[Bug 101058] New: [BDW] Multiple errors in i915

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101058

            Bug ID: 101058
           Summary: [BDW] Multiple errors in i915
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mael.lavault at protonmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

On my iris 6100 pro on a macbook pro, kernel 4.11.0 I get a lot of errors like
those using 3 DP displays with daisy chaining:

[drm:intel_mst_disable_dp [i915]] *ERROR* failed to update payload -22
[drm:intel_dp_start_link_train [i915]] *ERROR* failed to get link status
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe C FIFO
underrun
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO
underrun

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