Yes there is no difference with 4.5-rc5-wily. The last message after loading the kernel and then switching to a framebuffer console is about btrfs. Then nothing but reactions to USB devices plugged in and .. me forcing it to reboot.
I am wondering if something inside the initrd changed, in Xenial? I can remember booting 4.1 and 4.2 kernels successfully from the kernel-ppa with wily, I only fell back an older kernels to avoid specific i915 troubles. -- 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/1548083 Title: Xenial kernels hang on boot Status in linux package in Ubuntu: Confirmed Bug description: I run 3.19.0-999-generic #201502092105 SMP on a clevo W740SU. I cannot use a newer kernel, I tried various 4.3 to 4.4 versions, all show a similar symptom. The newer kernels do not seem to execute the init process, at least there are no traces of systemd in the first few minutes. Then after about 8 minutes systemd messages appear. Before that the last kernel trace I can see is from btrfs. I could only makee screenshots of those startup failures. --- ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2013-11-08 (834 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131108) Package: linux (not installed) SystemImageInfo: current build number: 0 device name: channel: daily last update: 2015-07-01 20:58:02 Tags: xenial Uname: Linux 3.19.0-999-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adb adm audio autopilot cdrom dip games libvirtd lpadmin plugdev sambashare saned sbuild scanner sudo tracing video voice _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1548083/+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