Question / Help Only one screen found when using VNC

[Lumpiasty]

Hi
I was trying to set up something like on this picture:

I want to control OBS running on PC from Laptop. Second screen is not an option. I want to have seperate mouse and keyboard for Screen 1 and VNC. VNC Server is set up like this (link) (PC is running Arch Linux with LightDM and XFCE with TigerVNC starting new X session for every connection).
Problem is that when I start OBS in VNC, it can see that VNC screen but not Screen 1. Any ideas why and how can fix it? Thanks in advance

 

[Narcogen]

Probably you'd have to configure TigerVNC to connect to the existing session (the one running Screen 1) and not a new X session.

 

[Lumpiasty]

The problem is that I don' t want to do that. I want sperate mouse and keyboard (and screen) to control OBS, and I don't want to show OBS on Screen 1

 

[Narcogen]

I don't think OBS will be allowed to access an X window session separate from the one it launched in. Maybe if it launched in a second virtual screen that was part of session 1?

 

[Lumpiasty]

But how to do it? I want to have seperate keyboard and mouse for screen 2, When someone is doing something (no matter what) on Screen 1, I want to control OBS (and do other things) in Screen 2 (VNC), without showing it in Screen 1. That's what I want to achieve, but I dont know how. OBS with capturing card on laptop is not option because it's just too old (core2duo p9300 with some Intel GMA) and OBS dont work on it.

 

[Narcogen]

You're trying to prevent Session 1 from controlling OBS while allowing OBS running in Session 2 to capture the display of Session 1. I don't think that's possible. The same restriction that allows Session 2 to have separate mouse/keyboard control prevents OBS from seeing the other session... I think. Perhaps someone with deeper understanding can comment. But as far as I can see, OBS is not going to be allowed by the system to capture a separate X Windows session from the one it launches in-- those other sessions aren't just virtual displays run by the same hardware, it's an entirely separate user space-- even if both sessions are logged in as the same user. And if you attach to the same session, then they'll share input.

 

[Lumpiasty]

I had little idea:

X Server field. But i don't have idea what to enter here, because localhost nor 127.0.0.1 isn't working. Maybe someone smarter than me will know?

 

[Narcogen]

Had a look at this thread?

https://obsproject.com/forum/threads/possible-to-capture-from-another-x-server.21499/

Seems to indicate what you want is possible just by entering in a session identifier

like

:1
or
:2

 

[Lumpiasty]

No, i havent seen that, but that doesn't solve my problem.
But I noticed something else: when I try to enter :0 in Screen 1, i get image of screen 1 and when I enter :1 i get no image, but on VNC when I enter :0 i get no image and when I enter :1 I get image of VNC.
EDIT: I noticed also that when I type :0 in VNC I get No protocol specified in Terminal, but on other screen that don't extist like :3 i dont get that.