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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - GPU Hang with single-channel RAM configuration"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105064">105064</a>
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<th>Summary</th>
<td>GPU Hang with single-channel RAM configuration
</td>
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<th>Product</th>
<td>DRI
</td>
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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)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>mark.a.janes@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Mesa CI consistently reproduced GPU hangs on a subset of BDWGT3e machines after
updating kernel from 4.9->4.15.
On further investigation, we found that all failing machines had RAM in
single-channel configuration: 4GB in each of slots A1, A2. This is a valid
(though uncommon) memory configuration.
We have not yet verified if other more common memory configurations (3 slots, 4
slots filled) reproduce the hang.
So far, this is reproducible as far back as 4.13 by running piglit in a loop a
few times.</pre>
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