So I dug around in fdo intel BZ area and found that adding the following to the kernel may produce better logs:
"drm.debug=0xe log_buf_len=4M" I have attached the resulting log. It looks a lot like the other bugs for ThinkPad that have been around for a long time now. https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1263681 https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1314213 ** Attachment added: "dmesg.3.13.0-35-generic.debug.log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1360545/+attachment/4195899/+files/dmesg.3.13.0-35-generic.debug.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1360545 Title: [trusty] [drm] HPD interrupt storm detected on connector DP-1: switching from hotplug detection to polling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1360545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs