diff --git a/extra/firefox/post-install b/extra/firefox/post-install
index fefa5ab0..c526914b 100755
--- a/extra/firefox/post-install
+++ b/extra/firefox/post-install
@@ -20,4 +20,18 @@ NOTE: For VAAPI to work with amdgpu you must have
 
       CONFIG_CHECKPOINT_RESTORE=y
 
+NOTE: For VAAPI to work you must enable the following 
+      in about:config
+
+      gfx.webrender.all=true
+      media.av1.enabled=false
+      media.ffmpeg.dmabuf-textures.enabled=true
+      media.ffmpeg.vaapi.enabled=true
+      media.ffvpx.enabled=false
+
+      You may also have to set the following
+      environment variable.
+
+      export MOZ_WAYLAND_DRM_DEVICE=/dev/dri/renderD128
+
 EOF