Public bug reported: Dear maintainer, The grub command "regexp" on Ubuntu 19.04 does not work in the secure boot mode, yet it works in the non-secure boot mode. Attached please find the screenshots about that. How to reproduce it? 1. Download Ubuntu 19.04 sever ISO file: https://www.ubuntu.com/download/server/thank-you?version=19.04&architecture=amd64 2. Boot in a machine with secure boot mode is enabled 3. In the grub menu, press "c" to enter grub shell 4. Run command: regexp --help and regexp -h
Nothing is shown. Normally the usage about regexp will be prompted. However, if the above steps were repeated in the secure boot mode is DISABLED, it works. The usage prompt about regexp is shown. To compare that, I downloaded https://cdimage.debian.org/mirror/cdimage/buster_di_rc1-live/amd64/iso-hybrid/debian-live-buster-DI-rc1-amd64-standard.iso Then repeated the above steps in the secure boot mode enabled machine, it was working. The regexp usage prompt was shown. ** Affects: grub-efi-amd64-signed (Ubuntu) Importance: Undecided Status: New ** Attachment added: "The screenshot about grub command regexp NOT working in the grub shell in secure boot mode" https://bugs.launchpad.net/bugs/1829331/+attachment/5264190/+files/grub-not-working-sb.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829331 Title: Grub regexp command does not work in secure boot mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-efi-amd64-signed/+bug/1829331/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
