Just a small update:
I have been using i915.enable_psr=0 i915.enable_dc=0 i915.enable_fbc=0 
i915.enable_dp_mst=1 parameters for a few days, but except the very first or 
first two days when I unplugged the docking station, it doesn't helped at all.
So I decided to add error_capture=1 (record the GPU state following a hang) and 
a few days later complete it with a manual/udev disable for the i915 rc6. The 
kernel parameter has been removed 
(https://bugzilla.redhat.com/show_bug.cgi?id=1573482), however the function is 
still in the driver (/sys/class/drm/card0/power/rc6_enable:1).

Regards


** Bug watch added: Red Hat Bugzilla #1573482
   https://bugzilla.redhat.com/show_bug.cgi?id=1573482

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https://bugs.launchpad.net/bugs/1550779

Title:
  [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
  FIFO underrun

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