Installer GUI locks up when help window is open and MOK fails

[thomasadelhardt]

Distribution

Mint 22.3 Cinnamon

Package version

6.6.7

Graphics hardware in use

NVIDIA Geforce RTX 3070

Frequency

Always

Bug description

During installation of Linux Mint with Secure Boot enabled, the installer GUI becomes stuck in a state where the help window remains permanently in focus. This prevents the user from completing the installation. After forced reboot, the system fails to boot.

Steps to reproduce

1. Boot Linux Mint installer with Secure Boot enabled in BIOS.
2. Start installation normally.
3. Reach the step where the installer asks the user to note down the Secure Boot MOK password (the one required after reboot).
4. Click Next.
5. Hurry and press the help button (question mark icon), before the installer proceeds to next screen.
6. A help window opens.
7. The installer proceeds to the next screen, but the help window stays open on top.
8. The help window cannot be closed, and it steals focus permanently, blocking all interaction with the installer.
9. User is forced to reboot.
10. After reboot, the system fails to boot, with this error:
    Failed to open \EFI\BOOT\mmx64.efi - not found
    Failed to load image ###: Not found
    Failed to start MokManager: Not Found
    Something has gone seriously wrong: import_mok_state() failed: Not Found

Expected behavior

It should be possible to close the help window so the install process can continue.

Additional information

The laptop I installed Linux Mint on is kind of slow, that might be why I where able to press the help button before the installere proceeded to the next step.

[thomasadelhardt]

This was opened in the wrong repository. The issue is related to the installer (Ubiquity), not Cinnamon. Closing.