Ubuntu
linux package

  1. Bug #1550779
  2. Comment #98

Comment 98 for bug 1550779

Revision history for this message
Tom Mittelstaedt (1358-s) wrote : Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A FIFO underrun - Xorg glitches

Let me join this with the following `dmesg | tail`:

[Feb24 23:34] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 00:23] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 01:57] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 04:04] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 04:59] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 06:19] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 06:31] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[Feb25 06:47] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

4.18.0-15-generic #16-Ubuntu SMP Thu Feb 7 10:56:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
on an i7-6700

The flickering and the system crashes are gone, but the error still persits in the logs.