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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 - VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84836">84836</a>
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<th>Summary</th>
<td>VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/Gallium/radeonsi
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>alexander@tsoy.me
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=107614" name="attach_107614" title="dmesg output">attachment 107614</a> <a href="attachment.cgi?id=107614&action=edit" title="dmesg output">[details]</a></span>
dmesg output
Unigine Valley 1.0 and Heaven 4.0 cause VERDE GPU lockup when
ARB_sample_shading is enabled. With kernel 3.14.19 I got immediate lockup.
3.14.20 allows Valley and Heaven to run for up to 1 min. GPU fails to resume
after lockup, screen becomes corrupted and I need to reboot the system.
If I disable ARB_sample_shading (via env variable
MESA_EXTENSION_OVERRIDE=-GL_ARB_sample_shading) then VERDE GPU do not hang at
all (currently valley is running on my system for more than two hours without
lockups).
I also have BONAIRE GPU and it does not hang.
Software versions:
kernel-3.14.20
mesa-10.3.0
llvm-3.5
xf86-video-ati 7.4.0
libdrm-2.4.56</pre>
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