How to know what GPU is on use and how to change?

Support Graphics & Display
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That’s a different package, you can get optimus-manager by running the following command in your terminal:

sudo pacman -S optimus-manager

You have to install both, optimus-manager and optimus-manager-qt from the AUR.

How to get it from the AUR

Method 1 (GUI):

1. Enable the AUR in pamac

1. Open pamac and navigate to the preferences menu.
2. Under the “Third Party” tab, Enable AUR support.

  1. Search for optimus-manager and optimus-manager-qt and install them

Method 2 (terminal), run these commands in your terminal:

1- Install ‘yay’, an AUR helper:

sudo pacman -S yay

2- Install optimus-manager-qt from the AUR:

yay -S optimus-manager optimus-manager-qt

For a better guide, I found this in the archived forum.

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