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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] LSPCon and DisplayPort always output limited range RGB, even when it should output full range RGB"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100023#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] LSPCon and DisplayPort always output limited range RGB, even when it should output full range RGB"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100023">bug 100023</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>Please install some recent kernel, add drm.debug=14 module parameter, reproduce
the problem, and attach dmesg to the bug.
Please ensure you have CONFIG_DRM_DP_AUX_CHARDEV=y, and do:
# dd if=/dev/drm_dp_aux0 > dpcd
Attach the result to the bug. If dd fails, please try ddrescue instead.</pre>
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