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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - high idle power consumption"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108379">108379</a>
</td>
</tr>
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<th>Summary</th>
<td>high idle power consumption
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>grmat@sub.red
</td>
</tr></table>
<p>
<div>
<pre>system:
- Polaris10 (Ellesmere)
- Linux 4.18.14
- WQHD (2560*1440 pixels) monitor with 144 Hz (DisplayPort)
expected behaviour:
GPU power states should be lowered to the minimum states while idling to save
power, heat and noise.
actual behaviour:
- DC on (default):
GPU stuck at highest SCLK DPM state, power consumption as per amdgpu_pm_info
is ~24 Watts
- amdgpu.dc=0:
MCLK stuck at high DPM state, power consumption as per amdgpu_pm_info is ~26
Watts
- Windows:
correct (lowest) SCLK/MCLK DPM states, measured power consumption is ~16
Watts lower compared to Linux
Note: <a href="https://bugzilla.kernel.org/show_bug.cgi?id=201275">https://bugzilla.kernel.org/show_bug.cgi?id=201275</a> fixed a regression
causing *additional* power draw (SCLK and MCLK both at max, power consumption
at ~38 Watts while idling).
I can't tell if it's a regression as I've just recently got the GPU. Randomly
tested kernels from within 4.17 to 4.18.14 all suffer from this issue.</pre>
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