s && pulse-session) &
You'll have to make sure that your XBMC audio playback device is set to your default Pulseaudio sound card. gnome-volume-controller will help you set a default card.
Making Confluence faster
You'll notice the confluence skin is a little slow at displaying images. So i just resized and croped them all to the right size for the joggler (800x480). I also replaced the default music one and changed the apple to a tux... (i'm not even sure where that one gets displayed!). Grab the .tar.gz here. You'll have to extract it in the backgrounds folder in the confluence skin folder. My advice is to copy the confluence skin folder from '/usr/share/xbmc/skin/Confluence' to '~/.xbmc/skin/ConfluenceSmall'.
