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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT/BSW]igt/gem_pread_after_blit/default-hang causes *ERROR* Timed out: waiting for media to ack"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88445">88445</a>
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<th>Summary</th>
<td>[BYT/BSW]igt/gem_pread_after_blit/default-hang causes *ERROR* Timed out: waiting for media to ack
</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>All
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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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
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>huax.lu@intel.com
</td>
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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>
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<pre>Created <span class=""><a href="attachment.cgi?id=112271" name="attach_112271" title="dmesg">attachment 112271</a> <a href="attachment.cgi?id=112271&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: new case
Non-working platforms: BSW
==kernel==
--------------------------
drm-intel-nightly/95cce4b4c5f3ecaf9c1c01d42f670da2748fcffb
commit 95cce4b4c5f3ecaf9c1c01d42f670da2748fcffb
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Wed Jan 14 20:58:31 2015 +0100
drm-intel-nightly: 2015y-01m-14d-19h-58m-09s UTC integration manifest
==Bug detailed description==
-----------------------------
It causes <3>[ 86.767786] [drm:chv_read32 [i915]] *ERROR* Timed out: waiting
for media to ack.
igt/gem_pread_after_blit/snooped-hang also has this error.
output:
root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_pread_after_blit --run-subtest default-hang
IGT-Version: 1.9-g5fb26d1 (x86_64) (Linux:
3.19.0-rc3_drm-intel-nightly_0056b6_20150109+ x86_64)
Subtest default-hang: SUCCESS (56.270s)
==Reproduce steps==
----------------------------
1. ./gem_pread_after_blit --run-subtest default-hang</pre>
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