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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IGT] kms_flip@basic-flip-vs-wf_blank vblank interval differs from modeline"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101439">101439</a>
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<th>Summary</th>
<td>[IGT] kms_flip@basic-flip-vs-wf_blank vblank interval differs from modeline
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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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
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>tomi.p.sarvela@intel.com
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<pre>Piglit was changed to consider stderr output as WARN, and this exposed problem
with kms_flip@basic-flip-vs-wf_blank test on older gens (Gens 4 to 7)
Affected testhosts: Broadwater, Eagle Lake, Cantiga, Iron Lake, Sandy Bridge,
Ivy Lake, Haswell-R (curiously, not Haswell K-CPUs)
Errors are in form:
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16665.6us, measured 16717us +- 0.000us, difference 51.4us (inf sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16665.6us, measured 16717us +- 0.250us, difference 51.5us (205.9 sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16666.7us, measured 16633us +- 0.250us, difference 33.6us (134.4 sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16666.7us, measured 16633us +- 0.250us, difference 33.6us (134.4 sigma)</pre>
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