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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 - [NVA0] [Reclocking] GPU doesn't relax memory clocks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95044">95044</a>
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<th>Summary</th>
<td>[NVA0] [Reclocking] GPU doesn't relax memory clocks
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/nouveau
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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</tr>
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<th>Reporter</th>
<td>debianlinuxero1@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=123101" name="attach_123101" title="Kernel_log">attachment 123101</a> <a href="attachment.cgi?id=123101&action=edit" title="Kernel_log">[details]</a></span>
Kernel_log
The card doesn't relax memory clocks on step down reclock transitions.
For example, if I try [code]echo 07 > pstate[/code] from a 0f state, I see this
:
[code]
03: core 300 MHz shader 600 MHz memory 100 MHz
07: core 400 MHz shader 800 MHz memory 300 MHz AC DC *
0f: core 576 MHz shader 1242 MHz memory 999 MHz
AC: core 399 MHz shader 799 MHz memory 999 MHz
[/code]
The problem happens in the 3 step down possible transitions :
0f -> 07, 07 -> 03 and 0f -> 03.
The memory clock always stands as high as the major's state I set up.
The system is :
Phenom II X4 905e, 4 GB DDR3 @ 1333, nVidia GeForce GTX 260, 790FX chipset.
Debian GNU/Linux stretch (Testing) x64
Kernel 4.4.0-1, libdrm-nouveau2 2.4.67-1.
The attachment file shows a kernel dmesg after switching from state 0f to 07.</pre>
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