Gmapping works in Gazebo, but not on robot

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Hello everyone,

another problem with gmapping.

When using the Gazebo simulator gmapping works fine with this command

$ rosrun gmapping slam_gmapping scan:=youbot/scan_front _base_frame:=youbot/base_link _odom_frame:=youbot/odom

As far as I understand this correcly, the arguments should be

• scan:=scan
• _base_link:=base_link
• _odom_frame:=odom

which are the default values, so just starting it with $ rosrun gmapping slam_gmapping scan:=scan should work. The values were obtained from a rosrun tf view_frames (image is a link, click to expand) and rostopic list.

$ rostopic list
/cmd_vel
/cmd_vel_safe
/dashboard/platform_state
/diagnostics
/hokuyo_node/parameter_descriptions
/hokuyo_node/parameter_updates
/joint_states
/map
/map_metadata
/odom
/rosout
/rosout_agg
/scan
/slam_gmapping/entropy
/tf
/tf_static

Gmapping gives with the error:

 [ WARN] [1444300130.237434289]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.gmapping.message_notifier] rosconsole logger to DEBUG for more information.

which then leads me to the debug messages:

[DEBUG] [1444300178.106273471]: MessageFilter [target=odom ]: Added message in frame laser at time 1444300192.911, count now 5
[DEBUG] [1444300178.210528915]: MessageFilter [target=odom ]: Removed oldest message because buffer is full, count now 5 (frame_id=laser, stamp=1444300192.508830)

In Gazebo Gmapping starts up with some messages (Laser pose, values of settings,...) until Registering first Scan appears, on the actual robot there is just the warning message after a time.

I really don't know what the problem is and would be glad about any input!