@Helmut, from your Xorg.log and dmesg, MSFT0001 has beend detected and enabled in kernel, but somehow it failed to be enabled in xorg:

[    74.771] (II) config/udev: Adding input device MSFT0001:00 04F3:3140 Mouse (/dev/input/event16)
[    74.771] (**) MSFT0001:00 04F3:3140 Mouse: Applying InputClass "evdev pointer catchall"
[    74.771] (**) MSFT0001:00 04F3:3140 Mouse: Applying InputClass "libinput pointer catchall"
[    74.771] (II) Using input driver 'libinput' for 'MSFT0001:00 04F3:3140 Mouse'
[    74.771] (**) MSFT0001:00 04F3:3140 Mouse: always reports core events
[    74.771] (**) Option "Device" "/dev/input/event16"
[    74.771] (**) Option "_source" "server/udev"
[    74.772] (II) event16 - MSFT0001:00 04F3:3140 Mouse: is tagged by udev as: Mouse Pointingstick
[    74.772] (II) event16 - MSFT0001:00 04F3:3140 Mouse: device is a pointer
[    74.772] (II) event16 - MSFT0001:00 04F3:3140 Mouse: device removed
[    74.836] (**) Option "config_info" "udev:/sys/devices/platform/AMDI0010:03/i2c-0/i2c-MSFT0001:00/0018:04F3:3140.0001/input/input18/event16"
[    74.836] (II) XINPUT: Adding extended input device "MSFT0001:00 04F3:3140 Mouse" (type: MOUSE, id 16)
[    74.836] (**) Option "AccelerationScheme" "none"
[    74.836] (**) MSFT0001:00 04F3:3140 Mouse: (accel) selected scheme none/0
[    74.836] (**) MSFT0001:00 04F3:3140 Mouse: (accel) acceleration factor: 2.000
[    74.836] (**) MSFT0001:00 04F3:3140 Mouse: (accel) acceleration threshold: 4
[    74.837] (II) event16 - MSFT0001:00 04F3:3140 Mouse: is tagged by udev as: Mouse Pointingstick
[    74.837] (II) event16 - MSFT0001:00 04F3:3140 Mouse: device is a pointer
[    74.838] (II) config/udev: Adding input device MSFT0001:00 04F3:3140 Mouse (/dev/input/mouse0)
[    74.838] (II) No input driver specified, ignoring this device.
[    74.838] (II) This device may have been added with another device file.
[    74.839] (II) config/udev: Adding input device MSFT0001:00 04F3:3140 Touchpad (/dev/input/event17)
[    74.839] (**) MSFT0001:00 04F3:3140 Touchpad: Applying InputClass "evdev touchpad catchall"
[    74.839] (**) MSFT0001:00 04F3:3140 Touchpad: Applying InputClass "libinput touchpad catchall"
[    74.839] (II) Using input driver 'libinput' for 'MSFT0001:00 04F3:3140 Touchpad'
[    74.839] (**) MSFT0001:00 04F3:3140 Touchpad: always reports core events
[    74.839] (**) Option "Device" "/dev/input/event17"
[    74.839] (**) Option "_source" "server/udev"
[    74.839] (II) event17 - MSFT0001:00 04F3:3140 Touchpad: is tagged by udev as: Touchpad
[    74.840] (II) event17 - MSFT0001:00 04F3:3140 Touchpad: device is a touchpad
[    74.840] (II) event17 - MSFT0001:00 04F3:3140 Touchpad: device removed
[    74.916] (**) Option "config_info" "udev:/sys/devices/platform/AMDI0010:03/i2c-0/i2c-MSFT0001:00/0018:04F3:3140.0001/input/input19/event17"
[    74.917] (II) XINPUT: Adding extended input device "MSFT0001:00 04F3:3140 Touchpad" (type: TOUCHPAD, id 17)
[    74.917] (**) Option "AccelerationScheme" "none"
[    74.917] (**) MSFT0001:00 04F3:3140 Touchpad: (accel) selected scheme none/0
[    74.917] (**) MSFT0001:00 04F3:3140 Touchpad: (accel) acceleration factor: 2.000
[    74.917] (**) MSFT0001:00 04F3:3140 Touchpad: (accel) acceleration threshold: 4
[    74.918] (II) event17 - MSFT0001:00 04F3:3140 Touchpad: is tagged by udev as: Touchpad
[    74.919] (II) event17 - MSFT0001:00 04F3:3140 Touchpad: device is a touchpad
[    74.919] (II) config/udev: Adding input device MSFT0001:00 04F3:3140 Touchpad (/dev/input/mouse1)
[    74.919] (II) No input driver specified, ignoring this device.
[    74.919] (II) This device may have been added with another device file.

Add xserver-xorg-input-libinput to related package.