VirtualVncScreen

Create a remote monitor via VNC (x11vnc)

This script is an automatization of an virtual vnc connected monitor.

Use scenario:

Use other device monitor as your main machine monitor

My use case:

I have a Raspberry pi (Rpi) with a monitor connected to it and my laptop and an hdmi monitor connected to it, on my laptop I run virtualVncScreen.sh this is the vnc server connected to virtual monitor created via xrandr. And on my Rpi, I run vncViewerListener.sh and pass as argument the ip I want to listen. I also added to autostart those scripts, so when machines reboots both still running properly.

Install and config

This script require xrandr and x11vnc for running properly,

sudo apt install xrandr x11vnc

And I'm using xtightvncviewer to connect to x11vnc server (with virtual monitor)

sudo apt install xtightvncviewer

Check if virtual monitor is enabled xrandr --verbose

eDP1 connected primary 

...

HDMI1 disconnected

...

VIRTUAL1 connected (normal left inverted right x axis y axis)
        Identifier: 0x46
        Timestamp:  3213300
        Subpixel:   no subpixels
        Clones:     VIRTUAL2
        CRTCs:      3 4
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        non-desktop: 0 
                supported: 0, 1
  1440x900_60.00 (0x1cc) 104.580MHz -HSync +VSync
        h: width  1440 start 1520 end 1672 total 1904 skew    0 clock  54.93KHz
        v: height  900 start  901 end  904 total  931           clock  59.00Hz
VIRTUAL2 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x47
        Timestamp:  3213300
        Subpixel:   no subpixels
        Clones:     VIRTUAL1
        CRTCs:      3 4
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        non-desktop: 0 
                supported: 0, 1

If you don't have VIRTUAL1 and VIRTUAL2 check This topic

Some changes may bee required to virtualVncScreen.sh, you may need to modify the screen resolution in my case is 1440x900 wiith 60 refresh rate.

function initVirtualMonitor {
	gtf 1440 900 60
	xrandr --newmode "1440x900_60.00"  104.58  1440 1520 1672 1904  900 901 904 931  -HSync +Vsync
	xrandr --addmode VIRTUAL1 1440x900_60.00
	xrandr --output VIRTUAL1 --mode 1440x900_60.00 --pos 0x540 --output HDMI1 --pos 1440x0
	xrandr --verbose
}

Change all the --mode <your_new_mode_name> everywhere

emptyshell / virtualvncscreen Goto Github PK