Quoting the workaround database: "FBC can show stale data when using 180 degree hardware rotation of the primary display plane. WA: Do not enable FBC when using hardware 180 degree rotation on the primary display plane." References: https://bugs.freedesktop.org/show_bug.cgi?id=86548 Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f5ce91e..350053f 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -626,7 +626,8 @@ void intel_update_fbc(struct drm_device *dev) DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n"); goto out_disable; } - if (INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) && + if (((INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev)) || + IS_HASWELL(dev)) && to_intel_plane(crtc->primary)->rotation != BIT(DRM_ROTATE_0)) { if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE)) DRM_DEBUG_KMS("Rotation unsupported, disabling\n"); -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
