Ubuntu
linux package

  1. Bug #1727662
  2. Comment #74

Comment 74 for bug 1727662

Revision history for this message
In , Johan-freedesktop (johan-freedesktop) wrote :

This error still occurs on kernel 4.20.

My model is T470s and the behavior is consistent: It only happens when connected to an external display through the dock, not when using it disconnected from the dock. Can (most of the time) be triggered by changing display settings through xrandr.

Dock model is SD20F82750.

Dmesg error message:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun

GPU: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)