why did you mount /dev/sda2 to /boot/grub? Can you undo that and try again?
** Changed in: grub2 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880414 Title: package shim-signed 1.39+15+1533136590.3beb971-0ubuntu1 failed to install/upgrade: Abhängigkeitsprobleme - Trigger bleiben unverarbeitet To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1880414/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs