Better or advised configuration approach for Optimus based systems

[Josh Boyer]

On Tue, Nov 22, 2011 at 12:10 PM, Gianluca Cecchi
<gianluca.cecchi at gmail.com> wrote:
> On Tue Nov 22 16:18:01 UTC 2011 Josh Boyer wrote:
>>>On Tue, Nov 22, 2011 at 10:54 AM, Adam Williamson wrote:
>>> 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.
>>
>> josh
>
> I last tried with 3.1.0 kernel where, using systool command without
> passing any options to kernel command line I got:
>
> $ sudo systool -v -m i915
> ...
>    i915_enable_rc6     = "0"
> ...
>
> So I put the kernel command line option getting now
>    i915_enable_rc6     = "1"
>
> But I can try again with current 3.1.1-2.fc16.x86_64 if something changed...

Nothing has changed.  It still defaults to off.  I was telling Adam
that modinfo was incorrectly saying it defaults to on.

josh