On Fri, 27 Dec 2019 10:52:10 +0100
Internal Affairs <internalaffairs@...> wrote:

> I experienced the problem after I finally did a major update. Maybe it
> is a udev vs evdev thing.
> 
> I do not have this probem on MX (you know, the old Mepis / Antix related
> distro).
> 
> Funny thing is I cannot find xsettings or something there.
> If only I would know where to look I could compare :)
> 
> There is a EXEGNU LiveCD with Trinity, if I recall correctly it is
> working well there.
> 
> 

xinput (find you mouse)
xinput list-props ID
and then use xinput set-prop to set relevant ones

xinput --set-prop ID 'libinput Accel Profile Enabled' 0, 1
will set unaccelerated profile which you probably want on high dpi mouse
and if it still too fast, play with 'libinput Accel Speed'. f.e -0.5 will
set it to half, etc

P.S. It is possible that you mouse DPI is not detected properly by driver
use 
 ls -l /dev/input/by-id/
to find you mouse, then
 udevadm info /dev/input/eventX | grep MOUSE_DPI
if its not set, use mouse-dpi-tool to find actual dpi and
create /etc/udev/hwdb.d/71-mouse.hwdb with values from it


-- 
  Nick Koretsky (nick.koretsky@...)