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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - RX470 doesn't reclock memory if a second display has been plugged in at some point"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98004">98004</a>
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<th>Summary</th>
<td>RX470 doesn't reclock memory if a second display has been plugged in at some point
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>minor
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>jonathanmoerman@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>If a second display has been plugged in the memory clock gets stuck at the
highest frequency, even if the display is disabled (using xrandr) or unplugged
again.
How to reproduce: plug in a second display and either disable it or unplug it
again, the memory will continue to be clocked at its maximal frequency (Here:
1750Mhz).
Kernels used for testing: Linux 4.4 (amdgpu-pro kernel driver), 4.7, 4.8rc5
The hardware is perfectly capable of clocking back to its lowest frequency if
only one display is actually enabled. (It works as expected in Windows)
This issue doesn't cause any problems other than using more watts than
necessary.
I'm not currently using the system with the RX470 GPU, I'll upload a dmesg log
in a few minutes.
I'm sorry if this isn't the correct place to post this bug, I'm new here.</pre>
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</p>
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