VLC does not play on full screen on second monitor

[Trajce]

HI to All,

I am running VLC on my second screen
VLC media player 3.0.11 Vetinari (revision 3.0.11-0-gdc0c5ced72)

export DISPLAY=:0.1
vlc --full-screen --quiet -L flame.avi

But instead VLC plays to a certain size it does not fills up the entire screen, if someone can help me

Ty very much
Br

[Rémi Denis-Courmont]

Is there a WM on the second display? If not, nothing will take care of the fullscreen hints

[Trajce]

Is there a WM on the second display? If not, nothing will take care of the fullscreen hints

Hello thanks a lot for the answer.
I don't quite understand what is WM on the second display.
But to give a bit more information on my setup, this is a development board running debian 9 (stretch), and i have 2 outputs for displays
so i got 2 displays attached.
When i execute from a remote machine ssh to the dev board
export $DISPLAY=:0.0
vlc --fullscreen -L video.avi
It goes full screen no problem

But when i try the same on the second display
export $DISPLAY=:0.1
vlc --fullscreen -L video.avi

The video plays full screen without the menus of the VLC player but it's not on the entire display
it only occupies 1/3 of the screen.

Thank you very much, appreciate the answer
If you need some more details please just ask.
Br

[Rémi Denis-Courmont]

I'm going to have to assume that you don't have a window manager handling the second display, and that's your problem.