# Gazebo simulation issue

**URL:** <https://discuss.px4.io/t/gazebo-simulation-issue/17898>\
**Category:** PX4 Autopilot\
**Created:** [July 29, 2020, 6:29am UTC](https://discuss.px4.io/t/gazebo-simulation-issue/17898 "2020-07-29T06:29:18Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![xizhang](https://discuss.px4.io/user_avatar/discuss.px4.io/xizhang/32/6716_2.png) [@xizhang](https://discuss.px4.io/u/xizhang)\
**Post date:** [July 29, 2020, 6:29am UTC](https://discuss.px4.io/t/gazebo-simulation-issue/17898/1 "2020-07-29T06:29:18Z")

</div>

Hi everyone, I am new in using PX4 on jetson tx2 board. I follow the tutorial in using gazebo for simulation. When I execute ‘make px4\_sitl gazebo’. The gazebo runs properly, but I cannot successfully run the command like “commander takeoff” in the terminal. What could be the issue? Appreciate your help in advance.

my terminal display these few lines in last:

- SYS\_AUTOCONFIG: curr: 1 → new: 0  
INFO [dataman] Unknown restart, data manager file ‘./dataman’ size is 11798680 bytes  
INFO [simulator] Waiting for simulator to accept connection on TCP port 4560  
Gazebo multi-robot simulator, version 9.0.0  
Copyright (C) 2012 Open Source Robotics Foundation.  
Released under the Apache 2 License.  
[http://gazebosim.org](http://gazebosim.org)

[Msg] Waiting for master.  
[Msg] Connected to gazebo master @ [http://127.0.0.1:11345](http://127.0.0.1:11345)  
[Msg] Publicized address: 192.168.0.196  
[Wrn] [Publisher.cc:141] Queue limit reached for topic /gazebo/default/user\_camera/pose, deleting message. This warning is printed only once.