Hi, $ROS_IP is empty, and $ROS_MASTER_URI is http://localhost:11311. Actually, this got me thinking... I changed the hostname after installation, but I only changed it in /etc/hostname, not /etc/hosts, and thus ROS_MASTER_URI contains localhost instead the actual hostname. Now that I changed /etc/hosts accordingly, it works! Thanks for the hint! Bye, Max On Tue, Aug 17, 2010 at 2:51 PM, Ugo Cupcic wrote: >  Hi, > > Did you check the value of ROS_IP and ROS_MASTER_URI ? > echo $ROS_IP > echo $ROS_MASTER_URI > > Cheers, > > Ugo > > On 17/08/10 13:47, Max Pfingsthorn wrote: >> Dear all, >> >> I'm trying to install cturtle on our robot running ubuntu 10.04.1. For >> some reason, neither the binary nor the svn install works. >> Both give me this error once I try to start roscore: >> >> Unable to contact my own XML-RPC server, this is a highly unusual >> error and should be reported immediately. >> >> The complete output of roscore is: >> >> ---------------------------------------------------------------------------------------------------------- >> $ roscore >> ... logging to /home/robotics/.ros/log/89553aaa-a9fc-11df-8e1f-00508d94cf5c/roslaunch-rugbotB1-11675.log >> >> Unable to contact my own XML-RPC server, this is a highly unusual >> error and should be reported immediately. >> My URI is [http://rugbotB1:44789/] >> Exception in thread ProcessMonitor-1 (most likely raised during >> interpreter shutdown): >> Traceback (most recent call last): >>   File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner >>   File "/home/robotics/ros/ros/tools/roslaunch/src/roslaunch/pmon.py", >> line 490, in run >>   File "/home/robotics/ros/ros/tools/roslaunch/src/roslaunch/pmon.py", >> line 575, in _post_run >> : 'NoneType' object has no attribute 'info' >> ---------------------------------------------------------------------------------------------------------- >> >> The logs don't contain anything useful either: >> >> ---------------------------------------------------------------------------------------------------------- >> [INFO] 2010-08-17 14:39:54,540: roslaunch starting with args >> ['roscore', '--core'] >> [INFO] 2010-08-17 14:39:54,540: roslaunch env is {'LESSOPEN': '| >> /usr/bin/lesspipe %s', 'SSH_CLIENT': '10.70.15.108 42008 22', >> 'LOGNAME': 'robotics', 'USER': 'robotics', 'HOME': '/home/robotics', >> 'PATH': '/home/robotics/ros/ros/bin:/home/robotics/ros/ros/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games', >> 'DISPLAY': 'localhost:10.0', 'LANG': 'en_US.UTF-8', 'TERM': 'xterm', >> 'SHELL': '/bin/bash', 'XDG_SESSION_COOKIE': >> '332a61cb4421b1d9c0b1029d4c601134-1282040895.544628-595877145', >> 'SHLVL': '1', 'PYTHONPATH': >> '/home/robotics/ros/ros/core/roslib/src:/home/robotics/ros/ros/core/roslib/src:', >> 'ROS_ROOT': '/home/robotics/ros/ros', 'ROS_PACKAGE_PATH': >> '/home/robotics/jacobs-ros-pkg/stacks:/home/robotics/ros/stacks/visualization_tutorials:/home/robotics/ros/stacks/visualization_common:/home/robotics/ros/stacks/visualization:/home/robotics/ros/stacks/vision_opencv:/home/robotics/ros/stacks/sound_drivers:/home/robotics/ros/stacks/slam_gmapping:/home/robotics/ros/stacks/simulator_stage:/home/robotics/ros/stacks/simulator_gazebo:/home/robotics/ros/stacks/roslisp_support:/home/robotics/ros/stacks/ros_tutorials:/home/robotics/ros/stacks/robot_model:/home/robotics/ros/stacks/point_cloud_perception:/home/robotics/ros/stacks/physics_ode:/home/robotics/ros/stacks/navigation:/home/robotics/ros/stacks/laser_pipeline:/home/robotics/ros/stacks/laser_drivers:/home/robotics/ros/stacks/joystick_drivers_tutorials:/home/robotics/ros/stacks/joystick_drivers:/home/robotics/ros/stacks/imu_drivers:/home/robotics/ros/stacks/image_transport_plugins:/home/robotics/ros/stacks/image_pipeline:/home/robotics/ros/stacks/image_common:/home/robotics/ros/ >  st >>  acks/geometry:/home/robotics/ros/stacks/driver_common:/home/robotics/ros/stacks/diagnostics:/home/robotics/ros/stacks/common_msgs:/home/robotics/ros/stacks/common:/home/robotics/ros/stacks/camera_drivers', >> '_': '/home/robotics/ros/ros/bin/roscore', 'SSH_CONNECTION': >> '10.70.15.108 42008 10.70.15.68 22', 'LESSCLOSE': '/usr/bin/lesspipe >> %s %s', 'SSH_TTY': '/dev/pts/0', 'OLDPWD': '/home/robotics/ros/ros', >> 'SPEECHD_PORT': '7560', 'PWD': >> '/home/robotics/ros/ros/tools/roslaunch', 'ROS_MASTER_URI': >> 'http://localhost:11311', 'MAIL': '/var/mail/robotics', 'LS_COLORS': >> 'rs=0:di=01;34:ln=01;36:hl=44;37:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx= >  01 >>  ;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:'} >> [INFO] 2010-08-17 14:39:54,540: starting in server mode >> [INFO] 2010-08-17 14:39:54,541: starting roslaunch parent run >> [INFO] 2010-08-17 14:39:54,541: loading roscore config file >> /home/robotics/ros/ros/tools/roslaunch/roscore.xml >> [INFO] 2010-08-17 14:39:54,542: Added core node of type >> [rosout/rosout] in namespace [/] >> [INFO] 2010-08-17 14:39:54,543: start_process_monitor: creating ProcessMonitor >> [INFO] 2010-08-17 14:39:54,543: created process monitor >> >> [INFO] 2010-08-17 14:39:54,543: start_process_monitor: ProcessMonitor started >> [INFO] 2010-08-17 14:39:54,543: starting parent XML-RPC server >> [INFO] 2010-08-17 14:39:54,544: starting roslaunch XML-RPC server >> [INFO] 2010-08-17 14:39:54,544: waiting for roslaunch XML-RPC server >> to initialize >> [ERROR] 2010-08-17 14:39:59,635: Unable to contact my own XML-RPC >> server, this is a highly unusual error and should be reported >> immediately. >> My URI is [http://rugbotB1:44789/] >> ---------------------------------------------------------------------------------------------------------- >> >> Since this happens with both the binary version (cturtle) installed >> via apt and the svn version (latest, not cturtle), it seems something >> more is going on than meets the eye. >> It was a completely new ubuntu install before we installed the binary >> version. Afterwards, we uninstalled all ros packages with apt and used >> the svn-based installation method. >> >> Can anyone guess what's going on? >> >> Thank you all for your help! >> >> Best, >> Max Pfingsthorn >> _______________________________________________ >> ros-users mailing list >> ros-users@code.ros.org >> https://code.ros.org/mailman/listinfo/ros-users >> > > -- > Ugo Cupcic         |  Shadow Robot Company | ugo@shadowrobot.com > Software Engineer  |    251 Liverpool Road | > need a Hand?       |    London  N1 1LX     | +44 20 7700 2487 > http://www.shadowrobot.com/hand/              @shadowrobot > > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users >