Gentoo : Xorg X Server 3D hardware acceleration

You need to have read/write permissions to /dev/dri/cardX to benefit from 3D hardware acceleration in Xorg X Server. On a Gentoo linux machine, this file has the following permissions set by default :

ls -l /dev/dri/card0 
crw-rw---- 1 root video 226, 0 2009-10-14 16:12 /dev/dri/card0

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HAL + Xorg X server : Using HAL to set hardware specific configurations for Xorg Xserver

The Xorg X Server can now rely on HAL to get information about the hardware the machine is running. This allows the X Server to auto-configure most of its components such as keyboard / mouse / screen / graphic adapter. But there is still room for tweaking it if needed.

This post explains how to configure extra properties for a keyboard at the HAL level, so that X Server will correctly auto-configure it for you.

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