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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 - Support for SandyBridge (Gen6) is broken in 12.x and 13.x branches"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100010">100010</a>
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<th>Summary</th>
<td>Support for SandyBridge (Gen6) is broken in 12.x and 13.x branches
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>13.0
</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>critical
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>mgorchak@qnx.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=129985" name="attach_129985" title="Look at hero back - there a lot of blue/violet dots and lines.">attachment 129985</a> <a href="attachment.cgi?id=129985&action=edit" title="Look at hero back - there a lot of blue/violet dots and lines.">[details]</a></span>
Look at hero back - there a lot of blue/violet dots and lines.
I used two Mesa3D versions: 12.0.6 and 13.0.5 on Intel SandyBridge (Gen6)
reference motherboard.
Also I tried different Intel kernel DRM drivers for i915 for last two years (no
big difference).
Some simple applications like gears, tunnel works perfect, even some complex
one works perfect too.
Problems start when I run glBenchmark 2.5.1 and glBenchmark 3.0 tests.
glBenchmark 3.0 doesn't work at all, immediately locking up GPU, glBenchmark
2.5.1 can work up-to 30 minutes with a lot of rendering artifacts and then
finally lock up GPU too.
Kernel DRM trying to resume GPU according to messages:
drm/i915: Resetting chip after gpu hang
[drm:80d0e4es] *ERROR* Timed out waiting for the gpu reset to complete
Sometimes successfully, sometimes not. If reset was successful, usually GPU
became locked up within very short period again.
Additionally Mesa 13.0.5 can't compile shaders shipped with glBenchmark 2.5.1
test, it complains with following error (never happens on 12.0.6):
GLBLog: error: declarations for uniform `fragmentColorVP` have mismatching
precision qualifiers
GLBLog: glGetError 502
Two attachments:
glbenchmark251-12.0.6-sandy2.bmp - look at hero back - there a lot of
blue/violet dots and lines.
glbenchmark251-12.0.6-sandy3.bmp - look at statue butt - there the same blue
and violet dots and lines.</pre>
</div>
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