kirsle.net/www/raspberrypi.html

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<h1>Raspberry Pi</h1>

This page is my personal reference/cheat sheet for Raspberry Pi
related topics.<p>

<h1>Raspbian Wheezy</h1>

<h2>Install the XFCE Desktop</h2>

To install XFCE to use it instead of the default LXDE.

<pre>$ sudo apt-get install task-xfce-desktop</pre>

<h2>XFCE for the TightVNC Server</h2>

After setting up TightVNC, you can configure it to load the XFCE desktop environment
by modifying your <code>~/.vnc/xstartup</code> file. Mine looks like this:

<pre>#!/bin/sh

xrdb $HOME/.Xresources
xsetroot -solid grey
export XXL_XMODMAP_DISABLE=1
/usr/bin/xfce4-session</pre>

<ul>
    <li>Use <code>vncpasswd</code> to set a password.</li>
    <li>Use <code>vncserver</code> to start a VNC server (defaults to display :1
        for the first server)</li>
    <li>Use <code>vncserver -kill :1</code> to kill a server.
</ul>

<h2>Pi User Groups</h2>

If you add other users to the system, you'll probably want them to be members of
all the groups the pi user is part of. So...

<ul>
    <li>adm</li>
    <li>dialout</li>
    <li>cdrom</li>
    <li>sudo</li>
    <li>audio</li>
    <li>video</li>
    <li>plugdev</li>
    <li>games</li>
    <li>users</li>
    <li>netdev</li>
    <li>input</li>
</ul>

<pre>$ sudo usermod -a -G adm,dialout,cdrom,sudo,audio,video,plugdev,games,users,netdev,input <ins>kirsle</ins></pre>

<h2>Sound access for other users</h2>

If you add a second user to the system besides the default "pi" user, they don't
get access to the sound device by default - so for example, the XFCE Mixer applet
gives a gstreamer error.

To get the XFCE Mixer applet to work, make sure the gstreamer plugins are
installed.

<pre>$ sudo apt-get install gstreamer0.10-plugins</pre>

<h3>Method 1: audio user group</h3>

This is probably the preferred way. Make sure your alternate user is a member of
the <code>audio</code> group.

<h3>Method 2: Add your user to the ACL for /dev/snd</h3>

<pre>$ sudo setfacl -m u:<ins>kirsle</ins>:rw /dev/snd/*</pre>

You'll need to do this <em>before</em> starting the VNC server. If you've already
started one, shut it down and restart it.

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