自上次尝试升级以来grub-pc和grub-efi-amd64-签名 作为基础更新的一部分，更新未能完成。输出如下：
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up grub-pc (2.02-2ubuntu8.12) ...
dpkg: error processing package grub-pc (--configure):
installed grub-pc package post-installation script subprocess returned error exit status 10
dpkg: dependency problems prevent configuration of grub-efi-amd64-signed:
grub-efi-amd64-signed depends on grub-efi-amd64 | grub-pc; however:
Package grub-efi-amd64 is not installed.
Package grub-pc is not configured yet.
dpkg: error processing package grub-efi-amd64-signed (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
grub-pc
grub-efi-amd64-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)
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我尝试手动安装 grub-efi-amd64 但也失败了。