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drm/i915:: Disable FBC on SandyBridge 

Enabling FBC is causing the BLT ring to run between 10-100x slower than
normal and frequently lockup. The interim solution is disable FBC once
more until we know why.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Chris Wilson 2011-11-08 23:17:34 +00:00 committed by Keith Packard
parent acb42a3b61
commit d56d8b28e9
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_display.c
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@ -1872,7 +1872,7 @@ static void intel_update_fbc(struct drm_device *dev)
if (enable_fbc < 0) {
DRM_DEBUG_KMS("fbc set to per-chip default\n");
enable_fbc = 1;
if (INTEL_INFO(dev)->gen <= 5)
if (INTEL_INFO(dev)->gen <= 6)
enable_fbc = 0;
}
if (!enable_fbc) {