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当未触摸触摸板时，点击板左键单击在 Ubuntu 20.04 上不起作用

tag-icon • tag-icon 20.04 xorg touchpad synaptics libinput
当未触摸触摸板时，点击板左键单击在 Ubuntu 20.04 上不起作用

我在新电脑（Dell Precision 7550）上安装新的 Ubuntu 20.04 时遇到问题。点击板/触摸板如下所示：

点击板/触摸板

右键和中键工作正常。但是，只有当我同时触摸触摸板时，左键才会被记录点击。如果我按下左键而没有同时触摸触摸板，系统不会记录点击，也不会发生任何事情。

问题：如何修复该问题，并使触摸板左键即使在没有被触摸时也能工作？

这是当前配置。我的电脑上安装了以下软件包：

  • libinput-bin 1.15.5-1
  • libinput10 1.15.5-1
  • xserver-xorg-input-libinput 0.29.0-1
  • xserver-xorg-input-synaptics 1.9.1-1

这是我打印时得到的结果xinput list：

⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ DELL09C3:00 0488:120A Mouse               id=11   [slave  pointer  (2)]
⎜   ↳ DELL09C3:00 0488:120A Touchpad            id=12   [slave  pointer  (2)]
⎜   ↳ PS/2 Generic Mouse                        id=18   [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)]
    ↳ Power Button                              id=7    [slave  keyboard (3)]
    ↳ Sleep Button                              id=8    [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate           id=10   [slave  keyboard (3)]
    ↳ DELL09C3:00 0488:120A UNKNOWN             id=13   [slave  keyboard (3)]
    ↳ Intel HID events                          id=14   [slave  keyboard (3)]
    ↳ Intel HID 5 button array                  id=15   [slave  keyboard (3)]
    ↳ Dell WMI hotkeys                          id=16   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=17   [slave  keyboard (3)]

以下是该文件的内容/usr/share/X11/xorg.conf.d/40-libinput.conf：

# Match on all types of devices but joysticks
#
# If you want to configure your devices, do not copy this file.
# Instead, use a config snippet that contains something like this:
#
# Section "InputClass"
#   Identifier "something or other"
#   MatchDriver "libinput"
#
#   MatchIsTouchpad "on"
#   ... other Match directives ...
#   Option "someoption" "value"
# EndSection
#
# This applies the option any libinput device also matched by the other
# directives. See the xorg.conf(5) man page for more info on
# matching devices.

Section "InputClass"
        Identifier "libinput pointer catchall"
        MatchIsPointer "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput keyboard catchall"
        MatchIsKeyboard "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput touchscreen catchall"
        MatchIsTouchscreen "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput tablet catchall"
        MatchIsTablet "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

以及以下内容usr/share/X11/xorg.conf.d/51-synaptics-quirks.conf：

Section "InputClass"
    Identifier "Dell Inspiron embedded buttons quirks"
    MatchTag "inspiron_1011|inspiron_1012"
    MatchDevicePath "/dev/input/event*"
    Driver "synaptics"
    Option "JumpyCursorThreshold" "90"
EndSection

Section "InputClass"
    Identifier "Dell Inspiron quirks"
    MatchTag "inspiron_1120"
    MatchDevicePath "/dev/input/event*"
    Driver "synaptics"
    Option "JumpyCursorThreshold" "250"
EndSection

Section "InputClass"
    Identifier "HP Mininote quirks"
    MatchTag "mininote_1000"
    MatchDevicePath "/dev/input/event*"
    Driver "synaptics"
    Option "JumpyCursorThreshold" "20"
EndSection

以及以下内容/usr/share/X11/xorg.conf.d/70-synaptics.conf：

# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
#   Option "OptionName" "value"
#
Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
      MatchDevicePath "/dev/input/event*"
EndSection

Section "InputClass"
        Identifier "touchpad ignore duplicates"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/mouse*"
        Option "Ignore" "on"
EndSection

# This option enables the bottom right corner to be a right button on clickpads
# and the right and middle top areas to be right / middle buttons on clickpads
# with a top button area.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
        Option "SecondarySoftButtonAreas" "58% 0 0 15% 42% 58% 0 15%"
EndSection

# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Disable clickpad buttons on Apple touchpads"
        MatchProduct "Apple|bcm5974"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection

答案1

我刚刚在装有 Ubuntu 22.04 的戴尔 precision 7550 上遇到了类似的问题。我的触摸板右键点击不起作用，而我的触摸板左键点击只有当我同时将手指放在触摸板上时才有效。

解决方案是在戴尔驱动程序网站上下载适用于 Ubuntu 20.04 的戴尔触摸板驱动程序更新（Cirque 触摸板固件更新实用程序）。现在我的触摸板可以正常工作了。

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