<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - "pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111584">111584</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>"pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jonasdcdm@mailbox.org
</td>
</tr></table>
<p>
<div>
<pre>I have recently tried to overclock/undervolt my GPU (R9 390) within Linux
thanks to the "amdgpu.ppfeaturemask=0xffffffff" boot parameter, but
unfortunately the file "pp_od_clk_voltage" is not available after a reboot.
Files "pp_dpm_mclk" and "pp_dpm_sclk" however show correct states and MHz,
except that they don't show voltage information. Changing
"power_dpm_force_performance_level" to manual allows me to make changes to
these files, I can force a state to be used and overclock it, but voltages
aren't showed and can't be modified.
I have read that Southern Island GPUs were not expected to get this feature
working, and I know Vega is compatible, but I can't find anywhere if Hawaii
(CIK) hardware should be able to expose this feature. I might be missing
something.
Is there any way to undervolt my GPU under Linux at the moment?
Specs:
OS: Arch Linux
Kernel: 5.2.11.arch1-1
Mesa: 19.1.6-1
Xorg: 1.20.5-2
Boot parameters: radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.dpm=1
amdgpu.dc=1 amdgpu.ppfeaturemask=0xffffffff
GPU: [AMD/ATI] Hawaii PRO [Radeon R9 290/390] (rev 80)
Feel free to ask for more details and output if needed.
Thank you for your time.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>