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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Backlight does not increase to maximum on Lenovo Yoga 2 Pro"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75085#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - Backlight does not increase to maximum on Lenovo Yoga 2 Pro"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75085">bug 75085</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=75085#c5">comment #5</a>)
<span class="quote">> At any rate, that the ACPI firmware fails to set the maximum brightness is
> an issue in Lenovo's implementation.</span >
It's debatable whether ACPI firmware is wrong in limiting the brightness (both
the maximum and the minimum non-off brightness), or our native backlight
interface is wrong in *not* limiting the brightness according to the ACPI
opregion.
Some backlights might not like having 100% duty cycle, they might exhibit
non-linear increase in power consumption, might have an impact on the longevity
of the backlight, etc.</pre>
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