Howto Install Debian/lenny in an chroot environment to be used from vncviewer

VNCviewer can be found at http://maemo.org/downloads/product/OS2008/vncviewer/

You will need a quite big sdcard (>1GB, 4GB to install complete gnome) and you have to format it 
as ext3 partition on a linux computer. Ext3 partitions are mounted by maemo 4.x, therefore you can use it
in the N8x0 as a usual sdcard. We assume you put it into the external slot on N800. Otherwize /media/mmc1 has
to be changed to what you need! 

We need the following packages (installed with dpkg -i if you are root in an terminal on the N8x0):
(All packages are build from original debian sources without modification on chinook sdk, but tested to
work on diablo as well)
http://physik.de/770

debootstrap_1.0.9_all.deb

(the following are availible from http://repository.maemo.org/ chinook  as well)
wget_1.11.3-1_armel.deb
binutils_2.18.1~cvs20080103-4_armel.deb

and the program

md5sum

compiled for maemo. I did not find any problems with this packages and programs, but of can not take warranty!

md5sum has to be copied to /usr/bin


now we are ready to bootstrap Debian/lenny



debootstrap --arch armel lenny /media/mmc1/lenny http://ftp.de.debian.org/debian

this takes some time,

now we can chroot to lenny

chroot /media/mmc1/lenny /bin/bash

We are ready to install the rest of the system

run

apt-get update
apt-get dist-upgrade
apt-get install locales
dpkg-reconfigure locales
tasksel

and choose desktop environment


apt-get install tightvncserver

(at the time of this writing there were uninstallable packages and before executing the last command
apt-get remove gnome gnome-spell aspell
had to be executed, leaving a lot of packages which might be uninstalled with apt-get autoremove, but
you will not want to have them uninstalled!!!!)

This will use about 2GByte to install a fairly complete gnome desktop.

Now we need a init.sh script located in /root (in the chroot environment of lenny)

Nokia-N800-23-14:/media/mmc1/lenny/root# cat init.sh 
#!/bin/sh
mount proc /proc -t proc
mount devpts /dev/pts -t devpts
/etc/init.d/dbus start
Xvnc -depth 16 -geometry 800x600 :8&
export DISPLAY=:8
#icewm&
#gdm&
sleep 5
xsetroot -solid "rgb:00/00/30"
gnome-session&
/bin/bash


which can be started by a very simple script e.g.:

Nokia-N800-23-14:~# cat init.sh 
#!/bin/sh
/usr/sbin/chroot /media/mmc1/etch /root/init.sh


Now you can connect to Debian/lenny by vncviewer with

localhost:8

as adress.

Be carefull, the vncserver in lenny is configured without password, you should modify the init script, if you use
your in a not trusted environment, as it is possible connect to the vncserver from a different computer without password!
To avoid this you can use -localhost for Xvnc!



BUG workaround

gnome-settings-daemon

run

gconftool-2 --set --type boolean /apps/gnome_settings_daemon/plugins/mouse/active false
gconftool-2 --set --type boolean /apps/gnome_settings_daemon/plugins/keyboard/active false


from the user in Lenny, which starts the vncserver!



To get sound working:
Install
apt-get install alsa-base alsa-utils libasound2-plugins alsa-oss

and add in lenny /etc/asound.conf , which must contain

Nokia-N800-23-14:/# cat /etc/asound.conf 
# PCM
pcm.!default {
        type alsa_dsp
        playback_device_file ["/dev/dsptask/pcm3"]
        recording_device_file ["/dev/dsptask/pcm_rec1"]
}

# Mixer
ctl.!master {
        type hw
        card 0
}

ctl.!default {
        type dsp_ctl
        playback_devices ["/dev/dsptask/pcm3"]
        recording_devices ["/dev/dsptask/pcm_rec1"]
}

# OSS emulation
#pcm.dsp0 pcm.default
#ctl.mixer0 mixer.default


originally /dev/dsptask muss in lenny /dev/dsptask (mit cp -R) kopiert werden!

(maybe the group rights can be changed)