A rolagem de borda está funcionando bem, mas a rolagem de dois dedos parou de funcionar?

Question

Depois de reinstalar o xorg, minha rolagem com dois dedos do touchpad parou de funcionar, embora a rolagem de borda esteja funcionando perfeitamente. Eu tentei soluções diferentes, mas nenhuma delas funciona.

Meu arquivo original /etc/X11/xorg.conf.d/50-synaptics.conf é

# 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

Eu realizei a seguinte modificação conforme sugerido em lugares diferentes, mas ainda assim o problema persiste.

# 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*"
    Option "TapButton1" "1"
    Option "TapButton2" "2"
    Option "TapButton3" "3"
    Option "VertEdgeScroll" "on"
    Option "VertTwoFingerScroll" "on"
    Option "HorizEdgeScroll" "on"
    Option "HorizTwoFingerScroll" "on"
    Option "CircularScrolling" "on"
    Option "CircScrollTrigger" "2"
    Option "EmulateTwoFingerMinZ" "40"
    Option "EmulateTwoFingerMinW" "8"
    Option "CoastingSpeed" "0"
    Option "FingerLow" "35"
    Option "FingerHigh" "40"
EndSection

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

Meu Xorg.0.log se parece com isso.

[    22.912] (II) config/udev: Adding input device ImPS/2 Synaptics TouchPad (/dev/input/event6)
[    22.912] (**) ImPS/2 Synaptics TouchPad: Applying InputClass "evdev pointer catchall"
[    22.912] (**) ImPS/2 Synaptics TouchPad: Applying InputClass "evdev pointer catchall"
[    22.912] (II) Using input driver 'evdev' for 'ImPS/2 Synaptics TouchPad'
[    22.912] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    22.912] (**) ImPS/2 Synaptics TouchPad: always reports core events
[    22.912] (**) evdev: ImPS/2 Synaptics TouchPad: Device: "/dev/input/event6"
[    22.912] (--) evdev: ImPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x5
[    22.912] (--) evdev: ImPS/2 Synaptics TouchPad: Found 3 mouse buttons
[    22.912] (--) evdev: ImPS/2 Synaptics TouchPad: Found scroll wheel(s)
[    22.912] (--) evdev: ImPS/2 Synaptics TouchPad: Found relative axes
[    22.912] (--) evdev: ImPS/2 Synaptics TouchPad: Found x and y relative axes
[    22.912] (II) evdev: ImPS/2 Synaptics TouchPad: Configuring as mouse
[    22.912] (II) evdev: ImPS/2 Synaptics TouchPad: Adding scrollwheel support
[    22.912] (**) evdev: ImPS/2 Synaptics TouchPad: YAxisMapping: buttons 4 and 5
[    22.912] (**) evdev: ImPS/2 Synaptics TouchPad: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    22.912] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input6/event6"
[    22.912] (II) XINPUT: Adding extended input device "ImPS/2 Synaptics TouchPad" (type: MOUSE, id 11)
[    22.912] (II) evdev: ImPS/2 Synaptics TouchPad: initialized for relative axes.
[    22.912] (**) ImPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[    22.912] (**) ImPS/2 Synaptics TouchPad: (accel) acceleration profile 0
[    22.912] (**) ImPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[    22.912] (**) ImPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[    22.912] (II) config/udev: Adding input device ImPS/2 Synaptics TouchPad (/dev/input/mouse1)
[    22.912] (II) No input driver specified, ignoring this device.
[    22.912] (II) This device may have been added with another device file.

    

Answer 1

Tente definir o valor da opção "VertTwoFingerScroll" com

synclient VertTwoFingerScroll=1