Intel i915 support for RC6

[Kevin Oberman]

On Fri, Feb 6, 2015 at 12:37 PM, Jan Kokemüller <jan.kokemueller at gmail.com>
wrote:

> > Is '7' reasonable and, if so, what do the other two bits do?
>
> The value of the sysctl is interpreted as a bitmask. There are three
> different RC6 levels: RC6, RC6p and RC6pp. RC6pp is the deepest one with
> the largest power savings.
> Setting it to 7 enables all modes. dmesg then says:
>
> "info: [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp on"
>
> I would set it to 7 unless it makes the system unstable. RC6p seems to be
> broken on Sandy Bridge but it is automatically disabled there.
>

Thanks, Jan. I'll give it a try next boot.
--
Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman at gmail.com