56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
From 0502ecec1ea91a205a0e7208334001f30664b526 Mon Sep 17 00:00:00 2001
|
|
From: Fedora Kernel Team <kernel-team@fedoraproject.org>
|
|
Date: Mon, 20 Jun 2016 14:52:10 +0200
|
|
Subject: [PATCH] i915/fbc: Disable on HSW by default for now
|
|
|
|
Upstream: posted on dri-devel (and r-b'd)
|
|
|
|
Author: cpaul@redhat.com <cpaul@redhat.com>
|
|
AuthorDate: Thu Jun 9 11:58:15 2016 -0400
|
|
Commit: Rob Clark <rclark@redhat.com>
|
|
CommitDate: Thu Jun 9 15:43:07 2016 -0400
|
|
|
|
i915/fbc: Disable on HSW by default for now
|
|
|
|
>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@redhat.com>
|
|
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
|
|
Cc: stable@vger.kernel.org
|
|
---
|
|
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 d5a7cfe..647127f 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";
|
|
--
|
|
2.7.4
|
|
|