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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 - Navi "divide error" hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111869">111869</a>
</td>
</tr>
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<th>Summary</th>
<td>Navi "divide error" hang
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>not set
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>git@dougty.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=145593" name="attach_145593" title="divide-error_09-20.txt">attachment 145593</a> <a href="attachment.cgi?id=145593&action=edit" title="divide-error_09-20.txt">[details]</a></span>
divide-error_09-20.txt
Occasionally, usually while watching videos in Firefox, my GPU will hang and
the screen will freeze -- sound and keyboard input still work in the
background, and I need to use REISUB hotkeys to reboot. This is separate, in
addition to the sdma and ring gfx_0.0.0 hangs.
Upon rebooting, journalctl shows the attached "divide error". I've included
logs from 3 instances of it happening. I'm currently using the Jul 14 firmware
from Fedora's linux-firmware package as the hang appears to occur more often on
the newer firmware from
<a href="https://people.freedesktop.org/~agd5f/radeon_ucode/navi10/">https://people.freedesktop.org/~agd5f/radeon_ucode/navi10/</a> however this may
just be placebo.
It occurs with or without the "0-sized IBs" kernel patch from
<a class="bz_bug_link
bz_status_NEW "
title="NEW - AMD Navi GPU frequent freezes on both Manjaro/Ubuntu with kernel 5.3 and mesa 19.2 -git/llvm9"
href="show_bug.cgi?id=111481#c33">https://bugs.freedesktop.org/show_bug.cgi?id=111481#c33</a> and on both PCIe 3.0
and 4.0. I'm not using a PCIe riser and the card works without issue on Windows
10 dual boot.
CPU: 3700X
GPU: Sapphire 5700XT (reference)
Motherboard: Gigabyte X570-I (BIOS F4)
Kernel: 5.3.0
Mesa: mesa-git 1:19.3.0_devel.115682.3c966fd688c-1
LLVM: llvm-git 10.0.0_r327425.63f6066b53d-1
Please let me know if any more information would be helpful, or if there's
anything I can do to troubleshoot. Thanks.</pre>
</div>
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