因為我想在 Gnome（Fedora 25、Xorg）下運行 3 指（甚至 4 指）手勢，所以我安裝了 libinput 驅動程式和 libinput-gestures (https://github.com/bulletmark/libinput-gestures）。
當嘗試調試為什麼 3 指滑動不起作用時，我注意到它libinput-gestures -r沒有顯示任何超過兩根手指完成的操作。
有人知道如何讓它發揮作用嗎？
觸控板確實支援至少 3 個手指的多點觸控（我經常在 Windows 下使用它）。我使用的系統：戴爾 XPS 15 L501x
x輸入輸出：
$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=13 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Video Bus id=8 [slave keyboard (3)]
↳ Power Button id=9 [slave keyboard (3)]
↳ Sleep Button id=10 [slave keyboard (3)]
↳ Laptop_Integrated_Webcam_2HDM id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
↳ Dell WMI hotkeys id=14 [slave keyboard (3)]
特性：
$ xinput list-props 13
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (152): 1
Coordinate Transformation Matrix (154): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (290): 0
libinput Tapping Enabled Default (291): 0
libinput Tapping Drag Enabled (292): 1
libinput Tapping Drag Enabled Default (293): 1
libinput Tapping Drag Lock Enabled (294): 0
libinput Tapping Drag Lock Enabled Default (295): 0
libinput Tapping Button Mapping Enabled (296): 1, 0
libinput Tapping Button Mapping Default (297): 1, 0
libinput Accel Speed (298): 0.000000
libinput Accel Speed Default (299): 0.000000
libinput Natural Scrolling Enabled (300): 1
libinput Natural Scrolling Enabled Default (301): 0
libinput Send Events Modes Available (275): 1, 1
libinput Send Events Mode Enabled (276): 0, 0
libinput Send Events Mode Enabled Default (277): 0, 0
libinput Left Handed Enabled (302): 0
libinput Left Handed Enabled Default (303): 0
libinput Scroll Methods Available (304): 1, 1, 0
libinput Scroll Method Enabled (305): 1, 0, 0
libinput Scroll Method Enabled Default (306): 1, 0, 0
libinput Disable While Typing Enabled (307): 1
libinput Disable While Typing Enabled Default (308): 1
Device Node (278): "/dev/input/event5"
Device Product ID (279): 2, 7
libinput Drag Lock Buttons (309): <no items>
libinput Horizontal Scroll Enabled (310): 1