@ Steve Langasek (vorlon), Previously I have not touched the UEFI/BIOS system of the *Lenovo V130* that I have access to, but now, that you ask about it, I had better do it in order to help identify what goes wrong, when trying to boot USB drives cloned from Groovy ISO files.
When testing Groovy iso files, the fix against the boothole bug was entered into this computer, so that USB drives that used to boot would no longer boot. I turned off secure boot, and then it was possible again to boot for example Ubuntu 20.04.1 LTS (cloned to a USB drive). This matches the observation, that Groovy iso files worked until you modified the boot system (when you removed syslinux boot in BIOS mode, but obviously also modified the boot system in UEFI mode). But USB drives cloned from the current Ubuntu Groovy as well as Lubuntu Groovy do not boot. ** Attachment added: "lenovo-v130_boot-option-menu.jpg" https://bugs.launchpad.net/ubuntu/+source/cd-boot-images-amd64/+bug/1892754/+attachment/5407322/+files/lenovo-v130_boot-option-menu.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1892754 Title: Unable to boot in UEFI+secure boot mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cd-boot-images-amd64/+bug/1892754/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
