[Bug 106538] New: [CI][GLK] drm:intel_cpu_fifo_underrun_irq_handler [i915] *ERROR* CPU pipe B FIFO underrun

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed May 16 07:25:00 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=106538

            Bug ID: 106538
           Summary: [CI][GLK] drm:intel_cpu_fifo_underrun_irq_handler
                    [i915] *ERROR* CPU pipe B FIFO underrun
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tomi.p.sarvela at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

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.

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