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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SKL] DPCD backlight causes black screen on ThinkPad X1 Carbon 4th Gen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101619#c17">Comment # 17</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SKL] DPCD backlight causes black screen on ThinkPad X1 Carbon 4th Gen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101619">bug 101619</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 David Weinehall from <a href="show_bug.cgi?id=101619#c15">comment #15</a>)
<span class="quote">> Unless I'm misinterpreting the eDP v1.4 spec, the AUX CH backlight support
> is for eDP v1.4 and later only.</span >
You're misinterpreting, but the spec makes it easy to do so. Looking at eDP
v1.3 specs is easier for checking what was available then than trying to
decipher that from eDP v1.4 spec.</pre>
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