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I can't believe I've spent almost 2 hours looking for an answer to work for me - but I couln't find oune. I know this has been asked before numerous times - but no solution seems to work for my mouse (wireless Mouse + Keyboard (single dongle) by Microsoft).

The problem is that the scroll is way too fast, but when I remove and insert the dongle back, now the scroll is way too slow :(.

here's an input of xinput list short:

⎡ Virtual core pointer                      id=2    [master pointer  (3)]

⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]

⎜   ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0  id=9    [slave  pointer  (2)]

⎜   ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0  id=11   [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)]

    ↳ Power Button                              id=7    [slave  keyboard (3)]

    ↳ Sleep Button                              id=8    [slave  keyboard (3)]

    ↳ Jabra Jabra UC VOICE 150a MS              id=12   [slave  keyboard (3)]

    ↳ Eee PC WMI hotkeys                        id=13   [slave  keyboard (3)]

    ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0  id=10   [slave  keyboard (3)]

    ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0  id=14   [slave  keyboard (3)]

    ↳ Microsoft Microsoft® 2.4GHz Transceiver v7.0  id=15   [slave  keyboard (3)]

and here's the input for:
xinput list-props 11:

Device 'Microsoft Microsoft® 2.4GHz Transceiver v7.0':

    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 Natural Scrolling Enabled (288):   0

    libinput Natural Scrolling Enabled Default (289):   0

    libinput Scroll Methods Available (290):    0, 0, 1

    libinput Scroll Method Enabled (291):   0, 0, 1

    libinput Scroll Method Enabled Default (292):   0, 0, 0

    libinput Button Scrolling Button (293): 2

    libinput Button Scrolling Button Default (294): 2

    libinput Middle Emulation Enabled (295):    0

    libinput Middle Emulation Enabled Default (296):    0

    libinput Accel Speed (297): -0.007194

    libinput Accel Speed Default (298): 0.000000

    libinput Accel Profiles Available (299):    1, 1

    libinput Accel Profile Enabled (300):   1, 0

    libinput Accel Profile Enabled Default (301):   1, 0

    libinput Left Handed Enabled (302): 0

    libinput Left Handed Enabled Default (303): 0

    libinput Send Events Modes Available (273): 1, 0

    libinput Send Events Mode Enabled (274):    0, 0

    libinput Send Events Mode Enabled Default (275):    0, 0

    Device Node (276):  "/dev/input/event4"

    Device Product ID (277):    1118, 1861

    libinput Drag Lock Buttons (304):   <no items>

    libinput Horizontal Scroll Enabled (305):   1

now, as you can't see, there no:
'Device Accel Constant Deceleration', and also no
"Evdev Scrolling Distance"
which are some properties I've read that I should change in order to get what I wan't.

Needless to say that when I do as suggested in other answers I get:

$ xinput set-prop 11 "Evdev Scrolling Distance" 8 1 1

property 'Evdev Scrolling Distance' doesn't exist, you need to specify its type and forma

$xinput set-prop 11 'Device Accel Constant Deceleration' 3

property 'Device Accel Constant Deceleration' doesn't exist, you need
to specify its type and format.

I also tried to define these properties - but with no success. Please help me - this is driving me crazy.

Thanks.