[123678.466040] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[123742.876516] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A (start=214815 end=214816) time 150 us, min 1073, max 1079, scanline start 1070, end 1080
$ uname -a
Linux flartchops 4.8.0-26-generic #28-Ubuntu SMP Tue Oct 18 14:39:52 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
I'm seeing this behavior on my Thinkpad x260:
[123678.466040] [drm:intel_ cpu_fifo_ underrun_ irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun pipe_update_ end [i915]] *ERROR* Atomic update failure on pipe A (start=214815 end=214816) time 150 us, min 1073, max 1079, scanline start 1070, end 1080
[123742.876516] [drm:intel_
$ uname -a
Linux flartchops 4.8.0-26-generic #28-Ubuntu SMP Tue Oct 18 14:39:52 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux