<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#c26">Comment # 26</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>Created <a href="attachment.cgi?id=127126" name="attach_127126" title="Output of intel_watermark with PM2 limit">attachment 127126</a> <a href="attachment.cgi?id=127126&action=edit" title="Output of intel_watermark with PM2 limit">[details]</a> Output of intel_watermark with PM2 limit (In reply to Ville Syrjala from <a href="show_bug.cgi?id=97965#c25">comment #25</a>) > That's not a bit too different since it's gone and enabled PM5 and DDR DVFS. > So you should limit it to PM2 to make sure we're doing apples to apples > comparison. > Eg.: > --- a/drivers/gpu/drm/i915/intel_pm.c > +++ b/drivers/gpu/drm/i915/intel_pm.c > @@ -946,7 +946,7 @@ static void vlv_setup_wm_latency(struct drm_device *dev) > > dev_priv->wm.max_level = VLV_WM_LEVEL_PM2; > > - if (IS_CHERRYVIEW(dev_priv)) { > + if (0 && IS_CHERRYVIEW(dev_priv)) { > dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12; > dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33; > > I applied this change and repeated the dock-mode experiment. The problem is still reproducible. Attached is the output of intel_watermark showing that your change took effect.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>