新手求助，ubuntu升级后无法进入桌面。

[iceecream]

软件更新器提示更新，于是我就更新
提示重启，恰好我要出去，顺手就点了，回来停留在输入密码阶段，
输入密码，屏幕闪动，叮咚2下又回到输入密码界面。
按照网上文章，一顿乱搞
卸载了gdm，又装上，卸载了鹦鹉螺，又装上
现在是这样一个情况
能够起动到输入密码的界面。一登陆，一个大背景，屏幕左上角出现一个终端窗口，能进行各种操作，就是无法进入桌面

解决之道：
sudo apt-get install ubuntu-desktop

[iceecream]

var log Xorg.0的日志
(**) Power Button: always reports core events
(**) Power Button: Device: "/dev/input/event1"
(II) Power Button: Found keys
(II) Power Button: Configuring as keyboard
(II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) XKB: reuse xkmfile /var/lib/xkb/server-D378AD8F86E560F712A83EE36E4E5E92C595B9BD.xkm
(II) config/udev: Adding input device Power Button (/dev/input/event0)
(**) Power Button: Applying InputClass "evdev keyboard catchall"
(**) Power Button: always reports core events
(**) Power Button: Device: "/dev/input/event0"
(II) Power Button: Found keys
(II) Power Button: Configuring as keyboard
(II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) config/udev: Adding input device Dell Dell USB Keyboard (/dev/input/event3)
(**) Dell Dell USB Keyboard: Applying InputClass "evdev keyboard catchall"
(**) Dell Dell USB Keyboard: always reports core events
(**) Dell Dell USB Keyboard: Device: "/dev/input/event3"
(II) Dell Dell USB Keyboard: Found keys
(II) Dell Dell USB Keyboard: Configuring as keyboard
(II) XINPUT: Adding extended input device "Dell Dell USB Keyboard" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) config/udev: Adding input device Dell Dell USB Keyboard (/dev/input/event4)
(**) Dell Dell USB Keyboard: Applying InputClass "evdev keyboard catchall"
(**) Dell Dell USB Keyboard: always reports core events
(**) Dell Dell USB Keyboard: Device: "/dev/input/event4"
(II) Dell Dell USB Keyboard: Found absolute axes
(II) Dell Dell USB Keyboard: Found keys
(II) Dell Dell USB Keyboard: Configuring as mouse
(II) Dell Dell USB Keyboard: Configuring as keyboard
(II) XINPUT: Adding extended input device "Dell Dell USB Keyboard" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) Dell Dell USB Keyboard: initialized for absolute axes.
(II) config/udev: Adding input device Logitech USB Receiver (/dev/input/event5)
(**) Logitech USB Receiver: Applying InputClass "evdev keyboard catchall"
(**) Logitech USB Receiver: always reports core events
(**) Logitech USB Receiver: Device: "/dev/input/event5"
(II) Logitech USB Receiver: Found keys
(II) Logitech USB Receiver: Configuring as keyboard
(II) XINPUT: Adding extended input device "Logitech USB Receiver" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) config/udev: Adding input device Logitech USB Receiver (/dev/input/event6)
(**) Logitech USB Receiver: Applying InputClass "evdev pointer catchall"
(**) Logitech USB Receiver: Applying InputClass "evdev keyboard catchall"
(**) Logitech USB Receiver: always reports core events
(**) Logitech USB Receiver: Device: "/dev/input/event6"
(II) Logitech USB Receiver: Found 20 mouse buttons
(II) Logitech USB Receiver: Found scroll wheel(s)
(II) Logitech USB Receiver: Found relative axes
(II) Logitech USB Receiver: Found x and y relative axes
(II) Logitech USB Receiver: Found absolute axes
(II) Logitech USB Receiver: Found keys
(II) Logitech USB Receiver: Configuring as mouse
(II) Logitech USB Receiver: Configuring as keyboard
(**) Logitech USB Receiver: YAxisMapping: buttons 4 and 5
(**) Logitech USB Receiver: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(II) XINPUT: Adding extended input device "Logitech USB Receiver" (type: KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "evdev"
(**) Option "xkb_layout" "us"
(II) Logitech USB Receiver: initialized for relative axes.
(WW) Logitech USB Receiver: ignoring absolute axes.
(II) config/udev: Adding input device Logitech USB Receiver (/dev/input/mouse1)
(II) No input driver/identifier specified (ignoring)
(II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event7)
(II) No input driver/identifier specified (ignoring)
(II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/event2)
(**) Macintosh mouse button emulation: Applying InputClass "evdev pointer catchall"
(**) Macintosh mouse button emulation: always reports core events
(**) Macintosh mouse button emulation: Device: "/dev/input/event2"
(II) Macintosh mouse button emulation: Found 3 mouse buttons
(II) Macintosh mouse button emulation: Found relative axes
(II) Macintosh mouse button emulation: Found x and y relative axes
(II) Macintosh mouse button emulation: Configuring as mouse
(**) Macintosh mouse button emulation: YAxisMapping: buttons 4 and 5
(**) Macintosh mouse button emulation: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(II) XINPUT: Adding extended input device "Macintosh mouse button emulation" (type: MOUSE)
(II) Macintosh mouse button emulation: initialized for relative axes.
(II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/mouse0)
(II) No input driver/identifier specified (ignoring)

[月下叹逍遥]

无EE，显卡无误……

[iceecream]

是啊，楼上教我怎么进入桌面啊，现在就是一个登陆的背景加一个小终端窗口
进入恢复模式，startx 也是一个鼠标的光标在那里，全黑的界面。

[iceecream]

SOS啊。各位老师指点一下嘛