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[CI][GLK] drm:intel_cpu_fifo_underrun_irq_handler [i915] *ERROR* CPU pipe B FIFO underrun
Submitted by Tomi Sarvela @tsa
Assigned to Intel GFX Bugs mailing list
Link to original bug (#106538)
Description
FIFO underruns made an appearance on Gemini Lake NUCs. Examples of tests it hits:
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4182/shard-glk4/igt@kms_cursor_legacy@cursorb-vs-flipb-toggle.html
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4182/shard-glk4/igt@kms_cursor_legacy@flip-vs-cursor-crc-atomic.html
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4182/shard-glk4/igt@kms_busy@extended-pageflip-modeset-hang-oldfb-render-b.html
This might be residual issues from 4.17-rc5 pull, and happened only on one run on host, so we'll follow if it happens again.