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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - polaris powerplay init fails: There must be 1 or more PCIE levels defined in PPTable"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107518">107518</a>
</td>
</tr>
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<th>Summary</th>
<td>polaris powerplay init fails: There must be 1 or more PCIE levels defined in PPTable
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PowerPC
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>shawnanastasio@yahoo.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141002" name="attach_141002" title="dmesg for 4.17.11-200">attachment 141002</a> <a href="attachment.cgi?id=141002&action=edit" title="dmesg for 4.17.11-200">[details]</a></span>
dmesg for 4.17.11-200
When booting kernel 4.17 or 4.18-rc8+ (git) on a POWER9 system with an ASUS Rx
580 GPU, the following messages are printed to the kernel log:
[ 10.398837] amdgpu: [powerplay] There must be 1 or more PCIE levels defined
in PPTable.
[ 10.398839] amdgpu: [powerplay] Failed to populate SCLK during
PopulateNewDPMClocksStates Function!
[ 10.398840] amdgpu: [powerplay] Failed to populate and upload SCLK MCLK DPM
levels!
Note that the system is booted with the kernel argument `amdgpu.dc=0` to work
around this issue: <a class="bz_bug_link
bz_status_NEW "
title="NEW - monitor not found in 4.17+ kernel"
href="show_bug.cgi?id=107049">https://bugs.freedesktop.org/show_bug.cgi?id=107049</a>
GPU performance seems to be significantly hindered as a result of these errors.
Booting with `amdgpu.dpm=0` silences the errors but does not improve
performance.</pre>
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