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I just started learning Blender. According to the lesson, I began to try to adjust the materials for the default cube. When applying such nodes as noise texture and colorramp, I connected from the alpha output to the Material Output's Displacement input. I found out that, the cube changed color to magenta, and the tutorial shows how to apply a noise texture, i.e. change it. Please tell me what could be the matter, why is this happening to me?Screenshot showing material and magenta monkey

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    $\begingroup$ Would you please be so kind as to direct the title of the question to the topic? The title "Help me please!" does not help anyone to see what this is about, so it is unlikely that anyone will help you. Thank you! $\endgroup$
    – quellenform
    Jul 11, 2022 at 12:32
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    $\begingroup$ Displacement is essentially a Vertex Shader and is used with B&W images through a Displacement Node in order to provide a "heightmap" so to speak for the displacement of vertices. You should not have your alpha (or any alpha for that matter) connected to displacement. Also - magenta is blender's color for "cannot find texture", so that's a clue somethings amiss. $\endgroup$ Jul 11, 2022 at 13:35
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    $\begingroup$ Hi Please use a title that reflects the content of the question. It should be descriptive but succinct, unique and identifying, summarizing the issue so that users can at a glance understand what your post is about. Use the edit link below your post and avoid anything not strictly essential to the post. Remember, your title is the first thing potential visitors will see, and makes your question findable for future users. See "What is the problem with posting an image or link and asking “How do I do this?"" $\endgroup$ Jul 11, 2022 at 16:23

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I suggest starting the tutorial again and take your time to find out what you did wrong before.

Try disconnecting the Alpha value from Displacement to see if the gradient is visible.

Second, the displacement should be only visible in Cycles Render, so try to switch to Rendered View.

enter image description here

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