[Bug 97375] New: [BSW]Long time test display, display exception, and got *ERROR* CPU pipe x FIFO underrun error.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97375

            Bug ID: 97375
           Summary: [BSW]Long time test display, display exception, and
                    got *ERROR* CPU pipe x FIFO underrun error.
           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: william.wu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

CPU:Braswell-N3150
Soft stack:libdrm 2.4.60 libva1.6.1 libva-intel-driver 1.6.1.
Kernel version:linux4.2, updated to 4.6.3 can still duplicated.

error log: 
[drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun 
[drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe B FIFO underrun 
[drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe C FIFO underrun

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