You wish to screen share using which application? What is your desktop environment? (Gnome, xfce, …) What is the graphics hardware (Nvidia, Intel, …)? Techniques and support differ by application, desktop environment, drivers. With some additional information such as that someone should be able to provide some guidance.
Yep, its not that i am searching for, also it doesnt support Wayland and:
The application does not support
• Alfacast is not DLNA™, UPnP™ media render or media server
• Alfacast is not Apple AirPlay™ receiver or transmitter
• Alfacast is not Google Chromecast™ receiver or transmitter
• Alfacast is not Miracast™ receiver or transmitter
anyway thank U for help, i guess there is no such a thing as desktop mirroring here.