[Bug 67321] [dpm] rs880: Power usage doesn't drop with dpm=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67321

Alex Deucher <agd5f at yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement

--- Comment #1 from Alex Deucher <agd5f at yahoo.com> ---
Please(In reply to comment #0)
> My laptop (Lenovo Edge 11) has the Mobility Radeon HD 4200 Series chip
> (RS880M) 
> (windows says it's a HD 4225)
> 
> It consume with fglrx ~16W. (kernel 3.4.47)
> With radeon (kernel 3.11-rc2) and power_profile=low ~20W
> With radeon.dpm=1 (kernel 3.11-rc2) ~20W

The power usage between DPM and profile=low should be pretty comparable on
these chips.  DPM just has the advantage of being able to dynamically change
the clocks and voltage transparently when performance is required vs. having to
change it manually with the profile code.

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