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<body><span class="vcard"><a class="email" href="mailto:freedesktop.bugzilla@yq.fi" title="Johannes Brummer <freedesktop.bugzilla@yq.fi>"> <span class="fn">Johannes Brummer</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BDW] : [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98994">bug 98994</a>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BDW] : [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98994#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BDW] : [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98994">bug 98994</a>
from <span class="vcard"><a class="email" href="mailto:freedesktop.bugzilla@yq.fi" title="Johannes Brummer <freedesktop.bugzilla@yq.fi>"> <span class="fn">Johannes Brummer</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=129581" name="attach_129581" title="dmesg from drm-tip (checked out 20170214 09:34UTC)">attachment 129581</a> <a href="attachment.cgi?id=129581&action=edit" title="dmesg from drm-tip (checked out 20170214 09:34UTC)">[details]</a></span>
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</pre>
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