Is it a new or old system? What's the last working kernel version for you? Have you considered going back to the official kernel version for your Ubuntu (if it works?)?
Another option you may have would be to try disabling that "...SANITZE_ALL" config and rebuild the kernel from kernel.org using the updated ubuntu config. See if it works. -- 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