Re: [PATCH v2] drm/i915: Respect the brightness range from VBT.

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On Tue, Nov 10, 2015 at 02:57:39PM +0200, Jani Nikula wrote:
> On Tue, 10 Nov 2015, "Shih-Yuan Lee (FourDollars)" <sylee@xxxxxxxxxxxxx> wrote:
> > Apparently you are not aware of GNOME has used 1 as the minimum brightness
> > level because of 
> >
> > commit e6755fb78e8f20ecadf2a4080084121336624ad9
> > Author: Jani Nikula <jani.nikula@xxxxxxxxx>
> > Date:   Tue Aug 12 17:11:42 2014 +0300
> >
> >     drm/i915: switch off backlight for backlight class 0 brightness
> >
> > Please check https://bugzilla.gnome.org/show_bug.cgi?id=744278.
> 
> Thanks for the reference, good to know. A certain other userspace
> explicitly wants "0 is off" behaviour. *sigh*.
I understand. Really.

So this behavior is intended, right?

Can I ask what kind of userspace can force Intel changing the driver's
behavior?

http://lists.freedesktop.org/archives/intel-gfx/2014-August/051258.html
looks like no test at all, and it just sacrificed the lowest brightness
level to fullfill the requirement from no where.

Regards,
$4
> 
> BR,
> Jani.
> 
> 
> -- 
> Jani Nikula, Intel Open Source Technology Center
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