Why is DirectFB not more widely used in GNU/Linux? Are there crippling limitations to it that don't exist in X11?

Question

As far as I understand, DirectFB offers hardware acceleration for many kinds of graphics cards. Additionally, it\'s smaller, faster, and uses up less memory than X11. Why then,

Answer 1

DirectFB was designed for embedded systems, which have small memory footprint. It allows applications to talk directly to video hardware through a direct API, speeding up and simplifying graphic operations.

It is often used by games and embedded systems developers to circumvent the overhead of a full X Window System server implementation.

http://elinux.org/DirectFB