<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - I7-8700 onboard HDMI port does not support 4K resolution" href="https://bugs.freedesktop.org/show_bug.cgi?id=112018#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - I7-8700 onboard HDMI port does not support 4K resolution" href="https://bugs.freedesktop.org/show_bug.cgi?id=112018">bug 112018</a> from <a class="email" href="mailto:jian-hong@endlessm.com" title="jian-hong@endlessm.com">jian-hong@endlessm.com</a> <pre>Created <a href="attachment.cgi?id=145759" name="attach_145759" title="dump of /sys/kernel/debug/dri/0/i915_vbt">attachment 145759</a> <a href="attachment.cgi?id=145759&action=edit" title="dump of /sys/kernel/debug/dri/0/i915_vbt">[details]</a> dump of /sys/kernel/debug/dri/0/i915_vbt (In reply to Ville Syrjala from <a href="show_bug.cgi?id=112018#c4">comment #4</a>) > Created <a href="attachment.cgi?id=145756" name="attach_145756" title="script to dump the dual mode adapter registers">attachment 145756</a> <a href="attachment.cgi?id=145756&action=edit" title="script to dump the dual mode adapter registers">[details]</a> > script to dump the dual mode adapter registers > > Pleas install i2c-tools and run this like so: > dual_mode_dump HDMI-A-1 > > so that we can see the raw adapter registers. Tnaks for your reply! Here is the dual_mode_dump of HDMI-A-1 Probing /sys/class/drm/card0-HDMI-A-1/i2c-1 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-1, address 0x40, mode i2c block Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 44 50 2d 48 44 4d 49 20 41 44 41 50 54 4f 52 04 DP-HDMI ADAPTOR? 10: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 20: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 40: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 50: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 60: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ > Also please attach a dump of > /sys/kernel/debug/dri/0/i915_vbt The dump is as the attachment.</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>