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问题来源

更换的4k显示器后，鼠标速度变的非常慢。

尝试xset等命令均无效，如下方法完美解决问题。

直接在设置界面设置鼠标速度，范围有限

解决方法

首先查看所有设备

命令行输入

xinput --list

打印信息如下

yjf@chardonnay:~$ xinput --list
⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Microsoft Microsoft® Classic IntelliMouse®    id=9    [slave  pointer  (2)]
⎜   ↳ SONiX USB DEVICE                          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)]
    ↳ SONiX USB DEVICE                          id=10   [slave  keyboard (3)]
    ↳ SONiX USB DEVICE                          id=12   [slave  keyboard (3)]

可见，我鼠标的id是9

查看鼠标信息

命令行输入

 xinput --list-props 9

打印信息如下

yjf@chardonnay:~$ xinput --list-props 9
Device 'Microsoft Microsoft® Classic IntelliMouse®':
    Device Enabled (155):   1
    Coordinate Transformation Matrix (157): 1.00000, 0.000000, 0.000000, 0.000000, 1.00000, 0.000000, 0.000000, 0.000000, 1.000000
    libinput Natural Scrolling Enabled (291):   0
    libinput Natural Scrolling Enabled Default (292):   0
    libinput Scroll Methods Available (293):    0, 0, 1
    libinput Scroll Method Enabled (294):   0, 0, 0
    libinput Scroll Method Enabled Default (295):   0, 0, 0
    libinput Button Scrolling Button (296): 2
    libinput Button Scrolling Button Default (297): 2
    libinput Middle Emulation Enabled (298):    0
    libinput Middle Emulation Enabled Default (299):    0
    libinput Accel Speed (300): 1.000000
    libinput Accel Speed Default (301): 0.000000
    libinput Accel Profiles Available (302):    1, 1
    libinput Accel Profile Enabled (303):   1, 0
    libinput Accel Profile Enabled Default (304):   1, 0
    libinput Left Handed Enabled (305): 0
    libinput Left Handed Enabled Default (306): 0
    libinput Send Events Modes Available (276): 1, 0
    libinput Send Events Mode Enabled (277):    0, 0
    libinput Send Events Mode Enabled Default (278):    0, 0
    Device Node (279):  "/dev/input/event3"
    Device Product ID (280):    1118, 2083
    libinput Drag Lock Buttons (307):   <no items>
    libinput Horizontal Scroll Enabled (308):   1

修改矩阵

原来的矩阵是

将前两个1修改为1.5，速度就刚好OK啦

xinput --set-prop 9 157 1.5 0 0 0 1.5 0 0 0 1

ref

https://unix.stackexchange.com/questions/90572/how-can-i-set-mouse-sensitivity-not-just-mouse-acceleration