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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT various] kms_flip fails with "inter-flip ts jitter: 0s, 183334usec" or similar time around 180msec"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95236">95236</a>
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<th>Summary</th>
<td>[BAT various] kms_flip fails with "inter-flip ts jitter: 0s, 183334usec" or similar time around 180msec
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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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>
</tr>
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<th>Reporter</th>
<td>daniel@ffwll.ch
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<div>
<pre>Various machines seem to be affected on various testcases. Looking at
igt@kms_flip@basic-flip-vs-wf_vblank affected machines are bsw-nuc-2,
bdw-ultra, byt-nuc, snb-x220t, ild-hp8440p. There might be more. Example log
from igt:
(kms_flip:6410) CRITICAL: Test assertion failure function check_state, file
kms_flip.c:698:
(kms_flip:6410) CRITICAL: Failed assertion: fabs((((double) diff.tv_usec) -
usec_interflip) / usec_interflip) <= 0.005
(kms_flip:6410) CRITICAL: Last errno: 25, Inappropriate ioctl for device
(kms_flip:6410) CRITICAL: inter-vblank ts jitter: 0s, 183335usec
Subtest basic-flip-vs-wf_vblank failed.</pre>
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