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drm/i915: Try enabling RC6 by default (again)

Jesse Barnes and I found a couple of issues where incorrect mode
setting would cause problems with RC6 enabled. We're hopeful that
fixing those will resolve the outstanding issues with a few machines
that had trouble before 3.0 with rc6.

Cc: Pekka Enberg <>
Cc: Francesco Allertsen <>
Cc: Ted Phelps <>
Cc: Gu Rui <>
Signed-off-by: Keith Packard <>
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1 parent 3d208be commit 4e20fa65a3ea789510eed1a15deb9e8aab2b8202 @keith-packard keith-packard committed Aug 3, 2011
Showing with 1 addition and 1 deletion.
  1. +1 −1 drivers/gpu/drm/i915/i915_drv.c
@@ -62,7 +62,7 @@ module_param_named(semaphores, i915_semaphores, int, 0600);
"Use semaphores for inter-ring sync (default: false)");
-unsigned int i915_enable_rc6 __read_mostly = 0;
+unsigned int i915_enable_rc6 __read_mostly = 1;
module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0600);
"Enable power-saving render C-state 6 (default: true)");

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