[Bug 98994] [BDW] : [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98994

Johannes Brummer <freedesktop.bugzilla at yq.fi> changed:

           What    |Removed                     |Added
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                 CC|                            |freedesktop.bugzilla at yq.fi

--- Comment #12 from Johannes Brummer <freedesktop.bugzilla at yq.fi> ---
Created attachment 129581
  --> https://bugs.freedesktop.org/attachment.cgi?id=129581&action=edit
dmesg from drm-tip (checked out 20170214 09:34UTC)

Having the same problem: screen flickering black and resuming. Though sometimes
only half of the screen (Dell UP3214Q, detected as two 1920x2160 panels when
using DP1.2 MST)

Recreated with latest drm-tip. Dmesg as an attachment.

$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.10.0-rc8+ root=/dev/mapper/vg0-root ro drm.debug=0xe
log_buf_len=1M i915.enable_rc6=1 quiet
$ dmesg | grep -i drm > grep_drm_dmesg-drm.debug=0xe-i915.enable_rc6=1.txt

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