# Revision history [back]

It looks like you've somehow set the "use_sim_time" parameter to true, but you don't have a clock source (ie: rosbag play --clock or some other source, like Gazebo).

Since you're using tf, WallTime isn't an option.

You can check the status of the use_sim_time parameter by using rosparam.

rosparam get use_sim_time


And if it is set somehow, you can reverse it by running:

rosparam set use_sim_time false

 2 No.2 Revision 130s 9589 ●171 ●271 ●298 http://www.linkedin.co...

It looks like you've somehow set the "use_sim_time" parameter to true, but you don't have a clock source (ie: rosbag play --clock or some other source, like Gazebo).

Since you're using tf, WallTime isn't an option.

You can check the status of the use_sim_time parameter by using rosparam.

rosparam get use_sim_time


And if it is set somehow, you can reverse it by running:

rosparam set use_sim_time false