Hi all, I have been trying for literally DAYS to mirror my screen on a wireless display, without any success obviously, and I am really, really desperate for some help.
I hope I am asking in the correct channel, don’t hesitate to redirect me otherwise. Also, I tried to see if similar topics existed, but I didn’t seem to find any, sorry if that was my mistake.
Onwards:
(I use Fedora 41-Wayland)
Here is the issue: I want to mirror my screen on a wireless display (here a simple samsung projector LFF3). I can connect to the device via Bluetooth, and that way I can cast music/media on the projector but NO image, just the sound. I can actually also mirror the screen when I have a built-in option to mirror screen like Youtube does with “Watch on TV”.
But, I cannot mirror the actual screen of my desktop for instance, or videos on VLC, or a work presentation on PowerPoint, etc. This is what I’m trying to achieve. Other people with a Windows computer have easily made it worked by just pressing WIN+K, but Linux distros apparently lack that option, gods only know why.
I have tried Gnome-Network-Display, as it was what I found was supposed to work when I searched online, but I only get Error messages (see picture). Not very chatty error message too, what I am supposed to get from that haha?
I am unfortunately not a pro at anything-Linux, so I am unsure if there is just a command somewhere that I missed that would magically fix it. I really hope that it’s the case, otherwise I am just floored.
I deeply appreciate any help or advice give, and thank you for your time!
TLDR: Gnome-Network-Displays only give Error message when trying to connect to projector. Internet didn’t give me any answers, will you? 
I’ll try the Gnome Discourse as well, thanks for the tip!