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Gryu
Asked: 2020-02-17 04:13:14 +0800 CST

update-grub2 找不到自定义内核

  • 772

我已经编译了一个基于 5.4.18-xanmod10 内核的新内核。然后我安装了它：

sudo dpkg -i linux*5.4.18-xanmod10-custom*.deb

但是安装后没有找到update-grub2：

root@lenovo:~# ls /boot/
config-5.3.0-29-lowlatency           memtest86+.elf
config-5.4.18-xanmod10-custom        memtest86+_multiboot.bin
config-5.5.0-3.2-liquorix-amd64      System.map-5.3.0-29-lowlatency
config-5.5.0-4.1-liquorix-amd64      System.map-5.4.18-xanmod10-custom
config-5.5.4-xanmod3                 System.map-5.5.0-3.2-liquorix-amd64
grub                                 System.map-5.5.0-4.1-liquorix-amd64
initrd.img                           System.map-5.5.4-xanmod3
initrd.img-5.3.0-29-lowlatency       vmlinuz
initrd.img-5.4.18-xanmod10-custom    vmlinuz-5.3.0-29-lowlatency
initrd.img-5.5.0-3.2-liquorix-amd64  vmlinuz-5.4.18-xanmod10-custom
initrd.img-5.5.0-4.1-liquorix-amd64  vmlinuz-5.5.0-3.2-liquorix-amd64
initrd.img-5.5.4-xanmod3             vmlinuz-5.5.0-4.1-liquorix-amd64
initrd.img.old                       vmlinuz-5.5.4-xanmod3
memtest86+.bin                       vmlinuz.old

root@lenovo:~# update-grub2
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.3.0-29-lowlatency
Found initrd image: /boot/initrd.img-5.3.0-29-lowlatency
Found linux image: /boot/vmlinuz-5.3.0-29-lowlatency
Found initrd image: /boot/initrd.img-5.3.0-29-lowlatency
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done

还有其他内核存在，但重新启动后lowlatency，grub 菜单中只存在内核和 memtest。此外，在更新期间，它两次显示相同的内核。以前，在通用内核移动到另一个文件夹之前，通用内核和低延迟内核已在 grub 更新期间列出。

我该如何解决这个问题？

grub2 kernel 19.10

2 个回答

  1. Best Answer

    以下三个命令也解决了这个问题，根据 /etc/grub.d/README.lowlatency 中的文本，关闭 09_lowlatency 的可执行位并打开 10_linux 的位。我建议在调用 update-grub 之前编辑 /etc/default/grub 以将 GRUB_TIMEOUT 更改为正值。

    # chmod -x /etc/grub.d/09_lowlatency
# chmod +x /etc/grub.d/10_linux
# update-grub
    • 4

  2. 我已经解决了，但解决方案不是很好。

    1. 将低延迟 grub 配置文件复制到新的自定义 grub 配置文件中：sudo cp /etc/grub.d/09_lowlatency /etc/grub.d/08_custom
      我09_lowlatency按照以下说明获取文件：

      首先，让我们访问https://packages.ubuntu.com/。这一步不太明显。包“ubuntustudio-default-settings”包含一个名为“09_lowlatency”的文件。这个文件是一个 GRUB 配置文件，我们可以使用它来确保我们的低延迟内核首先启动并确保它保持这种状态。

    2. 拿走这些文件，这样它们就不会重复 grub 菜单条目，也不会在sudo update-grub2命令执行期间在列表中重复：
      sudo mv /etc/grub.d/10_linux /home/myuser/backup/ && sudo mv /etc/grub.d/09_lowlatency /home/myuser/backup/

    3. 我更改了文件中的一条case语句： 更改之前是：08_custom

      case "x$machine" in
    xi?86 | xx86_64)
        list=
        for i in /boot/vmlinuz-*lowlatency /vmlinuz-*lowlatency /boot/kernel-*lowlatency ; do
            if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        list2=
        for i in /boot/vmlinuz-*generic /vmlinuz-*generic /boot/kernel-*generic ; do
            if grub_file_is_not_garbage "$i" ; then list2="$list2 $i" ; fi
        done ;;
    *)
        list=
        for i in /boot/vmlinuz-*lowlatency /boot/vmlinux-*lowlatency /vmlinuz-*lowlatency /vmlinux-*lowlatency /boot/kernel-*lowlatency ; do
                  if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        list2=
        for i in /boot/vmlinuz-*generic /boot/vmlinux-*generic /vmlinuz-*generic /vmlinux-*generic /boot/kernel-*generic ; do
                  if grub_file_is_not_garbage "$i" ; then list2="$list2 $i" ; fi
        done ;;
esac

      改了之后变成了：

      case "x$machine" in
    xi?86 | xx86_64)
        list=
        for i in /boot/vmlinuz-*lowlatency ; do
            if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        for i in /boot/vmlinuz-*generic ; do
            if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        for i in /boot/vmlinuz-*xanmod10-custom ; do
            if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done ;;
    *)
        list=
        for i in /boot/vmlinuz-*lowlatency ; do
                  if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        for i in /boot/vmlinuz-*generic ; do
                  if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done
        for i in /boot/vmlinuz-*xanmod10-custom ; do
                  if grub_file_is_not_garbage "$i" ; then list2="$list2 $i" ; fi
        done ;;
esac

    我的ls -alh /boot和sudo update-grab2命令显示下一个：

    $ ls -alh /boot
total 275M
drwxr-xr-x  3 root root 4,0K feb 17 00:32 .
drwxr-xr-x 20 root root 4,0K feb 13 09:55 ..
-rw-r--r--  1 root root 231K jan 17 15:59 config-5.3.0-29-generic
-rw-r--r--  1 root root 231K jan 17 15:59 config-5.3.0-29-lowlatency
-rw-r--r--  1 root root 138K feb 16 03:54 config-5.4.18-xanmod10-custom
-rw-r--r--  1 root root 216K feb 15 19:56 config-5.5.0-4.1-liquorix-amd64
-rw-r--r--  1 root root 237K feb 15 16:06 config-5.5.4-xanmod3
drwxr-xr-x  4 root root 4,0K feb 17 00:28 grub
lrwxrwxrwx  1 root root   35 feb 16 09:06 initrd.img -> initrd.img-5.5.0-4.1-liquorix-amd64
-rw-r--r--  1 root root  46M feb 13 21:37 initrd.img-5.3.0-29-generic
-rw-r--r--  1 root root  46M feb 14 00:01 initrd.img-5.3.0-29-lowlatency
-rw-r--r--  1 root root  12M feb 16 08:36 initrd.img-5.4.18-xanmod10-custom
-rw-r--r--  1 root root  53M feb 16 09:07 initrd.img-5.5.0-4.1-liquorix-amd64
-rw-r--r--  1 root root  52M feb 17 00:32 initrd.img-5.5.4-xanmod3
lrwxrwxrwx  1 root root   30 feb 16 09:06 initrd.img.old -> initrd.img-5.3.0-29-lowlatency
-rw-r--r--  1 root root 179K jan 28  2016 memtest86+.bin
-rw-r--r--  1 root root 181K jan 28  2016 memtest86+.elf
-rw-r--r--  1 root root 181K jan 28  2016 memtest86+_multiboot.bin
-rw-------  1 root root 4,5M jan 17 15:59 System.map-5.3.0-29-generic
-rw-------  1 root root 4,5M jan 17 15:59 System.map-5.3.0-29-lowlatency
-rw-r--r--  1 root root 4,2M feb 16 03:54 System.map-5.4.18-xanmod10-custom
-rw-r--r--  1 root root 3,9M feb 15 19:56 System.map-5.5.0-4.1-liquorix-amd64
-rw-r--r--  1 root root 5,1M feb 15 16:06 System.map-5.5.4-xanmod3
lrwxrwxrwx  1 root root   32 feb 16 09:06 vmlinuz -> vmlinuz-5.5.0-4.1-liquorix-amd64
-rw-------  1 root root  11M jan 17 16:35 vmlinuz-5.3.0-29-generic
-rw-------  1 root root  11M jan 17 16:35 vmlinuz-5.3.0-29-lowlatency
-rw-r--r--  1 root root 6,6M feb 16 03:54 vmlinuz-5.4.18-xanmod10-custom
-rw-r--r--  1 root root 8,9M feb 15 19:56 vmlinuz-5.5.0-4.1-liquorix-amd64
-rw-r--r--  1 root root 7,2M feb 15 16:06 vmlinuz-5.5.4-xanmod3
lrwxrwxrwx  1 root root   27 feb 16 09:06 vmlinuz.old -> vmlinuz-5.3.0-29-lowlatency

$ sudo update-grub2
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.4.18-xanmod10-custom
Found initrd image: /boot/initrd.img-5.4.18-xanmod10-custom
Found linux image: /boot/vmlinuz-5.4.18-xanmod10-custom
Found initrd image: /boot/initrd.img-5.4.18-xanmod10-custom
Found linux image: /boot/vmlinuz-5.3.0-29-lowlatency
Found initrd image: /boot/initrd.img-5.3.0-29-lowlatency
Found linux image: /boot/vmlinuz-5.3.0-29-generic
Found initrd image: /boot/initrd.img-5.3.0-29-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done

    我删除了我不需要的过多代码，然后复制粘贴了一对内核for循环并更​​改为其中。lowlatencylowlatencyxanmod10-custom

    $ ls -alh /etc/grub.d/
total 136K
drwxr-xr-x   2 root root 4,0K feb 17 00:28 .
drwxr-xr-x 141 root root  12K feb 17 00:31 ..
-rwxr-xr-x   1 root root  11K feb 11 16:57 00_header
-rwxr-xr-x   1 root root 6,2K feb 11 16:57 05_debian_theme
-rwxr-xr-x   1 root root  16K feb 17 00:28 08_xanmod_custom
-rwxr-xr-x   1 root root  37K feb 11 16:57 10_linux_zfs
-rwxr-xr-x   1 root root  13K feb 11 16:57 20_linux_xen
-rwxr-xr-x   1 root root 2,0K feb 28  2016 20_memtest86+
-rwxr-xr-x   1 root root  12K feb 11 16:57 30_os-prober
-rwxr-xr-x   1 root root 1,4K feb 11 16:57 30_uefi-firmware
-rwxr-xr-x   1 root root  214 feb 11 16:57 40_custom
    • 0

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