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
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
