Thanks for testing. That is good news. There was only one commit added to -41 and that seems to be the fix for this bug:
commit e9820e415895bdd9cfd21f87e80e3e0a10f131f0 Author: Kamal Mostafa <ka...@canonical.com> Date: Mon Sep 26 15:29:52 2016 -0700 UBUNTU: (fix) NVMe: Don't unmap controller registers on reset ** Changed in: linux (Ubuntu) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Xenial) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1628546 Title: 4.4.0-40-generic no prompts for disk encryption + loops on dots load screen Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Bug description: Since the upgrade to Ubuntu's 16.04.1 Linux kernel 4.4.0-40.60, it is impossible to boot my machine with full root encryption. It will keep loading the purple Ubuntu "dots" loading screen for ages and stay there. There is no issue rebooting back with kernel 4.4.0-38.57. I tried recreating the initramfs to no avail: update-initramfs -d -u -k 4.4.0-40-generic Hardware is a Dell Laptop: XPS13 9350 16GB/i7/512GB SSD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1628546/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp