<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#c16">Comment # 16</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:ykku16dev2@gmail.com" title="Yu Kang Ku <ykku16dev2@gmail.com>"> Yu Kang Ku</a> <pre>(In reply to <a href="show_bug.cgi?id=97965#c11">comment #11</a>, part 2) I experimented with latencies by changing the values defined inside vlv_setup_wm_latency(). Here's my patch (which also includes your DDL=0 change): <a href="https://bugs.freedesktop.org/attachment.cgi?id=127012">https://bugs.freedesktop.org/attachment.cgi?id=127012</a> In this patch, I bumped up all of the values to 45us so that the watermarks are very close to the maximum. In theory, we should be pretty busy trying to keep the FIFO close to being full. Yet, I was still able to reproduce the problem. The output of intel_watermark for this experiment is here: <a href="https://bugs.freedesktop.org/attachment.cgi?id=127013">https://bugs.freedesktop.org/attachment.cgi?id=127013</a></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>