Ubuntu
linux package

  1. Bug #1550779
  2. Comment #107

Comment 107 for bug 1550779

Revision history for this message
vinibali (vinibali) wrote : Re: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

I just recently created another report (https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1848123).
So I'm using an HP 840 G5, connected with USB TypeC to Dock G4 which feeds two DP screens.
After each wake from S3 sleep, both displays are flickering and all the cores are clocked to 3,6GHz if I use the intel_pstate driver, the lid is closed. Only a cold boot helps this time.
I'll have a look on the Kernel parameters soon and update you.
BR