RustDesk

https://github.com/rustdesk/rustdesk/wiki/FAQ#when-can-we-get-latest-custom-client-version-after-public-release

strictly no `unwrap`.

@fufesou please verify this pr.

`broken` means it worked before with out your code, but now it does not work with your code. Of couse it is wayland. 

https://github.com/rustdesk/rustdesk/pull/6502#issue-2007175125 > xrandr is only incorrect when fractional scaling(experimental feature) is enabled on gnome on distros like fedora, debian. Ubuntu does not have this issue neither kde, they both support...

@Shylock-Hg you need to have a lot of more test on different distro and desktop env. It is not easy as you think.

And you did not test multiple monitors yet.

> I guess ubuntu or gnome will process mouse cursor scale, but kde not. You can not ensure all gnome works. You need to test mainstream distros before getting this...

This fixes rdp only. Original issue does not mention flatpak/appimage (currently, normal package, our deb/yum, uses uinput, not rdp).

You install the `deb` / `yum` package, it will run `--server`.