[Bug 105493] [IGT] some kms_cursor_* tests has a dmesg warn *ERROR* CPU pipe A|B FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105493

--- Comment #6 from Elizabeth <elizabethx.de.la.torre.mena at intel.com> ---
Created attachment 138828
  --> https://bugs.freedesktop.org/attachment.cgi?id=138828&action=edit
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

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