<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 - llvmpipe consume all resources on GPU Vega RX (amdgpu driver) with mesa 17.2.4 if disabled IGPU"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103921">103921</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>llvmpipe consume all resources on GPU Vega RX (amdgpu driver) with mesa 17.2.4 if disabled IGPU
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>17.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Mesa core
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mikhail.v.gavrilov@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>How reproduce:
1. On Fedora 27 compile and install latest amdgpu driver from branch
amd-staging-drm-next by this instruction
<a href="https://fedoraproject.org/wiki/Building_a_custom_kernel">https://fedoraproject.org/wiki/Building_a_custom_kernel</a>
Or install mainline vanilla kernel from this repo
<a href="https://fedoraproject.org/wiki/Kernel_Vanilla_Repositories">https://fedoraproject.org/wiki/Kernel_Vanilla_Repositories</a>
If you don't make this step Vega RX would be runned under VESA driver which
don't have this issue.
2. By default Fedora 27 shipped with mesa 17.2.4, don't update it to 17.4 from
CORP repo.
3. Restart computer.
4. Goto BIOS and disable IGPU if it was enabled.
Expected result: llvmpipe should work with amdgpu same as with VESA driver
without consuming all CPU resources.
Interesting note:
If go in BIOS and enable Intel GPU graphics without without reconnecting
monitor to mother board (means monitor still connected to Radeon VEGA RX card)
then this issue is gone. Why? In this case still used llvmpipe and amdgpu
driver.
Demonstration: <a href="https://youtu.be/rFDeR8-_yMo">https://youtu.be/rFDeR8-_yMo</a></pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>