更新后，会下载并安装最新的内核。但它们不会出现在 grub 内核列表中。取而代之的是一些已被删除的旧内核。
我尝试过网上的很多建议，但都没有成功。
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-6.2.0-24-generic
Found initrd image: /boot/initrd.img-6.2.0-24-generic
Found linux image: /boot/vmlinuz-6.2.0-20-generic
Found initrd image: /boot/initrd.img-6.2.0-20-generic
Found memtest86+ 64bit EFI image: /boot/memtest86+x64.efi
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Found Ubuntu 23.04 (23.04) on /dev/nvme0n1p3
Adding boot menu entry for UEFI Firmware Settings ...
ls -l /boot/
total 197696
-rw-r--r-- 1 root root 276283 Apr 6 08:33 config-6.2.0-20-generic
-rw-r--r-- 1 root root 275984 Jun 16 11:07 config-6.2.0-24-generic
drwxr-xr-x 3 root root 4096 Jan 1 1970 efi
drwxr-xr-x 5 root root 4096 Jun 29 17:45 grub
lrwxrwxrwx 1 root root 27 Jun 28 16:31 initrd.img -> initrd.img-6.2.0-24-generic
-rw-r--r-- 1 root root 77057438 Jun 17 13:05 initrd.img-6.2.0-20-generic
-rw-r--r-- 1 root root 79567659 Jun 28 16:31 initrd.img-6.2.0-24-generic
lrwxrwxrwx 1 root root 27 Jun 29 15:49 initrd.img.old -> initrd.img-6.2.0-20-generic
-rw-r--r-- 1 root root 138712 Feb 11 12:16 memtest86+ia32.bin
-rw-r--r-- 1 root root 139776 Feb 11 12:16 memtest86+ia32.efi
-rw-r--r-- 1 root root 144312 Feb 11 12:16 memtest86+x64.bin
-rw-r--r-- 1 root root 145408 Feb 11 12:16 memtest86+x64.efi
-rw------- 1 root root 8146863 Apr 6 08:33 System.map-6.2.0-20-generic
-rw------- 1 root root 8152253 Jun 16 11:07 System.map-6.2.0-24-generic
lrwxrwxrwx 1 root root 24 Jun 28 16:31 vmlinuz -> vmlinuz-6.2.0-24-generic
-rw------- 1 root root 14524456 Apr 6 08:35 vmlinuz-6.2.0-20-generic
-rw------- 1 root root 13854856 Jun 16 12:43 vmlinuz-6.2.0-24-generic
lrwxrwxrwx 1 root root 24 Jun 29 15:49 vmlinuz.old -> vmlinuz-6.2.0-20-generic
The list from grub is given below.
[enter image description here][1]
[1]: https://i.stack.imgur.com/aOj38.jpg
If you check from the list in /boot, the "oracle" and "lowlatency" kernel have been removed. Yet they still appear in the grub list. The "6.2.0-24-generic" kernel is however missing in grub even though it's in /boot and is installed.