** Description changed: + [Impact] + Users on newer UEFI firmware that follows spec 2.4b. (such an any new-ish Lenovo laptops, apparently, perhaps new Dell systems as well, etc.) + + [Test case] + With the patch installs may fail to complete, update-grub may fail to run. + + 1) sudo update-grub + Notice whether the command shows an arithmetic error running /etc/grub.d/30_uefi-firmware + + [Regression potential] + Limited; this fixes a value formatting error which caused any hex to be matched as string rather than an hex value in grub config scripts -- it will still match correctly on older BIOS versions. + + --- + Some new Bios would like to support the new feature,capsule update, on UEFI spec. 2.4b. So the UEFI variable OsIndicationsSupported will be set as 0x1F on Bios, this causes the update-grub fail, also Ubuntu installation fail. $ sudo update-grub Generating grub configuration file ... Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported. Found linux image: /boot/vmlinuz-3.19.0-16-generic Found initrd image: /boot/initrd.img-3.19.0-16-generic Found linux image: /boot/vmlinuz-3.19.0-15-generic Found initrd image: /boot/initrd.img-3.19.0-15-generic /etc/grub.d/30_uefi-firmware: 34: /etc/grub.d/30_uefi-firmware: arithmetic expression: expecting EOF: " 1f & 1 " ~
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1456911 Title: Ubuntu installation/update-grub fail on specific BIOS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1456911/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
