I see graphic errors on external monitors and following messages in logs with 4.13.0 kernel. Errors appear after laptop works for 3-4 days without reboot.
kernel: [173125.746076] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A kernel: [173125.746104] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun kernel: [173125.795556] [drm:intel_check_cpu_fifo_underruns [i915]] *ERROR* fifo underrun on pipe B Ubuntu 17.10, hardware is Dell Latitude E5540 -- 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: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
