不能登录ubuntu，但可以ssh到它
/var/log/auth.log的最后几行代码：
Jan 9 22:59:57 miranda-OptiPlex-790 lightdm: PAM adding faulty module: pam_kwallet5.so
Jan 9 22:59:57 miranda-OptiPlex-790 lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "miranda"
Jan 9 23:00:23 miranda-OptiPlex-790 dbus[807]: [system] Failed to activate service 'org.bluez': timed out我试图在系统环境中添加一个新变量。我在/etc/enviroment中添加了一行。现在我已经向机器扔去，把线移开了。现在看起来是这样的：
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"但我还是不能登录。
客服会议没有问题。
我的问题类似于这个问题：https://serverfault.com/questions/380917/cant-log-in-locally-but-ssh-works
他最后重新安装了操作系统，我希望还有一种方法可以拯救我的.
还有另一篇关于类似问题的文章：https://www.linuxquestions.org/questions/linux-general-1/can%27t-login-over-console-but-can-ssh-in-740310/
但是到解决方案的链接不再起作用了。
在这里尝试过的建议：无法登录锁定的Ubuntu14.04会话统一
在重新安装了一堆东西之后：
apt-get install --reinstall kwalletmanager
apt-get install libpam-kwallet4 libpam-kwallet5
service lightdm restart新的auth.log显示：
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_unix(lightdm:session): session opened for user miranda by (uid=0)
Jan 10 00:05:10 miranda-OptiPlex-790 systemd-logind[796]: New session c32 of user miranda.
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm:session): pam_kwallet: pam_sm_open_session
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm:session): pam_kwallet: final socket path: /tmp/kwallet_miranda.socket
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm:session): pam_kwallet: Impossible to write walletKey to walletPipe
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_kwallet5(lightdm:session): pam_kwallet5: pam_sm_open_session
Jan 10 00:05:10 miranda-OptiPlex-790 lightdm: pam_kwallet5(lightdm:session): pam_kwallet5: final socket path: /tmp/kwallet5_miranda.socket
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm-greeter:setcred): (null): pam_sm_setcred
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet5(lightdm-greeter:setcred): (null): pam_sm_setcred
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jan 10 00:05:11 miranda-OptiPlex-790 systemd-logind[796]: New session c33 of user lightdm.
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm-greeter:session): (null): pam_sm_open_session
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet(lightdm-greeter:session): pam_kwallet: open_session called without kwallet_key
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet5(lightdm-greeter:session): (null): pam_sm_open_session
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_kwallet5(lightdm-greeter:session): pam_kwallet5: open_session called without kwallet5_key
Jan 10 00:05:11 miranda-OptiPlex-790 lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "miranda"
Jan 10 00:05:22 miranda-OptiPlex-790 dbus[807]: [system] Failed to activate service 'org.bluez': timed out我不知道如何更改lightdm配置
root@miranda-OptiPlex-790:/etc/lightdm/lightdm.conf.d# ls
root@miranda-OptiPlex-790:/etc/lightdm/lightdm.conf.d# cd ..
root@miranda-OptiPlex-790:/etc/lightdm# ls
lightdm.conf.d users.conf
root@miranda-OptiPlex-790:/etc/lightdm# cat users.conf
#
# User accounts configuration
#
# NOTE: If you have AccountsService installed on your system, then LightDM will
# use this instead and these settings will be ignored
#
# minimum-uid = Minimum UID required to be shown in greeter
# hidden-users = Users that are not shown to the user
# hidden-shells = Shells that indicate a user cannot login
#
[UserList]
minimum-uid=500
hidden-users=nobody nobody4 noaccess
hidden-shells=/bin/false /usr/sbin/nologin编辑/etc/pam.d/lightdm并从该行中删除nopasswdlogin：
auth sufficient pam_succeed_if.so user ingroup nopasswdlogin回答 1
Ask Ubuntu用户
发布于 2018-01-10 05:08:37
最后，这里的方法节省了时间：https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/964607
我在googled上搜索了一下，找出了如何做到这一点：https://askubuntu.com/questions/300682/what-is-the-xauthority-file
具体步骤：
当我在登录屏幕上时，Ctrl+Alt+F1。
chown miranda:miranda .XauthorityCtrl+Alt+F7
一些解释：
将miranda更改为用户名。
Ctrl+Alt+F1 to F6是getty/agetty程序提供的虚拟控制台。Ctrl+Alt+F7是运行X服务器的控制台。https://askubuntu.com/questions/157617/reverting-from-ctrl-alt-f1
使用ls -la .Xauthority确认这是否是问题所在。
https://askubuntu.com/questions/994127
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