Thanks. So I've never run anything before Ubuntu 16.04 on this laptop, so no, it's not an upgrade that's broken it.
I installed linux-image-4.6.0-040600rc4-generic, ran Gnome-Shell and plugged in the external monitor, while watching syslog. Saw the same error about fifo underrun before the whole system locked up again, requiring a hard reset. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568865 Title: [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe B FIFO underrun To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568865/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
