Diederik: Ubuntu 14.04 reached end of life, is no longer supported. Max, and anyone else affected by this issue with identical symptoms as Max on Ubuntu 16.04 with kernel 4.4.0-148, please consider testing this:
1. Add this to /etc/default/grub : GRUB_GFXPAYLOAD_LINUX="text" 2. Add this to the GRUB_CMDLINE_LINUX_DEFAULT option in /etc/default/grub : earlyprintk=efi,keep 3. Run: sudo update-grub 4. Try all of the following combinations of kernel boot parameters by editing them at the grub menu (https://wiki.ubuntu.com/Kernel/KernelBootParameters): mitigations=off dis_ucode_ldr mitigations=off dis_ucode_ldr mds=off (Only) if any of these combinations boot fine, try them again at least five times or until a boot fails. Take notes and finally report how often you tried them and how often they booted fine, and whether there was a failed boot for each of these combinations. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed in Ubuntu. https://bugs.launchpad.net/bugs/1829657 Title: Ubuntu 16.04 with kernel 4.4.0-148 hangs on boot on a ThinkPad L460 while 4.4.0-145 doesnt Status in linux-signed package in Ubuntu: Confirmed Bug description: After the automatic update from 4.4.0-145 to 4.4.0-148 on a Thinkpad L460 the boot process hangs before any visible output and doesnt proceed from there. Changing back to 4.4.0-145 in the grub menu makes the boot proceed normally. > lspci -knn | grep -A3 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) Subsystem: Lenovo Skylake Integrated Graphics [17aa:5051] Kernel driver in use: i915_bpo Kernel modules: i915_bpo ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-145-generic 4.4.0-145.171 ProcVersionSignature: Ubuntu 4.4.0-145.171-generic 4.4.176 Uname: Linux 4.4.0-145-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 CurrentDesktop: Unity Date: Sun May 19 16:36:06 2019 InstallationDate: Installed on 2016-11-04 (925 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) SourcePackage: linux-signed UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1829657/+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
