As reported upstream, when I used the drm-tip kernel I didn't see the FIFO error message in the logs again (but still had random power downs). I'm running the mainline kernel 4.15.0-041500rc8-generic and also don't see any of the described issues anymore (although I still have 1-2 random shutdowns per week while the notebook sits in the dock unattended, but there is currently no hint that it's related to the Intel driver).
-- 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
