Better or advised configuration approach for Optimus based systems

Josh Boyer jwboyer at
Tue Nov 22 16:18:01 UTC 2011

On Tue, Nov 22, 2011 at 10:54 AM, Adam Williamson <awilliam at> wrote:
> On Tue, 2011-11-22 at 13:29 +0100, Gianluca Cecchi wrote:
>> What about i915_enable_rc6 not being the default...? Does still put
>> stability problems? Does it make sense to enable it or not by default
>> based on different adapters/chipsets?
>> In my case it gives me about 1hour and a half of battery life more....
> modinfo asserts:
> parm:           i915_enable_rc6:Enable power-saving render C-state 6
> (default: true) (int)
> are you sure it's *not* the default?

Yes.  Modinfo is lying to you.


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