<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [SNB] Full/Limited Color range not working automatically for 1000/1001 CEA modes" href="https://bugs.freedesktop.org/show_bug.cgi?id=46800#c21">Comment # 21</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [SNB] Full/Limited Color range not working automatically for 1000/1001 CEA modes" href="https://bugs.freedesktop.org/show_bug.cgi?id=46800">bug 46800</a> from <a class="email" href="mailto:lauri.myllari@gmail.com" title="Lauri Mylläri <lauri.myllari@gmail.com>"> Lauri Mylläri</a> <pre>The quantization range signaling doesn't seem to be working on Haswell. I am outputting from a D54250WYK NUC to Pioneer KRP-500m (via Yamaha RX-A1000) and seeing grey blacks with the default limited RGB range. When I switch to full range using xrandr, picture is fine. I assume my monitor supports switching RGB range automatically as my bluray player is able to signal it (switch player output RGB range between full and limited, displayed black levels do not change; I can verify that the output range really changes by setting input range manually in the Pioneer). There are more people in the xbmc forum nuc thread (see for example starting at <a href="http://forum.xbmc.org/showthread.php?tid=176718&pid=1548847#pid1548847">http://forum.xbmc.org/showthread.php?tid=176718&pid=1548847#pid1548847</a>) reporting grey blacks with the default setting, so it's probably not just my system. Based on <a href="http://forum.xbmc.org/showthread.php?tid=176718&pid=1552262#pid1552262">http://forum.xbmc.org/showthread.php?tid=176718&pid=1552262#pid1552262</a> (and the few comments following), same issue may be present on earlier chipsets too. Unfortunately I don't have access to an HDMI analyzer. Is there any other way I could supply useful data? For best quality it would be nice to have full range output, but have the ability to signal limited range if desired. This would preserve blacker-than-black, whiter-than-white and avoid banding from luma range expansion.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>