Screen doesn't get extended, but mirrored and rescaled

[martonlente]

Hello,

I really like the simplicity of the script, and how quickly you can connect to an Adroid device's screen with this – especially compared to different manual options. However, there's a major issue that makes it practically unusable: the screen doesn't get extended, but mirrored and rescaled.

This is what happens

• After running the Start VNC app, the screen gets rescaled to a resolution, that equals the sum of the primary monitor, and the screen size you set up when running the configuration. The screen gets rescaled accordingly to the position you set up: so that it becomes wider if you set your position either left or right, or taller if you set your position either bottom or top.
• On the resulted screen, that's larger than your primary monitor, you can pan by moving your mouse to the screen's edges.
• When connecting with your Android device, what you see is the total resulted screen (and you can zoom into any area you wish to see in a Xinerama fashion).

This is what should happen

• The primary monitor's resolution shouldn't change at all. Instead a new virtual screen should be created in the size you specified, to where you could extend your primary screen (similarily if it was a physical monitor). So that the new screen total should be split.

Some extra infos

• When running arandr (a GUI for xrandr) I see one screen, that equals to the total of primary monitor's and defined screen size sum (which confirms the above).
• I run Fedora 35 with Gnome on Xorg. I run proprietary nVidia driver.

If you think this happens because of the nVidia driver, I read a thread that might be useful to debug this here: https://github.com/dianariyanto/virtual-display-linux/issues/9#issuecomment-786389065

Thank you for looking into this in advance!