[ltp] Re: X31 backlight [was: No power source after hibernation]

[Henrik Brix Andersen]

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On Sat, 2004-11-27 at 19:33 +0100, Johannes Wolter wrote:
> I got the radeontool and it works for switching the backlight off. But wh=
en=20
> I'm switching to suspend state (S3 =3D suspend to RAM) the backlight turn=
s on=20
> again. I tried it with kernel 2.6.8 and with kernel 2.6.9 (including acpi=
 &=20
> swsusp2 patches).

In order for it to work correctly you need to
a) switch to a non-X11 virtual console
b) turn off the LCD using radeontool
c) activate suspend-to-ram

The following works for me:

        VT=3D`fgconsole`
        chvt 1
        radeontool light off
        echo -n mem > /sys/power/state
        radeontool light on
        chvt $VT

You might want to check out my custom X31 ACPI event handler for
inspiration: http://dev.gentoo.org/~brix/files/x31.sh

Sincerely,
./Brix
--=20
Henrik Brix Andersen <brix@gentoo.org>
Gentoo Linux

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