This is a screen shot of the failed boot. I apologize for the poor quality -- each line of text is only 1.75mm high on my high-DPI display.
** Attachment added: "boot log pic" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1524122/+attachment/4531989/+files/boot%20log%20hang.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1524122 Title: XPS 15 (9550) Won't boot with 4.4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1524122/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs