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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 --- - [IVB Regression]Subcases dpms-vs-vblank-race-interruptible and modeset-vs-vblank-race of kms_flip fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77908">77908</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB Regression]Subcases dpms-vs-vblank-race-interruptible and modeset-vs-vblank-race of kms_flip fail
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
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<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=97929" name="attach_97929" title="dmesg">attachment 97929</a> <a href="attachment.cgi?id=97929&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: IVB
kernel: (drm-intel-fixes) 58b87a391d67e35e3aa1fc6c80890b491d73ad46
Bug detailed description:
----------------------------
Subcases dpms-vs-vblank-race-interruptible and modeset-vs-vblank-race of
kms_flip fail on latest -fixes(58b87a391d67e35e3aa1fc6c80890b491d73ad46).
It's a regression bug:
good commit: b6842feb63a23a6a988f4e1ffb93408d8ff6931e
bad commit: 58b87a391d67e35e3aa1fc6c80890b491d73ad46
we will bisect it later
output on -fixes kernel:
./kms_flip --run-subtest modeset-vs-vblank-race
IGT-Version: 1.6-g78e4c2b (x86_64) (Linux:
3.15.0-rc2_drm-intel-fixes_58b87a_20140424_debug+ x86_64)
Using monotonic timestamps
Beginning modeset-vs-vblank-race on crtc 5, connector 16
1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000
Test assertion failure function run_test_step, file kms_flip.c:901:
Last errno: 22, Invalid argument
Failed assertion: __wait_for_vblank(TEST_VBLANK_BLOCK, o->pipe, 1, 0, &reply)
== 0
Subtest modeset-vs-vblank-race: FAIL
Reproduce steps:
----------------------------
1. ./kms_flip --run-subtest dpms-vs-vblank-race-interruptible
or
./kms_flip --run-subtest modeset-vs-vblank-race</pre>
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