Chico3

We installed Ubuntu 8.04 LTS Desktop 'Hardy Heron' 64 bit on the black 17" Tsunami laptop, dubbed chico3. This machine will be primarily used to test and manage demos on the iCub (a task that used to be done on Chico2, now not anymore).

For systems specifications click here.

Operating system installation

We chose to go for Ubuntu 8.04 because it is proven to be stable and working well with the latest versions of ACE, YARP and OpenCV (as of May 2009).

Partitions

We chose the 'Guided - use entire disk' option, which yielded the following:

Hard disk partitioning

size	mountpoint	filesystem
287GB	/	ext3
8GB		swap

Ubuntu installation parameters

• machine name: chico3
• user name: icub

Operations after first boot

Operations performed after the standard installation:

• choose Main server (rather than Portugal server, which is incomplete) as the software repository. You can do this in System -> Administration -> Synaptic Package Manager -> Settings -> Repositories -> Download from: Main server
• system update
• enabled nvidia proprietary drivers (necessary to obtain a decent screen resolution)
• removed the package network-manager-gnome

Other operations performed

Network

• manually configured the internet connection (/etc/network/interfaces):

  auto lo
  iface lo inet loopback
  
  auto eth0
  iface eth0 inet static
  address 10.10.1.53 <-- this used to be venus' IP; not anymore
  netmask 255.255.255.0
  network 10.10.1.0
  broadcast 10.10.1.255
  gateway 10.10.1.254

• added the following lines to /etc/hosts, to enable running commands like: ping cortex1.

  10.10.1.50	pc104
  10.10.1.51	icubsrv
  10.10.1.52	chico2
  10.10.1.53	chico3
  10.10.1.1	cortex1
  10.10.1.2	cortex2
  10.10.1.3	cortex3
  10.10.1.4	cortex4
  10.10.1.5	cortex5
  10.10.1.41	icubbrain1
  10.10.1.42	icubbrain2

• TODO: disable wifi (wlan0 and wmaster000 interfaces), for security and power consumption reasons

Additional packages and environment variables

• Install some required packages:

  sudo apt-get install gcc g++ make cmake cvs subversion ssh libace-dev libgsl0-dev   <-- pretty much the absolute minimum we need
  sudo apt-get install libncurses5-dev libgtk2.0-dev libgtkmm-2.4-dev libglademm-2.4-dev python-tk libqt3-mt-dev   <-- for graphical stuff
  sudo apt-get install vlc <- to be able to play movies (scientific ones)

• Create a file called ~/.bash_env (used by non-interactive sessions, namely commands launched via yarprun from another machine) containing these lines:

  export ICUB_DIR=/home/icub/iCub
  export ICUB_ROOT=$ICUB_DIR
  export YARP_DIR=/home/icub/YARP/yarp2
  export YARP_ROOT=$YARP_DIR
  export PATH=$PATH:$ICUB_DIR/bin
  export PATH=$PATH:$YARP_DIR/bin
  export ICUB_ROBOTNAME=iCubLisboa01

• Copy all that stuff at the bottom of ~/.bashrc, too (this step could be redundant, provided that we always source .bash_env - TO CHECK):

  cat ~/.bash_env >> ~/.bashrc

• Then, before the following line of /etc/bash.bashrc

  [ -z "$PS1" ] && return

add this:

  # per-user environment variables (non-interactive and interactive mode)
  source $HOME/.bash_env

• In order to have multi-screen external monitor support for beamers,

  apt-get install nvidia-settings
  sudo nvidia-settings

In the 'X Server Display Configuration' menu, select the 'Separate X screen' configuration. Then, edit /etc/X11/xorg.conf (make a backup first) by doing the following under Section 'ServerLayout': switch the Screen 0 with the Screen 1 strings. Restart the xserver and enter nvidia-settings again, you will get some errors in the terminal because of the manual change, furthermore you will now see the correct screen numbering. To resolve the error in the configuration press "save X configuration file". Restart xserver, everything should be ok.

Subversion

We have set the following parameter in /etc/subversion/config:

 store-passwords = no

This implies that SVN will ask you for your password every time you do a commit. (Don't worry about changing icub's personal ~/.subversion/config file: the parameter is not actually set there, so the global /etc setting is used.)

Additional RobotCub software

OpenCV

Ubuntu prepackaged version 1.0.0-4:

  sudo apt-get install libcv1 libcvaux1 libcvaux-dev libcv-dev libhighgui1 libhighgui-dev opencv-doc python-opencv 

iCub: downloading the repository

In /home/icub, do:

 cvs -d vislab@cvs.robotcub.org:/cvsroot/robotcub co iCub

For now, don't compile iCub but start installing YARP instead. (This is the most general approach which always works. However, since this machine does not have special iCub hardware to be found by YARP, like in the case of the PC104, then in this case we could've probably compiled straight ahead.)

YARP

• Type this from the homedir (/home/icub):

  mkdir ~/YARP
  cd ~/YARP
  cvs -d:pserver:anonymous@yarp0.cvs.sourceforge.net:/cvsroot/yarp0 login
  cvs -z3 -d:pserver:anonymous@yarp0.cvs.sourceforge.net:/cvsroot/yarp0 co -P yarp2
  cd yarp2

• (SKIP THIS POINT, AS THIS MACHINE IS NOT ATTACHED TO dragonfly esdMotionControl headcalibrator xsensmtx) Enter yarp2/conf and do:

  cp ExternalModules.cmake.template ExternalModules.cmake

then write the following lines in ExternalModules.cmake:

  SET(EXTERNAL_MODULES icub)
  SET(icub_DIR "/home/icub/iCub/src/modules")

• Proceed with the configuration and compilation:

  ccmake .

Click 'c' when CMake starts, then enable:

  COMPILE_NEW_YARPVIEW  <-- right?
  CREATE_DEVICE_LIBRARY_MODULES
  CREATE_GUIS
  CREATE_LIB_MATH

Click 'c' again, then choose

  ENABLE_yarpmod_opencv_grabber

Click 'c' a couple of times more, until nothing happens when you do it. Now hit 'g': generate and quit.

  make
  make test
  sudo make install

iCub: compiling and installing

• Off we go:

  cd /home/icub/iCub
  ccmake .
  c   <-- whenever necessary

• Enable these modules:

  BUILD_IN_ROOT
  CREATE_GUIS_GTK
  CREATE_GUIS_GTKMM
  CREATE_GUIS_QT

• And finally:

  g
  make
  sudo make install

More VisLab-specific configuration

Passwordless connection to other machines

• set up passwordless log-in to the Cortex computers:

  #generate the public and private keys on this computer. enter empty strings when prompted for various answers.
  ssh-keygen   
  #the cortex computers (ip addresses 10.10.1.1 to 10.10.1.5) share the same disk, so you need to do the set up only once.

  #copy the public key you just generated to cortex1, on the user account you want to use there (e.g. icub).
  scp /home/icub/.ssh/id_rsa.pub icub@10.10.1.1:   <-- be sure to write the semicolon ":" at the end
  #log in as 'icub' to cortex1
  ssh 10.10.1.1
  #add the public key to the authorized ones
  cat id_rsa.pub  >> ~/.ssh/authorized_keys   
  #remove the id_rsa.pub file and log out from cortex1.
  rm id_rsa.pub
  exit
  exit
  #log in again to each cortex computer, to check that the process worked and they don't prompt for a password.

• set up passwordless log-in to pc104

pc104 boots from a read-only medium, so you cannot modify permanently its authorized_keys file. pc104, though, mounts a part of icubsrv's hard-disk and then runs some scripts from there (see the pc104 page for reference).

  #copy the usual public key to the icubsrv (laptop)
  scp id_rsa.pub icub@10.10.1.51:
  #ssh to icubsrv
  ssh icub@10.10.1.51
  #add the key to the authorized ones
  cat id_rsa.pub >> /exports/code-pc104/pc104/hooks/keys/authorized_keys
  #rm the id_rsa.pub file
  rm id_rsa.pub

PC104 authentication caveat

For pc104 it might be necessary to add a StrictHostKeyChecking=no option argument to ssh (because there are different incompatible keys depending on the pc104 hardware setup, i.e., with or without pen):

  gnome-terminal --window-with-profile=pc104 -e "ssh -o StrictHostKeyChecking=no icub@10.10.1.50 -X"

Customization of GNOME

We used the same buttons that we put on Chico2. We copied the files by typing this on chico2:

  scp ~/Pictures/* chico3:/home/icub/Pictures

and then we manually added the buttons one by one on the top toolbar of chico3.

Adding a new terminal button

Example for the button to open the gnome-terminal on cortex1:

• right click on the panel and select "add to panel"
• select "custom application launcher"
• click on the icon and select the directory where your icons are, typically ~/Pictures/
• click on open, then select the picture for this particular button
• write this in the "command" field:

  gnome-terminal --window-with-profile=cortex -e "ssh icub@10.10.1.1 -X"

• set the name to something like: ssh icub@cortex1

Note about gnome-terminal profiles: the profile we have specified specified (--window-with-profile=cortex) does not exist by default, we need to create it. These profiles are used to give terminals on different machines different colors (e.g., all terminals running in a cortex computer will be blue, terminals local to chico2 will be white, etc.). To create the "cortex" profile do this:

• open a terminal on, say, cortex1
• click on File, select "new profile" and name it "cortex", then choose the colors
• cortex windows usually are blue background with white text, while pc104 windows are yellow with black text.

Nautilus buttons

For the buttons that start the file manager Nautilus on pc104 and on cortex (once again, all cortex computers share the same disk, so you need only one button for them) you should use these lines of code:

  nautilus sftp://icub@10.10.1.50/home/icub/
  nautilus sftp://icub@10.10.1.1/home/icub

After you are done browsing a remote machine disk with Nautilus, don't forget to unmount the volume (right-click the relevant icon on the desktop).

Desktop background

Last but not least, you can change the default Ubuntu desktop background to something fancier: