i have two environment for testing ros.

first is windows 11 + WSL2 + ubuntu 20.04 + ros2 galactic, and it works well.

but second, raspberry pi4 + ubuntu 20.04 server + ros2 galactic, doesn't share there topic.

if i command

ros2 topic pub /test std_msgs/String "data: hello"

-

<first terminal>

    $ ros2 topic pub /test std_msgs/String "data: hello"
publisher: beginning loop
publishing #1: std_msgs.msg.String(data='hello')

publishing #2: std_msgs.msg.String(data='hello')

publishing #3: std_msgs.msg.String(data='hello')

publishing #4: std_msgs.msg.String(data='hello')

publishing #5: std_msgs.msg.String(data='hello')

publishing #6: std_msgs.msg.String(data='hello')

publishing #7: std_msgs.msg.String(data='hello')

first environment works well.

 <Env1 Second terminal>
 $ ros2 topic list
/parameter_events
/rosout
/test
 $ ros2 topic echo /test
data: hello
---
data: hello
---
data: hello
---
data: hello
---
data: hello
---
data: hello
---
data: hello
---

but in second environment,

<Env2 Second terminal>
     $ ros2 topic list
    /parameter_events
    /rosout
     $ ros2 topic echo /test
    WARNING: topic [/test] does not appear to be published yet
    Could not determine the type for the passed topic

there is no topic '/test'

i used screen, Tmux, Alt + F2 for tty2 for second terminal in Env2

but /test topic still dose not apeared in other terminal.

what can i do for subscribe /test topic?