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<body><span class="vcard"><a class="email" href="mailto:agd5f@yahoo.com" title="Alex Deucher <agd5f@yahoo.com>"> <span class="fn">Alex Deucher</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [dpm] rs880: Power usage doesn't drop with dpm=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67321">bug 67321</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Severity</td>
<td>normal
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<td>enhancement
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [dpm] rs880: Power usage doesn't drop with dpm=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67321#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [dpm] rs880: Power usage doesn't drop with dpm=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67321">bug 67321</a>
from <span class="vcard"><a class="email" href="mailto:agd5f@yahoo.com" title="Alex Deucher <agd5f@yahoo.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>Please(In reply to <a href="show_bug.cgi?id=67321#c0">comment #0</a>)
<span class="quote">> 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</span >
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.</pre>
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