Comment 72 for bug 1886148

I can report progress: There are new compressed image files to be extracted and cloned to USB drives for UEFI and BIOS mode, that can boot also with secure boot in a computer updated to squash the boothole bug.

You find these image files at

https://phillw.net/isos/linux-tools/uefi-n-bios/?C=M;O=D

where you also find files with the corresponding md5sums.

These compressed image files are similar to the previous ones made recently, but the boot system is made by installing Ubuntu Focal from the current daily iso files (post 20.04.1 LTS) with up to date program packages, that include secure boot shims for the relevant components.

This works also with a Lenovo V130, that refuses to boot USB boot drives cloned from current daily Groovy iso files in UEFI mode. It is a workaround in order to boot the current daily Groovy operating systems live via a grub-n-iso method.

See details at this link,

https://ubuntuforums.org/showthread.php?t=2447379&p=13985029#post13985029