While experimenting with FreeDOS and Windows PE, I discovered that disabling UEFI mode (switching to Legacy mode) means I can now boot into kernel 5.15. Certainly not a solution, but at least a workaround.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-5.13 in Ubuntu. https://bugs.launchpad.net/bugs/1981590 Title: Kernel 5.15 hangs at "Loading initial ramdisk" Status in linux-signed-hwe-5.13 package in Ubuntu: Confirmed Bug description: Updated from kernel 5.13 to 5.15 today. After rebooting the system hangs at "Loading ramdisk". I reverted to 5.13 and it started properly. More detail on the way. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.13.0-52-generic 5.13.0-52.59~20.04.1 ProcVersionSignature: Ubuntu 5.13.0-52.59~20.04.1-generic 5.13.19 Uname: Linux 5.13.0-52-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Jul 13 14:48:42 2022 InstallationDate: Installed on 2021-01-06 (553 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) SourcePackage: linux-signed-hwe-5.13 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.13/+bug/1981590/+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
