How to Fix Missing or Overridden CRT Screen Effects

Resolving Resource Pack Load Order Conflicts

When multiple resource packs are active at once, packs higher in the list overwrite files from packs below them. If another UI, lighting, or post-processing resource pack uses vanilla shaders, it can block the tube television effect from rendering.

1. Go to Options > Resource Packs.

2. Locate the CRT shader pack in the Selected list on the right.

3. Click the up arrow on its icon until it sits at the very top of the stack.

4. Click Done to reload your resources and give the CRT screen effect top priority.

Checking External Shader Loader Conflicts

Because this pack is built to run directly in the base game as a vanilla shader pack, third-party shader mods such as Iris or OptiFine can interfere with how Minecraft handles built-in vanilla shaders.

1. Check whether you placed the pack in the shaderpacks folder by mistake. Move it into the resourcepacks folder instead, as external shader menus will not load a vanilla resource shader properly.

2. If you have Iris or OptiFine installed alongside your mods, open Options > Video Settings > Shader Packs (or Shaders) and turn off any active external shader pack.

3. Set your base Graphics mode to *Fancy* or *Fabulous!* so the vanilla rendering pipeline stays active and draws the classic monitor look properly.