在执行windows远程连接ubuntu操作(安装 Xfce 和 Xrdp )后，ubuntu在登录后无法进入桌面。
解决方法如下：
1.Ctrl+Alt+F1(或者F2-F8)进入命令行界面，登录账户
2.卸载Xwindows软件
sudo apt-get autoremove ubuntu-desktop
3.安装所有依赖软件
sudo apt-getupdate
sudo apt-get install ubuntu-desktop
4.重启 reboot
执行重装ubuntu-desktop前，可优先卸载引起该问题的软件
执行sudo apt install ubuntu-desktop时报错Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
ubuntu-desktop : Depends: nautilus but it is not going to be installed
Recommends: libreoffice-calc but it is not going to be installed
Recommends: libreoffice-gnome but it is not going to be installed
Recommends: libreoffice-impress but it is not going to be installed
Recommends: libreoffice-math but it is not going to be installed
Recommends: libreoffice-ogltrans but it is not going to be installed
Recommends: libreoffice-writer but it is not going to be installed
Recommends: nautilus-share but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
解决方法1：
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ bionic main universe multiverse restricted"
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ bionic-updates main universe multiverse restricted"
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ bionic-security main universe multiverse restricted"
sudo apt-get upgrade
sudo apt-get install ubuntu-desktop
解决方法2：
First runsudo apt install -f
First runsudo apt --fix-broken install
Runsudo apt install --reinstall ubuntu-desktop
Runsudo dpkg --configure -a && sudo apt autoremove -y && sudo apt autoclean && sudo apt remove && sudo apt clean && sudo apt update && sudo apt install -f && sudo apt full-upgrade -y
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最终问题未解决，重装系统
期待更好的解决办法
来源：oschina
链接：https://my.oschina.net/u/3732258/blog/4277972