我在 ASUS UX305F 上将 Xubuntu 14.04 升级到 14.10，触摸板上的光标不再移动，只有左键单击功能有效。
它仍然可以被认可：
$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB Receiver id=10 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=14 [slave pointer (2)]
并且它已启用：
$ xinput list-props 14
Device 'ETPS/2 Elantech Touchpad':
Device Enabled (136): 1
Coordinate Transformation Matrix (138): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (267): 0
Device Accel Constant Deceleration (268): 1.000000
Device Accel Adaptive Deceleration (269): 1.000000
Device Accel Velocity Scaling (270): 10.000000
Device Product ID (254): 2, 14
Device Node (255): "/dev/input/event7"
Evdev Axis Inversion (271): 0, 0
Evdev Axis Calibration (272): <no items>
Evdev Axes Swap (273): 0
Axis Labels (274): "Abs MT Position X" (294), "Abs MT Position Y" (295), "Abs MT Pressure" (296), "Abs Tool Width" (292), "Abs MT Touch Major" (293), "None" (0), "None" (0), "None" (0)
Button Labels (275): "Button Left" (139), "Button Unknown" (257), "Button Unknown" (257), "Button Wheel Up" (142), "Button Wheel Down" (143)
Evdev Scrolling Distance (276): 0, 0, 0
Evdev Middle Button Emulation (277): 0
Evdev Middle Button Timeout (278): 50
Evdev Third Button Emulation (279): 0
Evdev Third Button Emulation Timeout (280): 1000
Evdev Third Button Emulation Button (281): 3
Evdev Third Button Emulation Threshold (282): 20
Evdev Wheel Emulation (283): 0
Evdev Wheel Emulation Axes (284): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (285): 10
Evdev Wheel Emulation Timeout (286): 200
Evdev Wheel Emulation Button (287): 4
Evdev Drag Lock Buttons (288): 0
我不知道安装了什么驱动程序，但我尝试安装 synaptics 驱动程序，并且 apt-get 尝试卸载一些 xorg 包（xorg、xserver-xorg-core-lts-utopic、xserver-xorg-input-evdev-lts-utopic、xserver-xorg-lts-utopic、xserver-xorg-video-intel-lts-utopic、xubuntu-desktop）并安装 xserver-xorg-core。
这让我认为安装了一些不均匀的版本，但即使我接受 apt-get 的解决方案，它也会失败，并抱怨：
E：无法纠正问题，您持有破损的包裹。
E: 无法锁定下载目录
如果我能让触摸板正常工作，则无需安装 Synaptics，但我认为我需要安装。有什么想法吗？