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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 memory clock speed issue on R9 380"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107929">107929</a>
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<th>Summary</th>
<td>High memory clock speed issue on R9 380
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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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>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/AMDgpu
</td>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
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<th>Reporter</th>
<td>sergej.schmidt91@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141561" name="attach_141561" title="dmesg">attachment 141561</a> <a href="attachment.cgi?id=141561&action=edit" title="dmesg">[details]</a></span>
dmesg
My setup is Strix R9 380 and two monitors Samsung SyncMaster XL2370 und Asus
VS278. I use Ubuntu 18.04 on 4.15 Kernel and Windows 10 in Dual Boot. If i use
Ubuntu with two monitors, the memory clock raises to the maximum 1425mhz in
Idle.
I already know that there is an issue with dual monitor setup on AMD GPUs but i
tested it on Windows and there are no issues with these two monitors. When i
have Chrome open and browse the internet it is mostly 300 or 700mhz. I just
have to set both monitors to exactly 60 hertz.
1. On Linux i checked and set the monitors to 60 hertz.
2. I have tried the 4.18.7 and 4.19rc3 Kernel.
3. Installed the driver from AMD website.
4. I saw some commands for manual select of clock speed. ->Works only for GPU
frequency.
echo manual > /sys/class/drm/card0/device/power_dpm_force_performance_level
echo 1 > /sys/class/drm/card0/device/pp_dpm_mclk
5. amdgpu.dc=1 amdgpu.dpm=1
None of these works.</pre>
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