This bug was fixed in the package grub2-signed - 1.104 --------------- grub2-signed (1.104) cosmic; urgency=medium
* Rebuild against grub2 2.02+dfsg1-5ubuntu2. (LP: #1785033) -- Mathieu Trudel-Lapierre <[email protected]> Wed, 05 Sep 2018 14:32:39 -0400 ** Changed in: grub2-signed (Ubuntu Cosmic) Status: New => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1785033 Title: GRUB needs to support 64-bit efi linear frame buffer address Status in HWE Next: In Progress Status in OEM Priority Project: Triaged Status in grub2 package in Ubuntu: New Status in grub2-signed package in Ubuntu: Fix Released Status in grub2 source package in Trusty: New Status in grub2-signed source package in Trusty: New Status in grub2 source package in Xenial: New Status in grub2-signed source package in Xenial: New Status in grub2 source package in Bionic: New Status in grub2-signed source package in Bionic: New Status in grub2 source package in Cosmic: New Status in grub2-signed source package in Cosmic: Fix Released Bug description: [Rationale] More firmwares support above 4G mmio configureation and the EFI Graphics Output Protocol can return a 64-bit linear frame buffer address have been implemented in some firmware/BIOS. Grub2 currently only pass 32-bit framebuffer base to kernel. The Linux kernel has already added support to handle 64-bit linear framebuffer address in the efifb driver now. So GRUB2 should support 64-bit EFI linear frame buffer address. [Impact] Some machines block booting with firmware/bios implemented 64-bit EFI linear frame buffer address,due to Grub passing incorrect(only 32-bit) EFI linear frame buffer. [Test cases] Need Bios/Firmware support, 1) Make sure the machine with the Bios implemented 64-bit EFI linear frame buffer address. some machine need to enable above 4G mmio on bios setup menu. 2) Boot up. [Solution] A patch has been committed and accepted by maintainer http://git.savannah.gnu.org/cgit/grub.git/commit/?id=886edba8770ccbc3def0af2a7d6b346d00d0af2f [Regression Potential] Minimal, it's unlikely completing the whole framebuffer address will affect those which hasn't used above 32-bits framebuffer address. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1785033/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : [email protected] Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
