Запуск сеанса после установки xubuntu-desktop

После установки xubuntu-desktop я удалил его. Теперь, когда мой компьютер переходит в спящий режим и просыпается, я вижу стандартное окно входа в ubuntu. ОК. Я пишу свой пароль, и я вижу черный экран со случайным текстом. Затем, через несколько секунд, я снова вижу окно входа в систему, но теперь сеанс мертв, поэтому, когда я вхожу во все мягкие, закрывается. Это не хорошо. Кроме того, если я нажимаю Ctrl + Alt + F1 и Ctrl + Alt + F7 перед вводом пароля, я вижу сообщение XFCE «Заблокировано сеанс». Что я сделал для решения этой проблемы:

# apt-get purge xfce*
# apt-get remove lightdm ubuntu-desktop unity
# apt-get install lightdm ubuntu-desktop unity

Не помогло. Вот /var/log/pm-suspend.log

Thu Dec 25 15:32:50 EET 2014: performing suspend Thu Dec 25 15:32:56 EET 2014: Awake. Thu Dec 25 15:32:56 EET 2014: Running hooks for resume Running hook /etc/pm/sleep.d/novatel_3g_suspend resume suspend: /etc/pm/sleep.d/novatel_3g_suspend resume suspend: not executable.

Running hook /usr/lib/pm-utils/sleep.d/99video resume suspend: /usr/lib/pm-utils/sleep.d/99video resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend: /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/95led resume suspend: /usr/lib/pm-utils/sleep.d/95led resume suspend: not applicable.

Running hook /usr/lib/pm-utils/sleep.d/95hdparm-apm resume suspend: /usr/lib/pm-utils/sleep.d/95hdparm-apm resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/95anacron resume suspend: /usr/lib/pm-utils/sleep.d/95anacron resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/94cpufreq resume suspend: /usr/lib/pm-utils/sleep.d/94cpufreq resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/90clock resume suspend: /usr/lib/pm-utils/sleep.d/90clock resume suspend: not applicable.

Running hook /usr/lib/pm-utils/sleep.d/75modules resume suspend: Reloaded unloaded modules. /usr/lib/pm-utils/sleep.d/75modules resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/60_wpa_supplicant resume suspend: Failed to connect to non-global ctrl_ifname: (null) error: No such file or directory /usr/lib/pm-utils/sleep.d/60_wpa_supplicant resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/50unload_alx resume suspend: /usr/lib/pm-utils/sleep.d/50unload_alx resume suspend: success.

Running hook /etc/pm/sleep.d/10_unattended-upgrades-hibernate resume suspend: /etc/pm/sleep.d/10_unattended-upgrades-hibernate resume suspend: not executable.

Running hook /etc/pm/sleep.d/10_grub-common resume suspend: /etc/pm/sleep.d/10_grub-common resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/01laptop-mode resume suspend: Laptop mode enabled, not active sh: echo: I/O error SETTING OF KERNEL PARAMETER FAILED: echo ondemand \> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor sh: echo: I/O error SETTING OF KERNEL PARAMETER FAILED: echo ondemand \> /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor /usr/lib/pm-utils/sleep.d/01laptop-mode resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/00powersave resume suspend: Error for wireless request «Set Power Management» (8B2C) : SET failed on device mon0 ; Invalid argument. Failed. Error for wireless request «Set Power Management» (8B2C) : SET failed on device wlan0 ; Invalid argument. Failed. /usr/lib/pm-utils/sleep.d/00powersave resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/00logging resume suspend: /usr/lib/pm-utils/sleep.d/00logging resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/000record-status resume suspend: /usr/lib/pm-utils/sleep.d/000record-status resume suspend: success.

Running hook /usr/lib/pm-utils/sleep.d/000kernel-change resume suspend: /usr/lib/pm-utils/sleep.d/000kernel-change resume suspend: success.

Thu Dec 25 15:32:57 EET 2014: Finished.

Помогите мне, пожалуйста! Спасибо.