>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. Signed-off-by: Lyude <cpaul@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/gpu/drm/i915/intel_fbc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index 0f0492f..28f4407 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -823,8 +823,7 @@ 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"; -- 2.5.5 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
