bug#54436: 28.0.91; Only every second mouse wheel scroll is registered

[Urban Duh]

This makes scrolling behave as it should on Wayland. On X however, Emacs now receives too many scroll events per scroll on certain mouses. On Logitech MX master 3, every mouse wheel scroll is registered as a double or triple scroll. I would guess this has something to do with its scroll wheel, since it has an electromagnetic scroll wheel. Such issues do not exists on Emacs 28 though, but I guess I could probably make it usable by binding triple scroll to normal scroll.

On Mon, 21 Mar 2022 at 12:05, Po Lu <luangruo@yahoo.com> wrote:

Urban Duh <urby.duh@gmail.com> writes:

>> On the other hand, I don't see why that would happen on Wayland.  Do you
>> see a similar problem with a different mouse?  And can you verify that
>> your build is actually running in Wayland and not Xwayland?
>
> I have the same issue with two different mouses (Logitech MX Master 3 and
> a cheap off-brand mouse). My build is running Wayland (tested with xeyes
> and by disabling Xwayland on gnome via gnome-shell --no-x11).

What happens if you set mwheel-coalesce-scroll-events to nil?