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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>highest
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Regression]glxgears causes X hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82929">82929</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BDW Regression]glxgears causes X hang
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>blocker
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
<p>
<div>
<pre>System Environment:
--------------------------
Platform: BDW
Libdrm:
(master)libdrm-2.4.56-8-gd9ce09de12131fa8c5ff2d7c2dbd6b61d8a5fd14
Mesa: (master)a1853eaea7fa5caf59b52567cc49f964ce5293ec
Xserver:
(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.914-60-gf5469681b620d9d6ccaf53e92ed31f931cb03b0d
Libva: (master)acfcd5f0637a951d50c5112c7dfbd46f1d0dcdb3
Libva_intel_driver:(master)f3f49f2f0e6b3669d9b09341a11cf0b96e138674
Kernel: (drm-intel-nightly)49ceddc7b3b0e3f7eb21b9fb4c9b840cff630047
Bug detailed description:
---------------------------
On BDW with mesa master branch, start X, then run glxgears, or run
Piglit/ogles3conform/ogles2conform/ogles1conform case, X hang occurs.
It works well on 10.2 branch.
Bisect is in process.
run glxgears
output:
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
intel_do_flush_locked failed: Input/output error
dmesg
[ 298.895715] [drm] stuck on render ring
[ 298.896666] [drm] GPU HANG: ecode 0:0x87949ff9, in X [4431], reason: Ring
hung, action: reset
[ 298.896668] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 298.896669] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 298.896671] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 298.896672] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 298.896673] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 298.896756] [drm:i915_error_work_func] resetting chip
[ 298.898723] [drm:init_status_page] render ring hws offset: 0x007fb000
[ 298.898737] [drm:init_status_page] bsd ring hws offset: 0x0081d000
[ 298.898746] [drm:init_status_page] blitter ring hws offset: 0x0083e000
[ 298.898753] [drm:init_status_page] video enhancement ring hws offset:
0x0085f000
[ 298.898788] [drm:ironlake_update_primary_plane] Writing base 00000000
00000000 0 0 7680
[ 300.896739] [drm:intel_print_rc6_info] Enabling RC6 states: RC6 on, RC6p
off, RC6pp off
[ 304.898807] [drm] stuck on render ring
[ 304.899776] [drm] GPU HANG: ecode 0:0xf3cffffe, in X [4431], reason: Ring
hung, action: reset
[ 304.899863] [drm:i915_error_work_func] resetting chip
[ 304.901815] [drm:init_status_page] render ring hws offset: 0x007fb000
[ 304.901829] [drm:init_status_page] bsd ring hws offset: 0x0081d000
[ 304.901838] [drm:init_status_page] blitter ring hws offset: 0x0083e000
[ 304.901846] [drm:init_status_page] video enhancement ring hws offset:
0x0085f000
[ 304.901881] [drm:ironlake_update_primary_plane] Writing base 00000000
00000000 0 0 7680
[ 306.899854] [drm:intel_print_rc6_info] Enabling RC6 states: RC6 on, RC6p
off, RC6pp off
Reproduce steps:
----------------------------
1. xinit
2. glxgears</pre>
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