[Bug 102340] New: [HSW] uncleared fifo underrun on pipe A and CPU pipe A FIFO underrun error at boot time

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102340

            Bug ID: 102340
           Summary: [HSW] uncleared fifo underrun on pipe A and CPU pipe A
                    FIFO underrun error at boot time
           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: burhansylhet at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 133646
  --> https://bugs.freedesktop.org/attachment.cgi?id=133646&action=edit
4.12.8-2-ARCH dmesg with drm.debug=0xe

After the upgrade to 4.12 I get following while booting

[drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo
underrun on pipe A
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun

Laptop: HP 15 notebook PC. Kernel 4.11, 4.10, 4.9 work fine without errors.

uname -a:
Linux Extreme 4.12.8-2-ARCH #1 SMP PREEMPT Fri Aug 18 14:08:02 UTC 2017 x86_64
GNU/Linux

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