Ok. It is known that shim-signed does not install on systems not booted in UEFI mode, because it expects to write to UEFI nvram variables.
** Changed in: shim-signed (Ubuntu) Status: New => Triaged ** Summary changed: - package shim-signed 1.34.8+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1 + (non-UEFI) package shim-signed 1.34.8+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766717 Title: (non-UEFI) package shim-signed 1.34.8+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1766717/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs