utility to get/set registers and to control backlight on radeon based laptops


radeontool [option] [command]


This manual page documents briefly the radeontool command.

This manual page was written for the Debian distribution because the original program does not have a manual page.

radeontool is a program that switches on/off backlight and external output on ATI Radeon based laptops, and is able to list or set register values.


You can specify one of the following commands:
dac [on|off]

Power down the external video output

light [on|off]

Power down the backlight

stretch [on|off|vert|horiz|auto|manual]

Adjusts stretching for resolution mismatch


Show a listing of some random registers

regmatch [pattern]

Show registers matching wildcard pattern

regset [pattern] [value]

Set registers matching wildcard pattern


These programs follow the usual GNU command line syntax, with long options starting with two dashes (’-’). A summary of options is included below.


Show a little debug info


Skips the first n cards and acts on the n+1


This manual page was written by Luigi Gangitano for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.

On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

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