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Linux-libre
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GNU Linux-libre is a modified Linux created by the FSF Latin America. It removes all non-free components and binary blobs of Linux. It officially joined the GNU project in early 2012. There are binary releases distributed by FSF Latin America, but GNU Linux-Libre is really just a set of deblob scripts.
Due to proprietary drivers being removed from GNU Linux-Libre, hardware compatibility may vary based on free drivers being available for the hardware you use. The Free Software Foundation maintains H-Node, a database of hardware compatibility tests and their results. The H-Node database is useful for determining the compatibility of your hardware with GNU Linux-Libre and also to find compatible hardware.
Usage by distros
By default, Most (if not all) FSF-endorsed distros have GNU Linux-libre as their default kernel. However, some distros such as Arch Linux has GNU Linux-libre in the AUR. Gentoo has instruction in the wiki for using the deblob script. Debian, while not using GNU Linux-libre, has a deblobbed kernel by default, making it somewhat similar to GNU Linux-libre.
