Public bug reported: 2.04-1ubuntu12.2 broke boot on my machine. It doesn't work with kernels that don't have CONFIG_EFI_STUB=y configured. This really needs to fall back to the old mode if EFI handover is not supported by the kernel.
Also, after using a kernel with CONFIG_EFI_STUB=y it still failed to boot one of my machines with root specified by UUID. I was able to workaround it by manually specifying the boot device with /dev/nvme0n1p2 at the grub menu, and then specifying GRUB_DISABLE_LINUX_UUID=true in /etc/default/grub. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 Uname: Linux 5.5.10-customskl x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl icp ApportVersion: 2.20.11-0ubuntu8.6 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: KDE Date: Fri Mar 20 21:19:01 2020 DistUpgraded: 2019-10-26 18:15:16,011 DEBUG running apport_crash() DistroCodename: eoan DistroVariant: ubuntu DkmsStatus: zfs, 0.8.3, 5.5.10-customskl, x86_64: installed zfs, 0.8.3, 5.5.9-customskl, x86_64: installed GraphicsCard: Intel Corporation UHD Graphics 630 (Desktop) [8086:3e92] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. UHD Graphics 630 (Desktop) [1043:872f] InstallationDate: Installed on 2012-12-04 (2664 days ago) InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1) MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-5.5.10-customskl root=/dev/nvme0n1p2 ro rootflags=subvol=@ drm_kms_helper.edid_firmware=DP-1:edid/monoprice_28_4k.edid SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to eoan on 2019-10-26 (146 days ago) dmi.bios.date: 10/07/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2203 dmi.board.asset.tag: Default string dmi.board.name: ROG MAXIMUS X HERO (WI-FI AC) dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2203:bd10/07/2019:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGMAXIMUSXHERO(WI-FIAC):rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.100-4~yasi1~19.10 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.2-1ubuntu1~yasi1~19.10 version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.2-1ubuntu1~yasi1~19.10 version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20191209.2226.f66d3954-0ubuntu0+yasi1~19.10 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug eoan fonts kubuntu regression-update third-party-packages ubuntu ** Tags added: regression-update -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1868352 Title: grub2 2.04-1ubuntu12.2 breaks boot on some machines To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1868352/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp