我正在尝试诊断在 Dell Precision 7740 笔记本电脑上启动 Ubuntu 20.04 的问题。
最近，我的系统启动变得不稳定且不稳定。使用 GRUB 恢复菜单会显示多个内核，可能是由于更新。但是，这些内核（包括最新的内核）都无法可靠地运行。
使用恢复模式似乎可以正常进行而没有报告任何错误，但恢复启动似乎总是失败，出现黑屏并带有闪烁的光标。
现在唯一可行的方法是从恢复菜单更新 GRUB，然后继续启动。我应该采取什么步骤来找出发生了什么？
启动修复程序生成了以下 pastebin https://paste.ubuntu.com/p/7wd7sFDQpH/
运行 sudo apt update 和 sudo apt list --upgradable 后，我看到一些相关项目：
grub-efi-amd64-signed/focal-updates 1.142.6+2.04-1ubuntu26.4 amd64 [upgradable from: 1.142.5+2.04-1ubuntu26.3] grub-pc-bin/focal-updates 2.04-1ubuntu26.4 amd64 [upgradable from: 2.04-1ubuntu26.3] grub-pc/focal-updates 2.04-1ubuntu26.4 amd64 [upgradable from: 2.04-1ubuntu26.3] grub2-common/focal-updates 2.04-1ubuntu26.4 amd64 [upgradable from: 2.04-1ubuntu26.3] im-config/focal-updates,focal-updates 0.44-1ubuntu1.2 all [upgradable from: 0.44-1ubuntu1.1] initramfs-tools-bin/focal-updates 0.136ubuntu6.3 amd64 [upgradable from: 0.136ubuntu6.2] initramfs-tools-core/focal-updates,focal-updates 0.136ubuntu6.3 all [upgradable from: 0.136ubuntu6.2] initramfs-tools/focal-updates,focal-updates 0.136ubuntu6.3 all [upgradable from: 0.136ubuntu6.2]
运行 apt upgrade 后，我看到以下操作：
Setting up grub2-common (2.04-1ubuntu26.4) ... Setting up qemu-system-x86 (1:4.2-3ubuntu6.5) ... Setting up grub-pc-bin (2.04-1ubuntu26.4) ... Setting up fdisk (2.34-0.1ubuntu9.1) ... Setting up grub-pc (2.04-1ubuntu26.4) ... Sourcing file /etc/default/grub' Sourcing file/etc/default/grub.d/init-select.cfg' Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.4.0-47-generic Found initrd image: /boot/initrd.img-5.4.0-47-generic Found linux image: /boot/vmlinuz-5.4.0-45-generic Found initrd image: /boot/initrd.img-5.4.0-45-generic Found linux image: /boot/vmlinuz-5.4.0-42-generic Found initrd image: /boot/initrd.img-5.4.0-42-generic Found Windows Boot Manager on /dev/nvme0n1p1@/EFI/Microsoft/Boot/bootmgfw.efi Adding boot menu entry for UEFI Firmware Settings done Setting up qemu-utils (1:4.2-3ubuntu6.5) ... Setting up initramfs-tools-core (0.136ubuntu6.3) ... Setting up initramfs-tools (0.136ubuntu6.3) ... update-initramfs: deferring update (trigger activated) Setting up grub-efi-amd64-signed (1.142.6+2.04-1ubuntu26.4) ... Installing grub to /boot/efi. Installing for x86_64-efi platform. Installation finished. No error reported.
运行引导修复并尝试重新启动后，标准引导仍然无法正常工作。不过，进入恢复模式根菜单并等待似乎可行。