xbacklight on intel

Khashayar Naderehvandi khashayar.lists at gmail.com
Sat Mar 1 05:31:45 PST 2008

Woops, forgot to add the mailing list, and attach the patch. Sending again.

On Sat, Mar 1, 2008 at 12:06 PM, Khashayar Naderehvandi <
khashayar.lists at gmail.com> wrote:

> >
> > Yeah, please file a bug.  In the meantime, you can
> > add '/sys/class/backlight/fujitsu' to the list of backlight directories
> > in i830_lvds.c then rebuild your driver to make sure it'll work for
> > you.
> Here's that bug: https://bugs.freedesktop.org/show_bug.cgi?id=14706.
> And I've attached the tiny patch against the intel driver that fixes this
> for me.
> However, there is one little issue left. If I change the backlight using
> the hardware controlled function keys, xbacklight -get still returns what it
> had set itself previously. This seems to be because
> /sys/class/backlight/fujitsu-laptop contains one file called 'brightness'
> and one called 'actual_brightness'. 'actual_brightness' is read-only, and
> echoing a number to 'brightness' changes the backlight brightness as well as
> 'actual_brightness' properly. However, when changing the backlight through
> the function keys, only actual_brightness changes.
> Thinking of it, this might be a bug of the fujitsu-laptop kernel module...
> not sure.
> Regards,
> K.
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