<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] no modes bigger than 1080p in the parsed EDID for 4k TV on both HDMI/VGA" href="https://bugs.freedesktop.org/show_bug.cgi?id=67030#c34">Comment # 34</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] no modes bigger than 1080p in the parsed EDID for 4k TV on both HDMI/VGA" href="https://bugs.freedesktop.org/show_bug.cgi?id=67030">bug 67030</a> from <a class="email" href="mailto:cancan.feng@intel.com" title="cancan,feng <cancan.feng@intel.com>"> cancan,feng</a> <pre>(In reply to <a href="show_bug.cgi?id=67030#c31">comment #31</a>) > Created <a href="attachment.cgi?id=83302" name="attach_83302" title="Parse 4k VICs">attachment 83302</a> <a href="attachment.cgi?id=83302&action=edit" title="Parse 4k VICs">[details]</a> <a href='page.cgi?id=splinter.html&bug=67030&attachment=83302'>[review]</a> [review] > Parse 4k VICs > > Could you try this kernel patch? it parses the HDMI CEA vendor specific > block to look for 4k modes. > > I noticed that X prunes those modes because their pixel clock is larger than > the other detailed modes. It'll have to be fixed at some point. > > (II) intel(0): Not using mode "3840x2160" (bad mode > clock/interlace/doublescan) > > You can however use libdrm's modeprint to check that the modes are exposed > by the kernel: > > $ ./modeprint i915 > Mode: "3840x2160" 3840x2160 30 > Mode: "3840x2160" 3840x2160 25 > Mode: "3840x2160" 3840x2160 24 > > I also left printks in this patch: > > $ dmesg | grep XXX > [ 4.901749] [drm:do_hdmi_vsdb_modes], XXX: Found 3 modes in the HDMI vsdb > [ 4.901751] [drm:do_hdmi_vsdb_modes], XXX: Found VIC 1 > [ 4.901753] [drm:do_hdmi_vsdb_modes], XXX: Found VIC 2 > [ 4.901755] [drm:do_hdmi_vsdb_modes], XXX: Found VIC 3 I tried this patch and I still can't see "3840x2160"..I attached the dmesg with this patch if this is useful for you.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>