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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW/HSW Bisected] Gpu hang when running unigine-demos"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82846">82846</a>
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</tr>
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BDW/HSW Bisected] Gpu hang when running unigine-demos
</td>
</tr>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>jianx.zhou@intel.com
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<pre>Platform: BDW/HSW
Libdrm: (master)libdrm-2.4.56-8-gd9ce09de12131fa8c5ff2d7c2dbd6b61d8a5fd14
Mesa: (master)a4359bcaa599291ef1588376a419a0bcfbd02396
Xserver:
(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.914-60-gf5469681b620d9d6ccaf53e92ed31f931cb03b0d
Cairo: (master)932548ef25864958ef966ffe83e7c945c3ff3cd4
Libva: (master)acfcd5f0637a951d50c5112c7dfbd46f1d0dcdb3
Libva_intel_driver: (master)f3f49f2f0e6b3669d9b09341a11cf0b96e138674
Kernel: (drm-intel-nightly)git-2b6e6b
Bug detailed description:
----------------------------------------------
Gpu hang when running unigine-demos on BDW/HSW, this issue doesn’t exist on
BYT/IVB.The problem exist both on gnome-sesssion and Raw X.
It is Mesa regression, bisected result show the first bad commit is:
commit 45eb06566830eb49551c27262cdd936bf42ec922
Author: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
AuthorDate: Sun Aug 17 00:45:27 2014 -0700
Commit: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
CommitDate: Mon Aug 18 18:18:50 2014 -0700
i965: Enable instruction compaction on Gen8+.
Please see dmesg.log and output.log and Xorg.0.log
Reproduce steps:
---------------------------------------------
1. xinit&
2. export LD_LIBRARY_PATH=bin/:$LD_LIBRARY_PATH
export force_glsl_extensions_warn=true
vblank_mode=0 ./bin/Tropics -video_app opengl -data_path ../ -sound_app null
-system_script tropics/unigine.cpp -engine_config ../data/unigine.cfg
-video_mode -1 -video_fullscreen 1 -video_multisample 0 -extern_define PHORONIX
-video_width 1920 -video_height 1080</pre>
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