diff options
authorLyude <cpaul@redhat.com>2016-06-09 11:58:15 -0400
committerJani Nikula <jani.nikula@intel.com>2016-06-21 19:45:21 +0300
commit1e3fa0acfec677e915d7de5ac6e1f18cfa4f805b (patch)
parent34511dce4b35685d3988d5c8b100d11a068db5bd (diff)
drm/i915/fbc: Disable on HSW by default for nowdrm-intel-fixes-2016-06-22
>From https://bugs.freedesktop.org/show_bug.cgi?id=96461 : This was kind of a difficult bug to track down. If you're using a Haswell system running GNOME and you have fbc completely enabled and working, playing videos can result in video artifacts. Steps to reproduce: - Run GNOME - Ensure FBC is enabled and active - Download a movie, I used the ogg version of Big Buck Bunny for this - Run `gst-launch-1.0 filesrc location='some_movie.ogg' ! decodebin ! glimagesink` in a terminal - Watch for about over a minute, you'll see small horizontal lines go down the screen. For the time being, disable FBC for Haswell by default. Stefan Richter reported kernel freezes (no video artifacts) when fbc is on. (E3-1245 v3 with HD P4600; openbox and some KDE and LXDE applications, thread begins at https://lkml.org/lkml/2016/4/26/813). We also got reports from Steven Honeyman on openbox+roxterm. v2 (From Paulo): - Add extra information to the commit message - Add Fixes tag - Rebase Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96461 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96464 Fixes: a98ee79317b4 ("drm/i915/fbc: enable FBC by default on HSW and BDW") Cc: stable@vger.kernel.org Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Lyude <cpaul@redhat.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465487895-7401-1-git-send-email-cpaul@redhat.com (cherry picked from commit c7f7e2feffb0294302041507dfd5fc15f01afccc) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index d5a7cfec589b..647127f3aaff 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -824,8 +824,7 @@ static bool intel_fbc_can_choose(struct intel_crtc *crtc)
struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
struct intel_fbc *fbc = &dev_priv->fbc;
- bool enable_by_default = IS_HASWELL(dev_priv) ||
- IS_BROADWELL(dev_priv);
+ bool enable_by_default = IS_BROADWELL(dev_priv);
if (intel_vgpu_active(dev_priv->dev)) {
fbc->no_fbc_reason = "VGPU is active";

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