双指滚动不适用于ubuntu 17.10

我最近升级到ubuntu 17.10 ,从那以后我不能做两个手指滚动 ,只有边缘滚动 。 有关如何使两个手指滚动再次工作的任何建议? 我使用的是联想ThinkPad 450s


按照@ Hi-Angel的要求输出xinput list-props $(xinput list | perl -ne '/touchpad.*\bid=(\d*)/i && print $1')

 Device 'SynPS/2 Synaptics TouchPad': Device Enabled (141): 1 Coordinate Transformation Matrix (143): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000 libinput Tapping Enabled (276): 1 libinput Tapping Enabled Default (277): 0 libinput Tapping Drag Enabled (278): 1 libinput Tapping Drag Enabled Default (279): 1 libinput Tapping Drag Lock Enabled (280): 0 libinput Tapping Drag Lock Enabled Default (281): 0 libinput Tapping Button Mapping Enabled (282): 1, 0 libinput Tapping Button Mapping Default (283): 1, 0 libinput Accel Speed (284): 0.600000 libinput Accel Speed Default (285): 0.000000 libinput Natural Scrolling Enabled (286): 1 libinput Natural Scrolling Enabled Default (287): 0 libinput Send Events Modes Available (261): 1, 1 libinput Send Events Mode Enabled (262): 0, 0 libinput Send Events Mode Enabled Default (263): 0, 0 libinput Left Handed Enabled (288): 0 libinput Left Handed Enabled Default (289): 0 libinput Scroll Methods Available (290): 1, 1, 0 libinput Scroll Method Enabled (291): 0, 1, 0 libinput Scroll Method Enabled Default (292): 1, 0, 0 libinput Click Methods Available (293): 1, 1 libinput Click Method Enabled (294): 1, 0 libinput Click Method Enabled Default (295): 1, 0 libinput Middle Emulation Enabled (296): 0 libinput Middle Emulation Enabled Default (297): 0 libinput Disable While Typing Enabled (298): 1 libinput Disable While Typing Enabled Default (299): 1 Device Node (264): "/dev/input/event5" Device Product ID (265): 2, 7 libinput Drag Lock Buttons (300):  libinput Horizontal Scroll Enabled (301): 1 

@ hpotter40的答案对我有用: https ://askubuntu.com/a/971735/101985

 sudo modprobe -r psmouse sudo modprobe psmouse 

这取自该错误报告的第16条评论: https : //bugs.launchpad.net/ubuntu/+source/linux/+bug/1722478/comments/16

您可以通过单击System Settings > Mouse & Touchpad启用两个手指滚动 。 你会看到这样的窗口 在此处输入图像描述

您可以根据自己的喜好(联合国)选中复选框。