It looks like reverting commit 59ed4b6 requires several other commits get reverted, so it's probably not the best approach.
We know that this bug is fixes in Xenial. It's probably best to track down what commit fixes this in Xenial versus what commit broke this in Trusty. In comment 41, we found the 3.19 kernel is good, so we should test some earlier ones. Can you test the following 3.16 kernel: https://launchpad.net/ubuntu/+source/linux/3.16.0-23.31/+build/6478448 You would need to install both the linux-image and linux-image-extra .deb packages. Thanks -- 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/1649326 Title: EFI stub loader broken in kernel 3.13.0-101-generic (& later in 3.13 series) Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Confirmed Bug description: The EFI stub loader produces consistent boot errors when booting Trusty starting with version 3.13.0-101-generic. This bug can be reproduced in many ways (using efibootmgr, an EFI shell, rEFInd, etc.). One approach is: 1) Install an EFI shell on the computer and set it as the default boot option using efibootmgr. 2) Copy the kernel and initrd files from /boot to /boot/efi. 3) Rename the kernel file to use a .efi filename extension. 4) Reboot into the EFI shell. 5) Try to launch the kernel with a command like: fs0:\vmlinuz-3.13.0-104-generic.efi ro root=/dev/sda2 initrd=\initrd.img-3.13.0-104-generic The result will be a hung or crashed system. (In VirtualBox, in which I've tested this, the VM produces a "guru meditation" and the session terminates.) I myself have tested only with the 3.13.0-104 kernel; however, reports from others indicate that the problem began with the 3.13.0-101 kernel. See this Kubuntu forum thread for details: https://www.kubuntuforums.net/showthread.php?71204-Cannot-load-latest- kernels Note that early on, this thread focuses on rEFInd; however, the bug can be reproduced with other boot managers, including the EFI shell, as described in the preceding procedure, so I do not believe this is a rEFInd bug. rEFInd relies on the EFI stub loader to boot a Linux kernel, and I believe it's this component that's failing. The problem does NOT occur when using GRUB to launch the kernel. (GRUB does not rely on the EFI stub loader.) I have NOT encountered the problem with Xenial and its 4.4.0-series kernels (last tested: 4.4.0-53-generic) or Yakkety and its 4.8.0-series kernels (last tested: 4.8.0-30-generic). I have not yet tested Trusty with kernels from series beyond 3.13.0. --- ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: rodsmith 1675 F.... pulseaudio CurrentDesktop: LXDE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=561add6d-844e-4428-8378-d92bb112d0fc InstallationDate: Installed on 2014-04-27 (960 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lsusb: Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-106-generic root=UUID=78ff568b-2c22-4b31-9e0c-72703dca4460 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-106.153-generic 3.13.11-ckt39 RelatedPackageVersions: linux-restricted-modules-3.13.0-106-generic N/A linux-backports-modules-3.13.0-106-generic N/A linux-firmware 1.127.22 RfKill: Tags: trusty Uname: Linux 3.13.0-106-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649326/+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
