bug#57526: 29.0.50; Precise pixel-scrolling works great with touchpad but not with mouse wheel

[Tassilo Horn]

Po Lu <luangruo@yahoo.com> writes:

>> The short list is:
>>
>> ❯ xinput list
>> WARNING: running xinput against an Xwayland server. See the xinput man page
>> for details.
>> ⎡ Virtual core pointer                       id=2    [master pointer  (3)]
>> ⎜   ↳ Virtual core XTEST pointer                     id=4    [slave  pointer 
>>  (2)]
>> ⎜   ↳ xwayland-pointer:39                            id=6    [slave  pointer 
>>  (2)]
>> ⎜   ↳ xwayland-relative-pointer:39                   id=7    [slave  pointer 
>>  (2)]
>> ⎜   ↳ xwayland-pointer-gestures:39                   id=8    [slave  pointer 
>>  (2)]
>> ⎣ Virtual core keyboard                      id=3    [master keyboard (2)]
>>     ↳ Virtual core XTEST keyboard                    id=5    [slave  
>> keyboard (3)]
>>     ↳ xwayland-keyboard:39                           id=9    [slave  
>> keyboard (3)]
>>
>> Interestingly, that list is the same no matter if I plugged my mouse
>> into my notebook's USB slot or if it is not connected.
>
> Ah, you're using Xwayland.

Actually, I use pgtk so that emacs runs as native wayland client but I
guess that doesn't make a difference here.

AFAIK, X and wayland use libinput for device handling by default and
"libinput list-devices" knows about touchpad AND USB mouse.  Of course I
have no clue if that has any relevance wrt. emacs.

libinput-list-devices.txt
Description: Text document

Bye,
Tassilo