0368920e51
It causes black screen on bootup and is approximately 100x slower than running with FBC disabled, so the GPU runs at a high frequency for much longer - completely contrary to the power saving claims. It also still has mutex deadlocks in multi-head scenarios, which can lead to a system/X lockup. These bugs were known before FBC was enabled by default on Haswell and still have not been fixed. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79716 Reported-and-tested-by: Jon Kristensen <info@jonkri.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org [Jani: update subject to reflect the actual change] Signed-off-by: Jani Nikula <jani.nikula@intel.com> |
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