Had a similar issue on a 20.04 install today after updating to 5.14. Woke it up from suspend on 5.10.0-1057-oem. Rebooted once (some screen issues that turned out to be the screen), installed updates via update- manager, rebooted using the new 5.14.0-1024-oem kernel and it just hung. Black screen, blinking cursor.
I noticed that the lenovo splash screen did not come up after selecting the 5.14 kernel in grub. It does with 5.10. Going back to 5.10 works as before. I have a kern.log saved from the before and after the update, but do I need to make sure it is sanitized for secure boot keys and such? Also, it should be noted that it is a dual GPU system with an intel and nvidia. -- 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/1942684 Title: Kernel 5.14.X / 5.13.14 fails to boot Status in linux package in Ubuntu: Confirmed Bug description: I have been testing kernels 5.14.0 and 5.14.1 since their release on https://kernel.ubuntu.com/~kernel-ppa/mainline/ and my machine fails to boot with either one. However, I am able to boot just fine with 5.14.0-rc7. journalctl -b output attached with 5.14.1 Motherboard: MSI X570 Tomahawk CPU: AMD 5900X GPU: AsusTek 6800XT OS: Hirsute 21.04 --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 21.04 InstallationDate: Installed on 2021-07-04 (62 days ago) InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420) Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash Tags: wayland-session hirsute Uname: Linux 5.14.0-051400rc6-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942684/+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