Every day I review my syslog files, and since about 17.04, I've seen these kernel errors. I see the same on my current 17.10. The system seems to operate fine otherwise. I'm using a Toshiba E55 laptop.
syslog.1:Apr 15 20:56:33 Satellite-E55 kernel: [71366.145636] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A syslog.1:Apr 15 20:56:33 Satellite-E55 kernel: [71366.145731] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
I suspect a kernel problem, not a hardware problem. Maybe I need to pass a kernel parameter via GRUB?
Any ideas on how to resolve this?