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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IGT] some kms_flip subtests causes [i915]] *ERROR* CPU pipe B/C FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96226#c44">Comment # 44</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [IGT] some kms_flip subtests causes [i915]] *ERROR* CPU pipe B/C FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96226">bug 96226</a>
from <span class="vcard"><a class="email" href="mailto:octaviox.hernandez.lopez@intel.com" title="Octavio <octaviox.hernandez.lopez@intel.com>"> <span class="fn">Octavio</span></a>
</span></b>
<pre>The below test has dmesg-warn on CFL QA
igt@kms_cursor_legacy@cursorB-vs-flipB-toggle
IGT-Version: 1.22-ga9741da (x86_64) (Linux:
4.16.0-rc7-drm-intel-qa-ww13-commit-8eb8f6d+ x86_64)
Test requirement not met in function __real_main1358, file
kms_cursor_legacy.c:1378:
Test requirement: !(n >= display.n_pipes)
Using pipe B for page flip, pipe B for cursor
Subtest cursorB-vs-flipB-toggle: SUCCESS (11.959s)
[ 83.165901] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun</pre>
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