Screensharing issues with 11bit support on NixOS not documented

[luksquaresma]

I was going to make a PR with the required modifications but found that may be better to document it here first.

I'm running hyprland in NixOS an lately had some problems with screen-sharing, which did work fine before some changes in my system.

Investigating the issue i was able to pinpoint the change who broke this feature for me: the 10 bit support configuration for monitors on hyprland.

I haven't found this issue documented anywhere, specially not in the screen-sharing page of the wiki: https://wiki.hyprland.org/Useful-Utilities/Screen-Sharing/

Also, it's not documented on the monitors page: https://wiki.hyprland.org/Configuring/Monitors/

Hence, I propose the addition of warnings on both pages.

Additional details:

In my config.nix:

  programs.hyprland = {
    enable = true;
    xwayland.enable = false;
    portalPackage = pkgs.xdg-desktop-portal-hyprland;
  };
  services.hypridle.enable = true;
  xdg.portal = {
    enable = true;
    extraPortals = [
      pkgs.xdg-desktop-portal-gtk
    ];
  };
  fonts.packages = with pkgs; [ nerdfonts ];

My hyprland.conf that did not work for sharing:

monitor=DP-2, 3440x1440@100,   0x0, 1, bitdepth, 10
monitor=DP-3, 1920x1080@60, 3440x0, 1, bitdepth, 10, transform, 3

My hyprland.conf that did work for sharing:

monitor=DP-2, 3440x1440@100,   0x0, 1
monitor=DP-3, 1920x1080@60, 3440x0, 1, transform, 3

I`ll also can create a PR and include the warnings.

---

EDIT:

The issue occurs in the same way when using programs.hyprland.xwayland.enable = true.