# Revision history [back]

### Robot shaky after the last gazebo_ros_pkgs update

Hi.

2 days ago, I was unable to spawn my robot in Gazebo due to technical error (a module not found, I did not copy the message). So I re-installed the gazebo_ros_pkgs and other packages (as described in the tutorial) from the sources.

The robot can now be spawned, but it is badly shaky. Again, I made very small modifications on the robot description and even after reverting them, I still have the issue.

Check the bug in video:

The robot description I'm using is more or less stable, and I would say that the bug does not come from it.

Any idea of where this comes from?

### Robot shaky after the last gazebo_ros_pkgs update

Hi.

2 days ago, I was unable to spawn my robot in Gazebo due to technical error (a module not found, I did not copy the message). So I re-installed the gazebo_ros_pkgs and other packages (as described in the tutorial) from the sources.

The robot can now be spawned, but it is badly shaky. Again, I made very small modifications on the robot description and even after reverting them, I still have the issue.

Check the bug in video:

The robot description I'm using is more or less stable, and I would say that the bug does not come from it.

Any idea of where this comes from?

### Robot shaky after the last gazebo_ros_pkgs update

Hi.

2 days ago, I was unable to spawn my robot in Gazebo due to technical error (a module not found, I did not copy the message). So I re-installed the gazebo_ros_pkgs and other packages (as described in the tutorial) from the sources.

The robot can now be spawned, but it is badly shaky. Again, I made very small modifications on the robot description and even after reverting them, I still have the issue.

Check the bug in video:

The robot description I'm using is more or less stable, and I would say that the bug does not come from it.

Any idea of where this comes from?

EDIT 1

New installation tried this morning (10.11), still this kind of messages:

 arnaud@hercules:~$sudo apt-get install ros-hydro-gazebo-ros-pkgs ros-hydro-gazebo-ros-control Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: gazebo-current ros-hydro-gazebo-plugins ros-hydro-gazebo-ros The following packages will be REMOVED: gazebo The following NEW packages will be installed: gazebo-current ros-hydro-gazebo-ros-control The following packages will be upgraded: ros-hydro-gazebo-plugins ros-hydro-gazebo-ros ros-hydro-gazebo-ros-pkgs 3 upgraded, 2 newly installed, 1 to remove and 2 not upgraded. Need to get 47,6 MB of archives. After this operation, 962 kB of additional disk space will be used. Do you want to continue [Y/n]?  Not sure what to answer. ### Robot shaky after the last gazebo_ros_pkgs update Hi. EDIT: The topic of the answers is finally just to have a working ROS/Gazebo installation from the debs (not from the sources). 2 days ago, I was unable to spawn my robot in Gazebo due to technical error (a module not found, I did not copy the message). So I re-installed the gazebo_ros_pkgs and other packages (as described in the tutorial) from the sources. The robot can now be spawned, but it is badly shaky. Again, I made very small modifications on the robot description and even after reverting them, I still have the issue. Check the bug in video: http://www.youtube.com/watch?v=n1huTANij_Q The robot description I'm using is more or less stable, and I would say that the bug does not come from it. Any idea of where this comes from? EDIT 1 New installation tried this morning (10.11), still this kind of messages:  arnaud@hercules:~$ sudo apt-get install ros-hydro-gazebo-ros-pkgs ros-hydro-gazebo-ros-control
Building dependency tree
The following extra packages will be installed:
gazebo-current ros-hydro-gazebo-plugins ros-hydro-gazebo-ros
The following packages will be REMOVED:
gazebo
The following NEW packages will be installed:
gazebo-current ros-hydro-gazebo-ros-control
The following packages will be upgraded:
ros-hydro-gazebo-plugins ros-hydro-gazebo-ros ros-hydro-gazebo-ros-pkgs
3 upgraded, 2 newly installed, 1 to remove and 2 not upgraded.
Need to get 47,6 MB of archives.
After this operation, 962 kB of additional disk space will be used.
Do you want to continue [Y/n]?


EDIT 2

http://gazebosim.org/wiki/Install/Gazebo_and_ROS

So I had to remove Gazebo and install it again to have the right version (1.9.1).

sudo apt-get install ros-hydro-gazebo-ros-pkgs ros-hydro-gazebo-ros-control


With the simple rrbot, I have the following error messages:

setting /run_id to e0dc536c-4fcb-11e3-831d-8ca98268036c
process[rosout-1]: started with pid [5315]
started core service [/rosout]
ERROR: cannot launch node of type [gazebo_ros/gzserver]: can't locate node [gzserver] in package [gazebo_ros]
ERROR: cannot launch node of type [gazebo_ros/gzclient]: can't locate node [gzclient] in package [gazebo_ros]
ERROR: cannot launch node of type [gazebo_ros/spawn_model]: can't locate node [spawn_model] in package [gazebo_ros]


Did not have time to investigate further. I preferred to post it directly and have a look at it afterward.

### Robot shaky after the last gazebo_ros_pkgs update

Hi.

EDIT: The topic of the answers is finally just to have a working ROS/Gazebo installation from the debs (not from the sources).

2 days ago, I was unable to spawn my robot in Gazebo due to technical error (a module not found, I did not copy the message). So I re-installed the gazebo_ros_pkgs and other packages (as described in the tutorial) from the sources.

The robot can now be spawned, but it is badly shaky. Again, I made very small modifications on the robot description and even after reverting them, I still have the issue.

Check the bug in video:

The robot description I'm using is more or less stable, and I would say that the bug does not come from it.

Any idea of where this comes from?

EDIT 1

New installation tried this morning (10.11), still this kind of messages:

arnaud@hercules:~\$ sudo apt-get install ros-hydro-gazebo-ros-pkgs ros-hydro-gazebo-ros-control
Building dependency tree
The following extra packages will be installed:
gazebo-current ros-hydro-gazebo-plugins ros-hydro-gazebo-ros
The following packages will be REMOVED:
gazebo
The following NEW packages will be installed:
gazebo-current ros-hydro-gazebo-ros-control
The following packages will be upgraded:
ros-hydro-gazebo-plugins ros-hydro-gazebo-ros ros-hydro-gazebo-ros-pkgs
3 upgraded, 2 newly installed, 1 to remove and 2 not upgraded.
Need to get 47,6 MB of archives.
After this operation, 962 kB of additional disk space will be used.


EDIT 2

http://gazebosim.org/wiki/Install/Gazebo_and_ROS

So I had to remove Gazebo and install it again to have the right version (1.9.1).

sudo apt-get install ros-hydro-gazebo-ros-pkgs ros-hydro-gazebo-ros-control


With the simple rrbot, I have the following error messages:

setting /run_id to e0dc536c-4fcb-11e3-831d-8ca98268036c
process[rosout-1]: started with pid [5315]
started core service [/rosout]
ERROR: cannot launch node of type [gazebo_ros/gzserver]: can't locate node [gzserver] in package [gazebo_ros]
ERROR: cannot launch node of type [gazebo_ros/gzclient]: can't locate node [gzclient] in package [gazebo_ros]
ERROR: cannot launch node of type [gazebo_ros/spawn_model]: can't locate node [spawn_model] in package [gazebo_ros]


Did not have time to investigate further. I preferred to post it directly and have a look at it afterward.

EDIT 3

My mistake, that came from an old install of gazebo_ros from the source. After cleaning everything, I have been able to start the rrbot, which is working like a charm. My robot, though, is still very very shaky.