<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - 4K @ 60Hz over HDMI 2.0 not working with AMDGPU-DAL" href="https://bugs.freedesktop.org/show_bug.cgi?id=98333#c18">Comment # 18</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - 4K @ 60Hz over HDMI 2.0 not working with AMDGPU-DAL" href="https://bugs.freedesktop.org/show_bug.cgi?id=98333">bug 98333</a> from <a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> Alex Deucher</a> <pre>If the modes are only in the CEA extension block then this is a core drm issue. The core EDID parser does not handles all of the CEA 4K modes yet. Patches were proposed by several people, but I don't think any of them have gone upstream yet due to various objections and bikeshedding. See: <a href="https://lists.freedesktop.org/archives/dri-devel/2016-May/107463.html">https://lists.freedesktop.org/archives/dri-devel/2016-May/107463.html</a> <a href="https://lists.freedesktop.org/archives/dri-devel/2016-October/121434.html">https://lists.freedesktop.org/archives/dri-devel/2016-October/121434.html</a> <a href="https://lists.freedesktop.org/archives/dri-devel/2016-November/122631.html">https://lists.freedesktop.org/archives/dri-devel/2016-November/122631.html</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>