Ubuntu 23.10重启后无限进入memtest

目录

[TOC]

背景描述

好久没有更新过包了，就apt update && apt upgrade了一下，更新了70多个包，更新完没啥问题，后面才发现一重启就会进入memtest

这个界面，进度条跑完，0 Errors以后又开始无限循环检查mem，按esc重启还是这个界面, ctrl+alt+del也一样

到最后发现是更新的时候，有个文件自动给我改过了，这个:/boot/grub/grub.cfg

还好我有每天备份的好习惯

这是以前正常启动的时候备份的grub.cfg：

这是apt upgrade自动修改后出问题的grub.cfg：

可以看到从149行的export linux_gfx_mode下面开始，两个文件就不一样了，不知道是什么软件给我改成了启动memory test

解决方法（直接把以前备份的文件覆盖过来）

要是以前没有备份过的话，那就自己想办法吧，应该是有一些grub修复软件的?

下载一个Ubuntu的ISO镜像（版本随意）

https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/22.04/ubuntu-22.04.4-desktop-amd64.iso

用balenaEtcher将其烧录到U盘

然后重启，开机时按住Delete键进入BIOS，选择U盘启动

然后选择试用，到了安装界面直接退出安装就返回了Ubuntu试用的桌面，

打开终端，输入fdisk -l

找到出问题的分区（比如/dev/sda1），将其挂载到任意目录

mkdir ~/temp/sda1
mount /dev/sda1 ~/temp/sda1

进入挂载的目录，将以前备份过的grub.cfg覆盖过来，假设以前备份的文件位于~/grub.cfg

mv ~/temp/sda1/boot/grub/grub.cfg ~/temp/sda1/boot/grub/grub.cfg.bkp
mv ~/grub.cfg ~/temp/sda1/boot/grub

重启即可正常进入以前的Ubuntu系统

附:以前备份的正常的grub.cfg，供参考

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${initrdfail}" = 2 ]; then
   set initrdfail=
elif [ "${initrdfail}" = 1 ]; then
   set next_entry="${prev_entry}"
   set prev_entry=
   save_env prev_entry
   if [ "${next_entry}" ]; then
      set initrdfail=2
   fi
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function initrdfail {
    if [ -n "${have_grubenv}" ]; then if [ -n "${partuuid}" ]; then
      if [ -z "${initrdfail}" ]; then
        set initrdfail=1
        if [ -n "${boot_once}" ]; then
          set prev_entry="${default}"
          save_env prev_entry
        fi
      fi
      save_env initrdfail
    fi; fi
}
function recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=zh_CN
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=hidden
    set timeout=0
  # Fallback hidden-timeout code in case the timeout_style feature is
  # unavailable.
  elif sleep --interruptible 0 ; then
    set timeout=0
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
    set gfxpayload="${1}"
    if [ "${1}" = "keep" ]; then
        set vt_handoff=vt.handoff=7
    else
        set vt_handoff=
    fi
}
if [ "${recordfail}" != 1 ]; then
  if [ -e ${prefix}/gfxblacklist.txt ]; then
    if [ ${grub_platform} != pc ]; then
      set linux_gfx_mode=keep
    elif hwmatch ${prefix}/gfxblacklist.txt 3; then
      if [ ${match} = 0 ]; then
        set linux_gfx_mode=keep
      else
        set linux_gfx_mode=text
      fi
    else
      set linux_gfx_mode=text
    fi
  else
    set linux_gfx_mode=keep
  fi
else
  set linux_gfx_mode=text
fi
export linux_gfx_mode
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-20e3fa90-111f-4633-a1f4-6605db0b7627' {
    recordfail
    load_video
    gfxmode $linux_gfx_mode
    insmod gzio
    if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
    insmod part_gpt
    insmod ext2
    search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
    linux    /boot/vmlinuz-6.5.0-25-generic root=UUID=20e3fa90-111f-4633-a1f4-6605db0b7627 ro  quiet splash $vt_handoff
    initrd    /boot/initrd.img-6.5.0-25-generic
}
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-20e3fa90-111f-4633-a1f4-6605db0b7627' {
    menuentry 'Ubuntu, with Linux 6.5.0-25-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.0-25-generic-advanced-20e3fa90-111f-4633-a1f4-6605db0b7627' {
        recordfail
        load_video
        gfxmode $linux_gfx_mode
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        echo    'Loading Linux 6.5.0-25-generic ...'
        linux    /boot/vmlinuz-6.5.0-25-generic root=UUID=20e3fa90-111f-4633-a1f4-6605db0b7627 ro  quiet splash $vt_handoff
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-6.5.0-25-generic
    }
    menuentry 'Ubuntu, with Linux 6.5.0-25-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.0-25-generic-recovery-20e3fa90-111f-4633-a1f4-6605db0b7627' {
        recordfail
        load_video
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        echo    'Loading Linux 6.5.0-25-generic ...'
        linux    /boot/vmlinuz-6.5.0-25-generic root=UUID=20e3fa90-111f-4633-a1f4-6605db0b7627 ro single recovery nomodeset dis_ucode_ldr 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-6.5.0-25-generic
    }
    menuentry 'Ubuntu, with Linux 6.5.0-21-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.0-21-generic-advanced-20e3fa90-111f-4633-a1f4-6605db0b7627' {
        recordfail
        load_video
        gfxmode $linux_gfx_mode
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        echo    'Loading Linux 6.5.0-21-generic ...'
        linux    /boot/vmlinuz-6.5.0-21-generic root=UUID=20e3fa90-111f-4633-a1f4-6605db0b7627 ro  quiet splash $vt_handoff
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-6.5.0-21-generic
    }
    menuentry 'Ubuntu, with Linux 6.5.0-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.0-21-generic-recovery-20e3fa90-111f-4633-a1f4-6605db0b7627' {
        recordfail
        load_video
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        echo    'Loading Linux 6.5.0-21-generic ...'
        linux    /boot/vmlinuz-6.5.0-21-generic root=UUID=20e3fa90-111f-4633-a1f4-6605db0b7627 ro single recovery nomodeset dis_ucode_ldr 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-6.5.0-21-generic
    }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/10_linux_zfs ###
### END /etc/grub.d/10_linux_zfs ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+x64.efi)" --class memtest $menuentry_id_option 'memtest86+' {
    insmod part_gpt
    insmod ext2
    search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        linux    /boot/memtest86+x64.efi
}
menuentry 'Memory test (memtest86+x64.efi, serial console)' --class memtest $menuentry_id_option 'memtest86+-serial' {
    insmod part_gpt
    insmod ext2
    search --no-floppy --fs-uuid --set=root 20e3fa90-111f-4633-a1f4-6605db0b7627
        linux   /boot/memtest86+x64.efi console=ttyS0,115200
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
    fwsetup --is-supported
    if [ "$?" = 0 ]; then
        menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
            fwsetup
        }
    fi
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/35_fwupd ###
### END /etc/grub.d/35_fwupd ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###
Last modification：April 26, 2024
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