<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BSW] External HDMI monitor suddenly shows solid color when playing Youtube video at 1080p [fifo underrun]" href="https://bugs.freedesktop.org/show_bug.cgi?id=97965#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BSW] External HDMI monitor suddenly shows solid color when playing Youtube video at 1080p [fifo underrun]" href="https://bugs.freedesktop.org/show_bug.cgi?id=97965">bug 97965</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>Created <a href="attachment.cgi?id=126993" name="attach_126993" title="[PATCH] drm/i915: Set DDL to 0">attachment 126993</a> <a href="attachment.cgi?id=126993&action=edit" title="[PATCH] drm/i915: Set DDL to 0">[details]</a> <a href='page.cgi?id=splinter.html&bug=97965&attachment=126993'>[review]</a> [PATCH] drm/i915: Set DDL to 0 I guess we could try to tighten the display engine's deadlines a bit. This should force the deadline to be 0 always, so in theory the system agent shouldn't be allowed to delay things at all. If that doesn't help, you could also try to play around with the memory latency values. Based on your logs I think you'd have to go up to 15 usec to make any change to the watermarks. So something like this: echo '15 0 0' > /sys/kernel/debug/dri/0/i915_pri_wm_latency and then force a modeset on all pipes (eg. xset dpms force off; xset dpms force on).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>