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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 - RX480 + SME = amdgpu init failed + null dereference"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104437">104437</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>RX480 + SME = amdgpu init failed + null dereference
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>DRI git
</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>
</tr>
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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>
</tr>
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<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>ace@sannes.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=136470" name="attach_136470" title="dmesg when not working">attachment 136470</a> <a href="attachment.cgi?id=136470&action=edit" title="dmesg when not working">[details]</a></span>
dmesg when not working
When upgrading from linux 4.13.x -> 4.14.x the amdgpu failed to come up, often
hanging my desktop computer.
Ending the amdgpg bring up with:
[drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 0 test failed
(scratch(0xC040)=0xCAFEDEAD)
[drm:amdgpu_device_init [amdgpu]] *ERROR* hw_init of IP block <gfx_v8_0> failed
-22
amdgpu 0000:0a:00.0: amdgpu_init failed
After getting some help in #radeon we figured out that the culprit was that I
had enabled SME (which the CPU Ryzen X1800 support).
Got the same error on 4.15-rc6, but with additional null dereference in DC
code.</pre>
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