[ltp] Command to dim the LCD brightness

Tino Keitel linux-thinkpad@linux-thinkpad.org
Wed, 12 Jan 2005 16:32:34 +0100


On Wed, Jan 12, 2005 at 09:09:48 +0100, Bob Alexander wrote:

[...]

> Alex,
> could you be more specific in how could I use ACPI to lower brightness 
> (not turn off) of my LCD ?? It must be possible since the Fn-Home and 
> Fn-End thinkpad keys do that ....

In battery power mode, this may work with tpctl. This tool can switch
between darker display and full brightness as in AC power mode when no AC
power is connected.

Maybe you can also use ibm-acpi, see the capter "CMOS control" and the
LCD brightness parameters in <http://ibm-acpi.sourceforge.net/README>.

Regards,
Tino