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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 - Manual setting of pp_dpm_sclk resets after monitor off/on (rx 480)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107141">107141</a>
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<th>Summary</th>
<td>Manual setting of pp_dpm_sclk resets after monitor off/on (rx 480)
</td>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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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>
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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>DRM/AMDgpu
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>krystian.zajdel@gmail.com
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=140483" name="attach_140483" title="dmesg">attachment 140483</a> <a href="attachment.cgi?id=140483&action=edit" title="dmesg">[details]</a></span>
dmesg
Manual setting of pp_dpm_sclk resets after monitor off/on.
1.setting:
echo manual > /sys/class/drm/card0/device/power_dpm_force_performance_level
echo 2 > /sys/class/drm/card0/device/pp_dpm_sclk
echo 95 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
2. checking:
cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 300Mhz
1: 608Mhz
2: 910Mhz *
3: 1077Mhz
4: 1145Mhz
5: 1191Mhz
6: 1236Mhz
7: 1303Mhz
cat /sys/class/drm/card0/device/power_dpm_force_performance_level
manual
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
91
3. switching monitor off/on
4. checking again:
cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 300Mhz
1: 608Mhz
2: 910Mhz
3: 1077Mhz
4: 1145Mhz
5: 1191Mhz
6: 1236Mhz
7: 1303Mhz *
cat /sys/class/drm/card0/device/power_dpm_force_performance_level
manual
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
91
The card is under opencl load (blender) but the problem exists regardless of
the load.
So, the dpm_performance_level still says manual but the clock is changed to
auto again.
GPU: rx480 (MSI) connected via DisplayPort (I didn't try HDMI)
OS: Slackware current
Affected kernels (that I've tried): 4.17.1, 4.17.2, 4.17.3, 4.18rc3,
4.18.0-rc1-custom-g6becad35ec8a-dirty
Kernels that work properly (the ones I've tried): 4.16.14, 4.16.15, 4.16.17.
It's my first bug report so I apologize in advance for any mistakes.</pre>
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