I also have this bug on a Dell Vostro 1520, and already removed the Dell Recovery Tool. However, next time I had this problem again.
Here are my dump output as asked in comment #4. ** Attachment added: "LaunchpadBug441941.tar.gz" https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/441941/+attachment/1729871/+files/LaunchpadBug441941.tar.gz -- grub fails after running Windows https://bugs.launchpad.net/bugs/441941 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs