# No mavlink forwarding when connected to qgc

**URL:** <https://discuss.px4.io/t/no-mavlink-forwarding-when-connected-to-qgc/20953>\
**Category:** PX4 Autopilot\
**Created:** [February 9, 2021, 2:33pm UTC](https://discuss.px4.io/t/no-mavlink-forwarding-when-connected-to-qgc/20953 "2021-02-09T14:33:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Aleksejs](https://discuss.px4.io/user_avatar/discuss.px4.io/aleksejs/32/8167_2.png) [@Aleksejs](https://discuss.px4.io/u/Aleksejs)\
**Post date:** [February 9, 2021, 2:33pm UTC](https://discuss.px4.io/t/no-mavlink-forwarding-when-connected-to-qgc/20953/1 "2021-02-09T14:33:59Z")

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NO MAVLINK FORWARDING WHEN CONNECTED TO QGC  
I am trying to read MavLink messages on UART4 port(PX4\_V5) and it works until I launch QGC app, tried both with connecting FC via USB and via OpenHD(raspberryPi on TELEM1 port). When I close QGC reading mavlink works again, is it some parameter that I’m missing?