kubuntu 14.04 Логин KDE после обновления

У меня серьезная проблема - несколько часов назад я обновил свою машину kubunt 14.04 - я немного задержал это обновление, так как не хотел перезагружать свою машину. Поскольку KDE Startmenu больше не появлялся, когда я щелкнул, я решил обновить и перезагрузить его.

Теперь я больше не могу войти в KDE! Симптомы:

Да, я посмотрел и пробовал все подсказки относительно .Xauthority и т. д. Я переименовал его, я изменил разрешение и т. д. ничего не помогает. Ниже я публикую /varlog/lightdm/lightdm.log после 1 входа в систему, попробуйте с надежным паролем, потому что из того, что я вижу там, я не получаю больше подсказок от google, stackexchange или askubuntu. Может быть, это связано с считывателем отпечатков пальцев или другим оборудованием.

Это моя основная рабочая машина, поэтому любые быстрые советы или подсказки очень ценятся!

~$ sudo cat /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.10.6, UID=0 PID=1311
[+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/40-kde-plasma.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/40-lightdm-kde-greeter.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-greeter-wrapper.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf
[+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Registered seat module xlocal
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Registered seat module surfaceflinger
[+0.00s] DEBUG: Adding default seat
[+0.00s] DEBUG: Seat: Starting
[+0.00s] DEBUG: Seat: Creating greeter session
[+0.00s] DEBUG: Seat: Creating display server of type x
[+0.00s] DEBUG: Deactivating Plymouth
[+0.03s] DEBUG: Using VT 7
[+0.03s] DEBUG: Seat: Starting local X display on VT 7
[+0.03s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
[+0.03s] DEBUG: DisplayServer x-0: Writing X server authority to /var/run/lightdm/root/:0
[+0.03s] DEBUG: DisplayServer x-0: Launching X Server
[+0.03s] DEBUG: Launching process 1323: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.03s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0
[+0.03s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.03s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.05s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.05s] DEBUG: User /org/freedesktop/Accounts/User1001 added
[+0.08s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+0.18s] DEBUG: Got signal 10 from process 1323
[+0.18s] DEBUG: DisplayServer x-0: Got signal from X server :0
[+0.18s] DEBUG: DisplayServer x-0: Connecting to XServer :0
[+0.18s] DEBUG: Quitting Plymouth; retaining splash
[+0.20s] DEBUG: Seat: Display server ready, starting session authentication
[+0.20s] DEBUG: Session pid=1345: Started with service 'lightdm-greeter', username 'lightdm'
[+0.21s] DEBUG: Session pid=1345: Authentication complete with return value 0: Success
[+0.21s] DEBUG: Seat: Session authenticated, running command
[+0.21s] DEBUG: Session pid=1345: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-kde-greeter
[+0.21s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+0.21s] DEBUG: Session pid=1345: Logging to /var/log/lightdm/x-0-greeter.log
[+0.22s] DEBUG: Activating VT 7
[+0.22s] DEBUG: Activating login1 session c1
[+1.37s] DEBUG: Session pid=1345: Greeter connected version=1.10.6
[+137.95s] DEBUG: Session pid=1345: Greeter start authentication for ursin
[+137.95s] DEBUG: Session pid=1811: Started with service 'lightdm', username 'ursin'
[+138.97s] DEBUG: Session pid=1811: Got 1 message(s) from PAM
[+138.97s] DEBUG: Session pid=1345: Prompt greeter with 1 message(s)
[+138.97s] DEBUG: Session pid=1345: Continue authentication
[+176.29s] DEBUG: User /org/freedesktop/Accounts/User1000 changed
[+241.69s] DEBUG: User /org/freedesktop/Accounts/User1000 changed

, если я делаю больше, чем 1 login try Я также получаю сообщения типа

[+2046.48s] DEBUG: Session pid=1345: Greeter start authentication for ursin
[+2046.48s] DEBUG: Session pid=1811: Sending SIGTERM
[+2046.48s] DEBUG: Session pid=2001: Started with service 'lightdm', username 'ursin'
[+2046.48s] DEBUG: Session pid=1811: Terminated with signal 15
[+2046.48s] DEBUG: Session: Failed during authentication
[+2046.48s] DEBUG: Seat: Session stopped

и повторяется тогда бесконечно ...