I primarily observe this issue when manually turning on my monitor after unlock, after it fails to autowake. The problem appears to occur at Apr 11 09:08:41 in the attached kern.log.
Running on Ubuntu 16.04 /proc/version: Linux version 4.13.0-36-generic (buildd@lgw01-amd64-033) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)) #40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 /proc/cpuinfo attached ** Attachment added: "cpuinfo" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110430/+files/cpuinfo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1727662 Title: [Lenovo ThinkPad T450s] Issues after docking and locking: [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/linux/+bug/1727662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
