Linux Multi-head issues

[that_guy]

Debian 8 Jessie LXDE Build with amd 1 gig pci-e video card. Worked desperately to get Zaphodheads setup to work, with success! I would be glad to insert my input on that, probably on a different forum ( Maybe a xorg or xrandr forum )

OK Here is the issue. We have a setup where there is a computer in the back with a monitor ( DVI-0 output on video card ) for a sound/media person. When a video is to be displayed, it is played on a video projector ( HDMI-0 output on Video Card ). I have tried to just create an extended screen and then you have the issue of vlc not opening fullscreen on HDMI output without having to move the video manually, cannot make it the primary display because sometimes the projector is not turned on and we still need access to the computer in the back. HDMI output is only for video playback so I found that I would make it a multi-head arrangement ( Basically, DVI-0 output = screen 0 and HDMI-0 = Screen 1 ) Through the VLC menus video gets sent to HDMI display / screen 1. But here is the problem. the 'fullscreen' video plays only in the upper left corner of the HDMI display. The Projector / HDMI displays the resolution great in extended display with no problem. xrandr -q shows the resolution. I wouldn't think that is the problem, but I am here seeking help now.

I am up against a wall with no solution now.. Any Ideas? I am writing this on a different computer, so I will get some xrandr, uname and even some lspci information and display my display configuration files.

Sorry if I am all over the place with this. I figure with some help I can get organized.

[Rémi Denis-Courmont]

Fullscreen placement is normally handled by the window manager, not the application. The application (VLC) just requests enabling or disabling fullscreen. So we can't really help much here; check your window manager support.

[that_guy]

Thank You for the reply. That helps a lot since it is starting to point me in the right direction.