Public bug reported: Fresh installation of Ubuntu 26.04, fully up-to-date.
As discussed here: https://discourse.ubuntu.com/t/84396 and presenting this bug report as requested by @ogra (Oliver Grawert) here: https://discourse.ubuntu.com/t/84396/2 --- BACKGROUND I have successfully installed Ubuntu 26.04 with full-disk TPM-backed encryption. I’ve enabled Pro. Everything works; I can boot into the machine normally, log in, run updates, use Firefox, etc. --- PROBLEM DESCRIPTION The three repair modes from Grub are unusable, as described below. Repair mode ----------- Grub > “Repair using enhanced-secureboot-desktop” The repair mode takes me to the login screen. I can log in. Thereafter, two problems happen. The following string is written to the console every few seconds (the frequency varies, being more often while I’m trying to type, less often while I’m doing nothing): [email protected]@ttyS0.service This appears over whatever I’m doing, making it hard to see and type, especially because of the next problem. Each character typed needs to be pressed on the keyboard once, twice, thrice or even four times before being registered. For example, to type ls -l<Enter>, I might need to press the following keys: lss -ll<Enter><Enter><Enter> All this, while the above-mentioned serial-console… message keeps being written to the console. Workaround: Fortunately, I have discovered a workaround: Use a different console. So, instead of logging in immediately, press (for example) Ctrl+Alt+F3 to go to console 3. Only console 1 has this problem; the other consoles work properly. Install mode ------------ Grub > “Install using enhanced-secureboot-desktop” In this mode, I never get a chance to do anything. It gets stuck on this line: [*** ] Job core.start-snapd.service/start running (11min 26s / no limit) The time just keeps going up and up with no progress. I’ve tried pressing Enter, Ctrl+C, and several other keys, but nothing happens. Going to another console (e.g. Ctrl+Alt+F3) gives only a login. But, logging in loops back to the login without an error message. Workaround: I have not been able to get past this. Factory reset ------------- Grub > “Factory reset using enhanced-secureboot-desktop” This does the same thing as the “Install mode” above. --- RELEVANT SYSTEM INFORMATION • Grub > “Continue to run mode” works; Grub > “UEFI Firmware Settings” works; only the three recovery options have problems. • I’m testing this in a virtual machine, specifically VirtualBox version 7.2.10. The host is Ubuntu 24.04. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: grub2 (not installed) ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0 Uname: Linux 7.0.0-22-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon Jun 22 15:04:07 2026 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: grub2 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session ** Attachment added: "The line where the installation and factory-reset get stuck" https://bugs.launchpad.net/bugs/2157878/+attachment/5978430/+files/Job%20taking%20forever.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2157878 Title: The three Ubuntu 26.04 repair modes from Grub are unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2157878/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
