I have installed latest version of KDE, so I have to use the workaround post here
Install bzr via Synaptic Package Manager
$ bzr get lp:~ubuntu-core-dev/update-manager/maverick
$ cd maverick/DistUpgrade
$ sudo ./dist-upgrade.py
I saw a warning message on screen
WARNING: Failed to read mirror file
Several minutes later, another error
"Error authenticating some packages"
There is a bug748353 for this.
Btw, I have to create a file /etc/apt/apt.conf to work behind proxy.
Follow up:
switch to gnome, uninstall kubuntu-desktop, and upgrade via "update-manager", now the upgrade is in progress.
KDE升级遇到的问题及解决方法
用户在安装了KDE的最新版本后遇到了升级问题,包括读取镜像文件失败和部分软件包验证错误。通过创建/etc/apt/apt.conf文件以在代理服务器后工作,并切换到GNOME桌面环境,卸载Kubuntu-desktop后使用update-manager进行升级,问题得到了解决。
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