Since upgrading to 16.04 on an X250 and T450s, I have had screen blanking issues with external displays on both machines. When the screen is more "active", such as when watching YouTube, the screen would go blank for 2 - 3 secs, then come to life again. The more "active" screen is the one that would blank.
I would see related kernel messages (IFO underrun) sometimes, but not always. I've just spent some time testing various kernels and can report that 4.6.7 (wily) is working well for me and the screen blanking issue is finally gone! Bliss. Happy to do more testing if it helps anyone. -- 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
