The upstart seems to be touch and go, I have had it working previously on another netbook, didn't do anything special just followed the instructions from
http://www.ros.org/wiki/turtlebot_bringup/Tutorials/TurtleBot%20Bringup
turtlebot@maia:/opt/ros/electric/stacks/turtlebot/turtlebot_bringup/upstart$ sudo ./install.bash wlan0
Installing using network interface wlan0.
So, no complaints so far. I reboot the netbook for good luck. When it was started back up, then I tried to stop the service in case it started on startup, which was the case when I had it running on another netbook. However, when I stopped it, I got the following error.
turtlebot@maia:~$ sudo service turtlebot stop
[sudo] password for turtlebot:
stop: Unknown instance:
So, then I went ahead and tried to start the service.
turtlebot@maia:~$ sudo service turtlebot start
turtlebot start/running, process 1734
Looking good. However, the master doesn't seem to be working.
turtlebot@maia:~$ rosnode list
ERROR: Unable to communicate with master!
This is the first part of my problem with the upstart, however, I cannot give you an example of it not starting a proper configuration because it won't start the master. So, first things first, what could be in the way of starting the master?
With the above previously ironed out below, I'll get to the main point of my question. I can restart the turtlebot, I can double check that the turtlebot service is running, however after this if I go ahead try and do a simple teleop, it will not move. If however, I stop the turtlebot service and run the minimal.launch, everything works fine. So I checked the topics running with startup.
I then stop the turtlebot service and do minimal.launch.
It is clear to see that the following are missing with the startup.
/cmd_vel
/turtlebot_node/sensor_state
There haven't been changes made to the config files, so I am wondering why doesn't this work as soon as I download it from the repos? What am I missing?
Originally posted by osuairt on ROS Answers with karma: 69 on 2012-02-08
Post score: 0
Original comments
Comment by tfoote on 2012-02-09:
to debug what's going on can you post the output of ps auxf?
Comment by osuairt on 2012-02-21:
I've gone ahead and updated this question to outline what I was really asking about.