Packages from vivid-proposed fixed the issue for me. Details:
Start-Date: 2015-12-18 12:14:56 Commandline: apt-get install grub-common/vivid-proposed -t vivid-proposed Upgrade: grub-efi-amd64-bin:amd64 (2.02~beta2-22ubuntu1.4, 2.02~beta2-22ubuntu1.5), grub-efi-amd64:amd64 (2.02~beta2-22ubuntu1.4, 2.02~beta2-22ubuntu1.5), grub-common:amd64 (2.02~beta2-22ubuntu1.4, 2.02~beta2-22ubuntu1.5), grub2-common:amd64 (2.02~beta2-22ubuntu1.4, 2.02~beta2-22ubuntu1.5), grub-efi-amd64-signed:amd64 (1.46.4+2.02~beta2-22ubuntu1.4, 1.46.5+2.02~beta2-22ubuntu1.5) End-Date: 2015-12-18 12:15:19 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274320 Title: Error: diskfilter writes are not supported To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/1274320/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
