<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [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#c42">Comment # 42</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [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 Ville Syrjala from <a href="show_bug.cgi?id=97965#c39">comment #39</a>) > (In reply to Yu Kang Ku from <a href="show_bug.cgi?id=97965#c38">comment #38</a>) > > (In reply to Ville Syrjala from <a href="show_bug.cgi?id=97965#c37">comment #37</a>) > > > Can we repeat the failure with, say, only pipe B active + DDR DVFS disabled > > > + PM5 disabled + cxsr/maxfifo disabled + trickle feed enabled? I was finally able to simulate "closing the lid" on the BSW RVP and carry out the experiment you requested. Unfortunately, the problem is still reproducible. The output of intel_watermark is here: <a href="https://bugs.freedesktop.org/attachment.cgi?id=127636">https://bugs.freedesktop.org/attachment.cgi?id=127636</a> The output of intel_reg dump --all is here: <a href="https://bugs.freedesktop.org/attachment.cgi?id=127637">https://bugs.freedesktop.org/attachment.cgi?id=127637</a> These outputs show that the conditions you specified have been met. The following are the code changes I made to meet the conditions that you specified: diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 5d39ad2..35766b7 100644 --- 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; @@ -1288,7 +1288,7 @@ static void vlv_merge_wm(struct drm_device *dev, int num_active_crtcs = 0; wm->level = to_i915(dev)->wm.max_level; - wm->cxsr = true; + wm->cxsr = false; for_each_intel_crtc(dev, crtc) { const struct vlv_wm_state *wm_state = &crtc->wm_state; diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 6c11168..10d6eac 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1070,7 +1070,7 @@ static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) /* * Disable trickle feed and enable pnd deadline calculation */ - I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); + I915_WRITE(MI_ARB_VLV, 0); I915_WRITE(CBR1_VLV, 0); WARN_ON(dev_priv->rawclk_freq == 0);</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> </ul> </body> </html>