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楼主进了一台Thinkpad T450s，触控板支持4点触控，安装了ubuntu14.04 LTS之后，触控板只剩下双指滑动了，略有不爽，各种google，百度。

真找到办法了。

首先得知了touchegg，但是各种安装不上，折腾的我心力焦悴，最后偶然在知乎上有一位伙伴说了他的电脑用xSwipe搞定了。

于是转向xSwipe，在开源项目网站上GitHub上找到了这神器。 传送门，或者复制地址：https://github.com/iberianpig/xSwipe  到地址栏打开，可能打开得很慢，楼主备份了要下载的文件，下载地址放在文章末尾了。

官方的文档是英文版，虽然推荐读者阅读原版文章，但是为了照顾英文不好的小伙伴，我找到了一片中文博客(点我访问)，或者复制地址：http://loliko.me/zai-linuxzhong-tian-jia-hong-mo-ban-shou-shi/      到地址栏打开

下面是GitHub上的说明文档：

xSwipe

xSwipe is multitouch gesture recognizer. This script make your linux PC able to recognize swipes like a Macbook.

Usage

Before running the script, you must first do some preparations.

1. Download xSwipe
2. Install X11::GUITest
3. Enable SHMConfig

1. Download xSwipe

Type below code, download xSwipe from github

$ cd ~
$ wget https://github.com/iberianpig/xSwipe/archive/master.zip
$ unzip master.zip

2. Install X11::GUITest

To install libx11-guitest-perl from synaptic package manager Or run the script on the terminal run as

$ sudo apt-get install libx11-guitest-perl

NOTE: If using Ubuntu14.04, or later

Install older version synaptics driver that is compatible with xSwipe.

$ sudo apt-get install -y git build-essential libevdev-dev autoconf automake libmtdev-dev xorg-dev xutils-dev libtool
$ sudo apt-get remove -y xserver-xorg-input-synaptics
$ git clone https://github.com/Chosko/xserver-xorg-input-synaptics.git
$ cd xserver-xorg-input-synaptics
$ ./autogen.sh
$ ./configure --exec_prefix=/usr
$ make
$ sudo make install

3. Enable SHMConfig

Open /etc/X11/xorg.conf.d/50-synaptics.conf with your favorite text editor and edit it to enable SHMConfig

$ sudo gedit /etc/X11/xorg.conf.d/50-synaptics.conf

NOTE:You will need to create the /etc/X11/xorg.conf.d/ directory and create 50-synaptics.conf if it doesn‘t exist yet. $ sudo mkdir /etc/X11/xorg.conf.d/

/etc/X11/xorg.conf.d/50-synaptics.conf

Section "InputClass"
Identifier "evdev touchpad catchall"
Driver "synaptics"
MatchDevicePath "/dev/input/event*"
MatchIsTouchpad "on"
Option "Protocol" "event"
Option "SHMConfig" "on"
EndSection

To reflect SHMConfig, restart your session.

That‘s it for preparation.

Run xSwipe

To run xSwipe, type below code on terminal.

$ perl ~/xSwipe-master/xSwipe.pl

Note:You should run xSwipe.pl in same directory as "eventKey.cfg" .

You can use "swipe" with 3 or 4 fingers, they can call an event. Additionally, some gestures are avilable.

• edge-swipe : swipe with 2 fingers from outside edge(need to enable with option).
• long-press : hold pressure for 0.5 seconds with 3 or 4 fingers.

Option

• -d RATE : RATE is sensitivity to swipe.Default value is 1. Shorten swipe-length by half (e.g.,$ perl xSwipe.pl -d 0.5)
• -m INTERVAL : INTERVAL is how often synclient monitor changes to the touchpad state. Default value is 10(ms). Set 50ms as monitoring-span. (e.g.,$ perl xSwipe.pl -m 50)
• -n : Natural scroll like Macbook, use "/nScroll/eventKey.cfg".
• -e : Enable edge-swipe

Customize

You can customize the settings for gestues to edit eventKey.cfg. Please check this article, "How to customize gesture".

Bindable gestures

• 3/4/5 fingers swipe
• 2/3/4/5 fingers long-press
• 2/3/4 fingers edge-swipe
  • 2fingers edge-swipe: only swipe-left/right from right/left edge
  • 3fingers edge-swipe: only swipe-down from top egde

Example shortcut keys

• go back/forward on browser (Alt+Left, Alt+Right)
• open/close a tab on browser (Ctrl+t/Ctrl+w)
• move tabs (Ctrl+Tab, Ctrl+Shift+Tab)
• move workspaces (Alt+Ctrl+Lert, Alt+Ctrl+Right, Alt+Ctrl+Up, Alt+Ctrl+Down)
• move a window (Alt+F7)
• open launcher (Alt+F8)
• open a terminal (Ctrl+Alt+t)
• close a window (Alt+F4)

Please let me know if you have any questions about this program.

我按照说明文档安装xSwipe之后，进行到最后一步  

perl ~/xSwipe-master/xSwipe.pl

遇到了错误提示
"Can‘t locate Smart/Comments.pm in @INC (you may need to install the Smart::Comments module) (@INC contains: /etc/perl /usr/local/lib/perl/5.18.2 /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl .) at /home/jackson/xSwipe-master/xSwipe.pl line 15."

真是蛋疼，每到最后关头就出问题。百度无果，最后还是google给了我答案，原文在这儿：https://forum.teksyndicate.com/t/perl-smart-comments/86880

做法就是，在终端下键入下列命令
sudo cpan -i Smart::Comments

此时要正常联网，楼主用代理模式上的网，各种错误，不知道具体原因在哪儿，最后用手机开wifi给电脑用，心疼啊(别问我为什么没wifi，学校不给大一新生校园网)
不出意外得话，应该在执行完执之前那条命令之后，就搞定了
使用

perl ~/xSwipe-master/xSwipe.pl

应该就可以开启触控板手势，目前我的电脑能实现三指滑动切换工作区，其它还没设置。
若有其它问题，可以在评论区留言，力所能及之处定出手相助。

xSwipe下载：http://pan.baidu.com/s/1gesqHm7
下载之后请先查看README.md文件，在xSwipe得其中一个子文件夹内。

Ubuntu下触控板手势调节软件xSwipe

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原文地址：http://www.cnblogs.com/hushuangpu/p/5296075.html