12.04 -更新管理器-失败-上次更新不完整

Question

定期更新失败的消息如下：

以前的安装还没有完成，安装可能因为相应软件包中的错误而失败，或者是以不友好的方式取消了安装。在安装或删除任何进一步的软件之前，您必须对此进行修复。

根据我发现的提示，我做了sudo apt-get update和sudo apt-get upgrade。后者以下列方式结束：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages have been kept back:
linux-generic-pae linux-headers-generic-pae linux-image-generic-pae
The following packages will be upgraded:
apport apt-xapian-index aptdaemon ca-certificates firefox firefox-globalmenu
firefox-locale-en libsnmp-base libsnmp15 libsvn1 linux-firmware
linux-libc-dev mime-support openssh-client python-httplib2 python-keyring
ssh-askpass-gnome tzdata ubuntu-system-service unattended-upgrades
20 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
E: The package index files are corrupted. No Filename: field for package tzdata.

我不知道下一步该怎么办。

Answer 1

删除一些文件

sudo rm -r /var/lib/apt/lists/*
sudo apt-get clean
sudo apt-get update

强制安装tzdata通过

sudo apt-get install --reinstall tzdata

在那之后

sudo apt-get dist-upgrade