Package: gazebo Version: 11.0.0+dfsg1-4+b3 context: after reading the "beginner:model editor" tutorial while on the move, I tried to reproduce it from memory: creation of links, but manual positionning of wheels and then creation of joints.
Then getting back to the tuto I wanted to try the "align links" feature, so I cancelled my joint creations and some wheel positionning with "undo", moved a wheel some more manually. Then I clicked the "create joint" button and the UI bombed out, with this in the terminal: $ gazebo Node::Advertise(): Error advertising topic [/ground_plane/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd]. Did you forget to start the discovery service? Node::Advertise(): Error advertising topic [/ModelPreview_0/link_3/joint_cmd]. Did you forget to start the discovery service? $ echo $? 255 $ The only non-trivial information Icould find in logs is: $ cat .gazebo/client-11345/default.log Gazebo multi-robot simulator, version 11.0.0 Copyright (C) 2012 Open Source Robotics Foundation. Released under the Apache 2 License. http://gazebosim.org (1595859321 302209616) [Msg] Waiting for master. (1595859321 313861858) [Msg] Connected to gazebo master @ http://127.0.0.1:11345 (1595859321 313892719) [Msg] Publicized address: 10.100.0.1 (1595859321 315079664) [Wrn] [GuiIface.cc:297] Couldn't locate specified .ini. Creating file at "/home/yann/.gazebo/gui.ini" (1595859321 315166142) Loaded .ini file from: "/home/yann/.gazebo/gui.ini" (1595859322 504761214) [Wrn] [ModelDatabase.cc:212] Unable to connect to model database using [http://models.gazebosim.org//database.config]. Only locally installed models will be available. (1595859323 371021704) No spacenav daemon found. Spacenav functionality is disabled (1595859350 124401526) [Wrn] [Publisher.cc:136] Queue limit reached for topic /gazebo/default/user_camera/pose, deleting message. This warning is printed only once. (1595859858 594394295) [Wrn] [ModelCreator.cc:2948] Couldn't find top level visual for [ModelPreview_0::link_0]. Not selecting in 3D scene. (1595859862 562385788) [Wrn] [ModelCreator.cc:2948] Couldn't find top level visual for [ModelPreview_0::link_0]. Not selecting in 3D scene. (1595860378 375175810) [Err] [JointControlWidget.cc:393] Error advertising topic [/ground_plane/joint_cmd] (1595860423 124412332) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd] (1595860461 619782521) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3/joint_cmd] (1595860473 15299013) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd] (1595860482 492269163) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd] (1595860504 878776990) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd] (1595860507 364929069) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd] (1595860512 358209615) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd] (1595860532 480516675) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd] (1595860537 803114798) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_0/joint_cmd] (1595860559 177641078) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd] (1595860753 122460883) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone_1/joint_cmd] (1595860793 835628746) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3_clone/joint_cmd] (1595860866 534162486) [Err] [JointControlWidget.cc:393] Error advertising topic [/ModelPreview_0/link_3/joint_cmd]