<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - MegaChips MCDP2800 LSPCON and ASRock Fatal1ty Z170 Gaming-ITX/ac issues (Broadcast RGB, HDMI output, triple monitor not working)" href="https://bugs.freedesktop.org/show_bug.cgi?id=94248#c79">Comment # 79</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - MegaChips MCDP2800 LSPCON and ASRock Fatal1ty Z170 Gaming-ITX/ac issues (Broadcast RGB, HDMI output, triple monitor not working)" href="https://bugs.freedesktop.org/show_bug.cgi?id=94248">bug 94248</a> from <a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> Jani Nikula</a> <pre>(In reply to nw9165-3201 from <a href="show_bug.cgi?id=94248#c78">comment #78</a>) > 1. Using the HDMI port to the left side of the DisplayPort port (which is > the HDMI port that is being powered by the MegaChips MCDP2800 LSPCON), > Broadcast RGB suddenly is automatically being set to Limited 16:235, even > though it's connected to a DVI-D PC monitor via a passive HDMI to DVI-D > cable. This is not the case with Kernel 4.4 from Ubuntu Xenial. With Kernel > 4.4 from Ubuntu Xenial, it's properly being set to Broadcast RGB Full. So, > this seems to be a regression between Kernel 4.4 and Kernel 4.8. The CEA-861-E spec says we must default to limited color range for CEA modes with bpp other than 18. We've probably changed this between 4.4 and 4.8, I don't remember exactly. Whichever we default to will be correct for some people, and wrong for some others. Thus the neutral option is to go by the spec.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>