我已经安装了Ubuntu 18.04。Lenovo Ideapad L340点击触摸板无法正常工作。大多数时候，它工作得很好，但有时它不起作用，我必须再次点击（这不是太多，可能几个小时内 5 或 6 次）。我尝试更改触摸板中的某些设置，看看它是否会影响问题。例如， 的输出中有两个选项xinput list-props。第一个是libinput Tapping Enabled (273): 1，第二个是：libinput Tapping Enabled Default (274): 0。我尝试通过此命令启用第二个选项xinput set-prop "Synaptics TM3336-004" "libinput Tapping Enabled Default" 1，但出现此错误：
X Error of failed request: BadAccess (attempt to access private resource denied)
Major opcode of failed request: 131 (XInputExtension)
Minor opcode of failed request: 57 ()
Serial number of failed request: 20
Current serial number in output stream: 21
1) 此错误是否表明了有关此问题的任何信息？
2) 命令输出中的哪些选项xinput list-props会影响此问题？
3) 这是一个错误吗？
的输出xinput为：
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Synaptics TM3336-004 id=10 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Video Bus id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Integrated Camera: Integrated C id=9 [slave keyboard (3)]
↳ Ideapad extra buttons id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
命令的输出xinput list-props 10是：
Device 'Synaptics TM3336-004':
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
libinput Tapping Enabled (273): 1
libinput Tapping Enabled Default (274): 0
libinput Tapping Drag Enabled (275): 1
libinput Tapping Drag Enabled Default (276): 1
libinput Tapping Drag Lock Enabled (277): 0
libinput Tapping Drag Lock Enabled Default (278): 0
libinput Tapping Button Mapping Enabled (279): 1, 0
libinput Tapping Button Mapping Default (280): 1, 0
libinput Natural Scrolling Enabled (281): 1
libinput Natural Scrolling Enabled Default (282): 0
libinput Disable While Typing Enabled (283): 0
libinput Disable While Typing Enabled Default (284): 1
libinput Scroll Methods Available (285): 1, 1, 0
libinput Scroll Method Enabled (286): 0, 0, 0
libinput Scroll Method Enabled Default (287): 1, 0, 0
libinput Click Methods Available (288): 1, 1
libinput Click Method Enabled (289): 1, 0
libinput Click Method Enabled Default (290): 1, 0
libinput Middle Emulation Enabled (291): 0
libinput Middle Emulation Enabled Default (292): 0
libinput Accel Speed (293): 0.622378
libinput Accel Speed Default (294): 0.000000
libinput Left Handed Enabled (295): 0
libinput Left Handed Enabled Default (296): 0
libinput Send Events Modes Available (258): 1, 1
libinput Send Events Mode Enabled (259): 0, 0
libinput Send Events Mode Enabled Default (260): 0, 0
Device Node (261): "/dev/input/event14"
Device Product ID (262): 1739, 33364
libinput Drag Lock Buttons (297): <no items>
libinput Horizontal Scroll Enabled (298):
谢谢。