# Mavlink Server Not Receiving any messages

Source: https://forum.modalai.com/topic/2186/mavlink-server-not-receiving-any-messages
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-05-23 14:50:04 UTC by Raza Rizvi
Replies: 0 · Views: 430

## Raza Rizvi · 2023-05-23 14:50:04 UTC

The main issue is [this](https://forum.modalai.com/topic/2184/qgc-not-connecting-to-the-sentinel?_=1684852868048).

In order to debug this, I am trying to see if my mavlink server is working fine.

The send works fine (apparently)

`voxl-mavlink-server --debug_send`

![09d2a003-f6d5-46ca-a9c0-15a315d10674-image.png](https://forum.modalai.com/assets/uploads/files/1684853223509-09d2a003-f6d5-46ca-a9c0-15a315d10674-image.png) 

But, the recv is not working

`voxl-mavlink-server --debug_recv`

![666e08a0-1222-4744-926e-54aed29bdaa7-image.png](https://forum.modalai.com/assets/uploads/files/1684853282948-666e08a0-1222-4744-926e-54aed29bdaa7-image.png) 

Can it be related to the ports mentioned inside the mavlink configuration?

My mavlink conf is:

![eb90948c-3833-497b-aa88-34dcb0a79964-image.png](https://forum.modalai.com/assets/uploads/files/1684853367978-eb90948c-3833-497b-aa88-34dcb0a79964-image.png) 

And the vision-px4 conf. is:

![761d9d12-d7e5-436c-8936-531f0bb6fb51-image.png](https://forum.modalai.com/assets/uploads/files/1684853401939-761d9d12-d7e5-436c-8936-531f0bb6fb51-image.png) 

Please help.