Han*_*sky 7 root authentication ubuntu sudo unity
这可能是其他密码相关问题的重复，但它有点古怪。
我的Ubuntu 12.10系统中有 3 个帐户（一个标准帐户和两个管理员帐户）。其中一个管理员帐户是我的主要开发帐户，突然在昨天之前，它开始表现得很奇怪（自从最新更新 - 内核和其他：
我使用我的第二个管理员帐户登录并更改了麻烦帐户的密码，但没有运气，将密码恢复为原始值并将帐户设置为自动登录。重新启动，然后，帐户确实登录了。 但是，异常仍然存在：
我检查了我的主文件夹的所有权，没问题。非常感谢一些帮助。
所以总结一下： - 无法通过 lightdm 登录 - sudo、gksudo 和 pkexec 不成功 - su 命令失败 - 如果我提供 sudo 命令的密码不正确，它会检查并返回“密码不正确”，但如果我提供正确的密码，它不会返回任何内容。- 当我自动登录时接受密码钥匙圈。- 当我解锁屏幕时密码被接受。
*Ubuntu 12.10 Unity uname：Linux l502x 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:15:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux*
-------一些日志----------- **
cat /var/log/auth.log | 格雷哈宁
**
Feb 12 03:21:05 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 03:21:05 l502x lightdm: pam_unix(lightdm:auth): auth could not identify password for [hanine]
Feb 12 03:21:05 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 03:21:06 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 03:21:38 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 03:21:43 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 03:23:36 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/usr/bin/passwd hanine
Feb 12 03:23:36 l502x passwd[5502]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 03:23:52 l502x passwd[5502]: pam_unix(passwd:chauthtok): password changed for hanine
Feb 12 03:23:52 l502x passwd[5502]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 03:24:17 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/usr/bin/passwd hanine
Feb 12 03:24:17 l502x passwd[5520]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 03:24:24 l502x passwd[5520]: pam_unix(passwd:chauthtok): password changed for hanine
Feb 12 03:24:24 l502x passwd[5520]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 03:27:51 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/bin/rm .xsession-errors
Feb 12 03:28:42 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/bin/rm .Xauthority
Feb 12 03:29:22 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/bin/mkdir .xsession-errors-old-files
Feb 12 03:29:36 l502x sudo: admin : TTY=pts/0 ; PWD=/home/hanine ; USER=root ; COMMAND=/bin/mv .xsession-errors.old .xsession-errors_OLD1 .xsession-errors-old-files .xsession-errors-old-files/
Feb 12 03:34:15 l502x sudo: admin : TTY=pts/2 ; PWD=/home/hanine ; USER=root ; COMMAND=/usr/bin/sakis3g connect
Feb 12 14:10:08 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:10:15 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:13:23 l502x accounts-daemon: request by system-bus-name::1.66 [gnome-control-center user-accounts pid:3028 uid:1001]: enable automatic login for user 'hanine' (1000)
Feb 12 14:16:54 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:16:54 l502x lightdm: pam_unix(lightdm:auth): auth could not identify password for [hanine]
Feb 12 14:16:55 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:16:55 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:16:57 l502x lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:1 ruser= rhost= user=hanine
Feb 12 14:16:59 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:17:43 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:18:00 l502x lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:0 ruser= rhost= user=hanine
Feb 12 14:18:02 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:18:06 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:18:14 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:18:17 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 14:19:05 l502x lightdm: pam_unix(lightdm-autologin:session): session opened for user hanine by (uid=0)
Feb 12 14:20:04 l502x gnome-keyring-daemon[2173]: keyring alias directory: /home/hanine/.local/share/keyrings
Feb 12 14:50:18 l502x gnome-screensaver-dialog: pam_unix(gnome-screensaver:auth): authentication failure; logname= uid=1000 euid=1000 tty=:0.0 ruser= rhost= user=hanine
Feb 12 14:55:48 l502x sudo: admin : TTY=pts/3 ; PWD=/home/admin ; USER=root ; COMMAND=/bin/chown hanine:hanine /home/hanine/
Feb 12 14:59:22 l502x polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 successfully authenticated as unix-user:admin to gain TEMPORARY authorization for action com.ubuntu-tweak.daemon.clean for system-bus-name::1.138 [/usr/bin/python /usr/bin/ubuntu-tweak] (owned by unix-user:hanine)
Feb 12 15:56:26 l502x polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 FAILED to authenticate to gain authorization for action org.gnome.controlcenter.user-accounts.administration for unix-process:10018:582882 [gnome-control-center user-accounts] (owned by unix-user:hanine)
Feb 12 16:16:41 l502x sudo: admin : TTY=tty2 ; PWD=/home/admin ; USER=root ; COMMAND=/usr/sbin/adduser hanine sudo
Feb 12 16:16:49 l502x sudo: admin : TTY=tty2 ; PWD=/home/admin ; USER=root ; COMMAND=/usr/sbin/adduser hanine admin
Feb 12 16:16:49 l502x gpasswd[17020]: user hanine added by root to group admin
Feb 12 17:11:49 l502x lightdm: pam_unix(lightdm-autologin:session): session closed for user hanine
Feb 12 17:11:49 l502x lightdm: pam_xdg_support(lightdm-autologin:session): Could not delete directory /run/user/hanine
Feb 12 17:23:58 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 17:23:58 l502x lightdm: pam_unix(lightdm:auth): auth could not identify password for [hanine]
Feb 12 17:23:58 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 17:23:59 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 17:24:04 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 17:24:08 l502x lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:0 ruser= rhost= user=hanine
Feb 12 17:24:10 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 17:25:36 l502x lightdm: pam_unix(lightdm-autologin:session): session opened for user hanine by (uid=0)
Feb 12 17:26:29 l502x gnome-keyring-daemon[2147]: keyring alias directory: /home/hanine/.local/share/keyrings
Feb 12 17:42:29 l502x sudo: admin : TTY=pts/2 ; PWD=/home/admin ; USER=root ; COMMAND=/bin/chown -R hanine:hanine /home/hanine
Feb 12 17:47:36 l502x gnome-screensaver-dialog: pam_unix(gnome-screensaver:auth): authentication failure; logname= uid=1000 euid=1000 tty=:0.0 ruser= rhost= user=hanine
Feb 12 17:56:14 l502x su[17624]: pam_unix(su:auth): authentication failure; logname=hanine uid=1000 euid=0 tty=/dev/pts/4 ruser=hanine rhost= user=root
Feb 12 17:56:16 l502x su[17624]: FAILED su for root by hanine
Feb 12 17:56:16 l502x su[17624]: - /dev/pts/4 hanine:root
Feb 12 17:56:57 l502x su[17888]: pam_unix(su:auth): authentication failure; logname=hanine uid=1000 euid=0 tty=/dev/pts/4 ruser=hanine rhost= user=root
Feb 12 17:56:59 l502x su[17888]: FAILED su for root by hanine
Feb 12 17:56:59 l502x su[17888]: - /dev/pts/4 hanine:root
Feb 12 17:59:07 l502x polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 FAILED to authenticate to gain authorization for action org.freedesktop.policykit.exec for unix-process:16882:180734 [bash] (owned by unix-user:hanine)
Feb 12 17:59:07 l502x pkexec[18604]: hanine: Error executing command as another user: Request dismissed [USER=root] [TTY=/dev/pts/4] [CWD=/home/hanine] [COMMAND=/usr/bin/gedit]
Feb 12 18:17:33 l502x lightdm: pam_unix(lightdm-autologin:session): session closed for user hanine
Feb 12 18:17:33 l502x lightdm: pam_xdg_support(lightdm-autologin:session): Could not delete directory /run/user/hanine
Feb 12 18:32:48 l502x lightdm: pam_unix(lightdm-autologin:session): session opened for user hanine by (uid=0)
Feb 12 18:33:39 l502x gnome-keyring-daemon[2142]: keyring alias directory: /home/hanine/.local/share/keyrings
Feb 12 19:05:48 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 19:07:38 l502x sudo: admin : TTY=pts/2 ; PWD=/home/admin ; USER=root ; COMMAND=/usr/bin/passwd hanine
Feb 12 19:07:38 l502x passwd[17421]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 19:07:44 l502x passwd[17421]: pam_unix(passwd:chauthtok): password changed for hanine
Feb 12 19:07:44 l502x passwd[17421]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 19:08:03 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 19:08:13 l502x lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:1 ruser= rhost= user=hanine
Feb 12 19:08:15 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 19:08:18 l502x lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:1 ruser= rhost= user=hanine
Feb 12 19:08:20 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 12 19:09:47 l502x lightdm: pam_unix(lightdm-autologin:session): session opened for user hanine by (uid=0)
Feb 12 19:10:39 l502x gnome-keyring-daemon[2099]: keyring alias directory: /home/hanine/.local/share/keyrings
Feb 12 19:11:27 l502x sudo: pam_unix(sudo:auth): authentication failure; logname=hanine uid=1000 euid=0 tty=/dev/pts/0 ruser=hanine rhost= user=hanine
Feb 12 19:12:31 l502x sudo: admin : TTY=pts/1 ; PWD=/home/admin ; USER=root ; COMMAND=/usr/bin/passwd hanine
Feb 12 19:12:31 l502x passwd[4491]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 19:12:38 l502x passwd[4491]: pam_unix(passwd:chauthtok): password changed for hanine
Feb 12 19:12:38 l502x passwd[4491]: pam_smbpass(passwd:chauthtok): Failed to find entry for user hanine.
Feb 12 22:44:16 l502x sudo: pam_unix(sudo:auth): authentication failure; logname=hanine uid=1000 euid=0 tty=/dev/pts/0 ruser=hanine rhost= user=hanine
Feb 13 13:24:01 l502x lightdm: pam_unix(lightdm-autologin:session): session opened for user hanine by (uid=0)
Feb 13 13:24:52 l502x gnome-keyring-daemon[2061]: keyring alias directory: /home/hanine/.local/share/keyrings
Feb 13 13:40:49 l502x polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 FAILED to authenticate to gain authorization for action org.freedesktop.policykit.exec for unix-process:3554:15127 [bash] (owned by unix-user:hanine)
Feb 13 13:40:49 l502x pkexec[8783]: hanine: Error executing command as another user: Request dismissed [USER=root] [TTY=/dev/pts/0] [CWD=/home/hanine] [COMMAND=/usr/bin/apt-get update]
Feb 13 13:49:13 l502x polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 FAILED to authenticate to gain authorization for action org.freedesktop.policykit.exec for unix-process:10395:133011 [bash] (owned by unix-user:hanine)
Feb 13 13:49:13 l502x pkexec[11324]: hanine: Error executing command as another user: Request dismissed [USER=root] [TTY=/dev/pts/2] [CWD=/home/hanine] [COMMAND=/usr/bin/gedit]
其他日志摘要（登录失败后立即修改的日志）：
-----在 auth.log 中 14:52 和 14:53 之间的输出---
Feb 13 14:52:37 l502x lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Feb 13 14:52:37 l502x lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :2
Feb 13 14:52:37 l502x dbus[959]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.50" (uid=1000 pid=2758 comm="/usr/lib/indicator-session/indicator-session-servi") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.14" (uid=0 pid=1528 comm="/usr/sbin/console-kit-daemon --no-daemon ")
Feb 13 14:52:37 l502x dbus[959]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.114" (uid=1001 pid=17063 comm="/usr/lib/indicator-session/indicator-session-servi") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.14" (uid=0 pid=1528 comm="/usr/sbin/console-kit-daemon --no-daemon ")
Feb 13 14:52:38 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "admin"
Feb 13 14:52:38 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "admin"
Feb 13 14:52:38 l502x dbus[959]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.165" (uid=110 pid=5906 comm="/usr/lib/indicator-session/indicator-session-servi") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.14" (uid=0 pid=1528 comm="/usr/sbin/console-kit-daemon --no-daemon ")
Feb 13 14:52:39 dbus[959]: last message repeated 9 times
Feb 13 14:52:39 l502x dbus[959]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.170" (uid=110 pid=5908 comm="/usr/lib/indicator-datetime/indicator-datetime-ser") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.14" (uid=0 pid=1528 comm="/usr/sbin/console-kit-daemon --no-daemon ")
Feb 13 14:52:40 l502x lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "hanine"
Feb 13 14:53:05 lightdm: last message repeated 2 times
-------输出14:52和14:53之间-----系统日志-
Feb 13 14:39:01 l502x CRON[32704]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -ignore_readdir_race -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)
Feb 13 14:52:34 l502x acpid: client 1468[0:0] has disconnected
Feb 13 14:52:34 l502x acpid: client connected from 16547[0:0]
Feb 13 14:52:34 l502x acpid: 1 client rule loaded
Feb 13 14:52:36 l502x acpid: client connected from 5795[0:0]
Feb 13 14:52:36 l502x acpid: 1 client rule loaded
Feb 13 14:52:38 l502x rtkit-daemon[2221]: Successfully made thread 5947 of process 5947 (n/a) owned by '110' high priority at nice level -11.
Feb 13 14:52:38 l502x rtkit-daemon[2221]: Supervising 7 threads of 3 processes of 3 users.
Feb 13 14:52:39 l502x goa[5965]: goa-daemon version 3.6.0 starting [main.c:112, main()]
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Successfully made thread 5977 of process 5947 (n/a) owned by '110' RT at priority 5.
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Supervising 8 threads of 3 processes of 3 users.
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Successfully made thread 5979 of process 5947 (n/a) owned by '110' RT at priority 5.
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Supervising 9 threads of 3 processes of 3 users.
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Successfully made thread 5985 of process 5985 (n/a) owned by '110' high priority at nice level -11.
Feb 13 14:52:39 l502x rtkit-daemon[2221]: Supervising 10 threads of 4 processes of 3 users.
Feb 13 14:52:39 l502x pulseaudio[5985]: [pulseaudio] pid.c: Daemon already running.
Feb 13 14:53:11 l502x acpid: client 16547[0:0] has disconnected
Feb 13 14:53:11 l502x acpid: client 5795[0:0] has disconnected
Feb 13 14:53:11 l502x acpid: client connected from 16547[0:0]
Feb 13 14:53:11 l502x acpid: 1 client rule loaded
----------------在 14:52 和 14:53 之间在 Xorg.0.log 中输出 --------------- ...
[ 5193.182] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5195.444] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5200.561] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5202.771] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5244.342] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5244.724] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5296.302] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5298.589] (II) XKB: reuse xkmfile /var/lib/xkb/server-2A7E24AED066D4B3B8BAB98261965C829292FC7F.xkm
[ 5336.975] (II) AIGLX: Suspending AIGLX clients for VT switch
----------------在 14:52 和 14:53 之间在 Xorg.1.log 中输出---------------
[ 2466.917] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.2/2-1.2.2:1.0/input/input16/event14"
[ 2466.917] (II) XINPUT: Adding extended input device "DELL DELL USB Laser Mouse" (type: MOUSE, id 12)
[ 2466.918] (II) evdev: DELL DELL USB Laser Mouse: initialized for relative axes.
[ 2466.918] (**) DELL DELL USB Laser Mouse: (accel) keeping acceleration scheme 1
[ 2466.918] (**) DELL DELL USB Laser Mouse: (accel) acceleration profile 0
[ 2466.918] (**) DELL DELL USB Laser Mouse: (accel) acceleration factor: 2.000
[ 2466.918] (**) DELL DELL USB Laser Mouse: (accel) acceleration threshold: 4
[ 5336.975] (II) Open ACPI successful (/var/run/acpid.socket)
[ 5336.975] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 5336.996] (II) intel(0): EDID vendor "AUO", prod id 8940
[ 5336.996] (II) intel(0): Printing DDC gathered Modelines:
[ 5336.996] (II) intel(0): Modeline "1366x768"x0.0 65.10 1366 1382 1390 1398 768 771 775 776 +hsync -vsync (46.6 kHz eP)
[ 5337.061] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 5339.035] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 5373.403] (II) Open ACPI successful (/var/run/acpid.socket)
[ 5373.403] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 5373.416] (II) intel(0): EDID vendor "AUO", prod id 8940
[ 5373.416] (II) intel(0): Printing DDC gathered Modelines:
[ 5373.416] (II) intel(0): Modeline "1366x768"x0.0 65.10 1366 1382 1390 1398 768 771 775 776 +hsync -vsync (46.6 kHz e
问题解决了。
以下是我在问题解决之前执行的操作：
sudo ppa-purge ppa:gnome3-team/gnome3（为了恢复到受支持的 gnome 软件包，如 nautilus 等）
创建目录：/var/lib/samba 并将我自己添加到 samba 密码数据库（sudo mkdir -p /var/lib/samba && sudo smbpasswd -a myusername
sudo pam-auth-update（已经选择了所有身份验证模块，所以我只是点击了）。
故障排除在这里：http : //ubuntuforums.org/showthread.php?t=2115288
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