From e5166187e22d7628ac938e826535c529af681343 Mon Sep 17 00:00:00 2001
From: rope <fredrik@nordhammer.it>
Date: Thu, 20 Aug 2026 13:59:17 +0100
Subject: [PATCH] hyprland: don't auto-switch monitor to HDR for fullscreen
 video

---
 settings/hyprland.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/settings/hyprland.nix b/settings/hyprland.nix
index c62934a..3f97f50 100644
--- a/settings/hyprland.nix
+++ b/settings/hyprland.nix
@@ -175,6 +175,10 @@ in
 
             render = {
               direct_scanout = false;
+              # Fullscreen video advertising HDR made Hyprland flip the monitor
+              # into HDR mode mid-playback (flicker + "wide color gamut ... not
+              # in 10-bit mode" toast, since DP-3 is 8-bit). Keep HDR off.
+              cm_auto_hdr = 0;
             };
 
             animations = {