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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IGT] some kms_cursor_* tests has a dmesg warn *ERROR* CPU pipe A|B FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105493#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [IGT] some kms_cursor_* tests has a dmesg warn *ERROR* CPU pipe A|B FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105493">bug 105493</a>
from <span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=138828" name="attach_138828" title="dmesg_fifo">attachment 138828</a> <a href="attachment.cgi?id=138828&action=edit" title="dmesg_fifo">[details]</a></span>
dmesg_fifo
Still valid:
$ : sudo -E ./intel-graphics/intel-gpu-tools/tests/kms_cursor_crc --r
cursor-256x256-rapid-movement
IGT-Version: 1.22-g80e4910 (x86_64) (Linux:
4.16.0-rc7-drm-intel-qa-ww15-commit-6b9e85a+ x86_64)
Subtest cursor-256x256-rapid-movement: SUCCESS (4.806s)
$ : cat dmesg_fifo | grep -i fifo
[ +0.000131] [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO
underruns on pipe A
[ +0.000268] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
A FIFO underrun
[ +0.000031] [drm:intel_fbc_underrun_work_fn [i915]] Disabling FBC due to FIFO
underrun.
[ +0.015276] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
A FIFO underrun</pre>
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