[ltp] Workarounds and tips for thinkpads running 2.6.23/2.6.24

[Yves-Alexis Perez]

On Thu, Feb 07, 2008 at 12:40:11PM +0000, Henrique de Moraes Holschuh wrote:
> On Thu, 07 Feb 2008, Yves-Alexis Perez wrote:
> > btw, using xbacklight to control the brightness, I can notice that,
> > using ???kernel??? interface in xrandr (the default one here), I can set
> > brightness to some quite bright maximum, but can't shutdown the display.
> > Using ???native??? interface, I can shutdown the panel but the maximum
> > backlight is a lot less bright than in ???kernel???. I guess I should use
> 
> Report the backlight level thing to the X.org people, please. 

You mean opening a bug to the Debian BTS (or x.org buzilla)?

> As for turning off the backlight, ACPI cannot do it on thinkpads.  Neither
> through thinkpad-acpi, nor through ACPI video.  This is very, very unlikely
> to change.

Hmh, but why?
> 
> If you want to turn the backlight off, by all means use the X.org code and
> not the kernel.

If xorg can do it, why can't the kernel?
-- 
Yves-Alexis