From: Tassilo Horn <tsdh@gnu.org>
To: Po Lu <luangruo@yahoo.com>
Cc: 57526@debbugs.gnu.org
Subject: bug#57526: 29.0.50; Precise pixel-scrolling works great with touchpad but not with mouse wheel
Date: Fri, 02 Sep 2022 14:39:29 +0200 [thread overview]
Message-ID: <87sfla2b8z.fsf@gnu.org> (raw)
In-Reply-To: <87pmgej6ri.fsf@yahoo.com>
Po Lu <luangruo@yahoo.com> writes:
>> Actually, I use pgtk so that emacs runs as native wayland client but
>> I guess that doesn't make a difference here.
>
> Hmm, please show what message is displayed when you scroll with the
> mouse, after running this:
>
> (while t (read-event) (message "Device: %s" last-event-device))
Device: Virtual core pointer [24 times]
>> 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.
>
> X doesn't necessarily use libinput for input handling. It all depends
> on the input drivers in use.
>
> Most Wayland compositors do, however.
I use sway and also have only xf86-input-libinput and
xf86-input-synaptics installed.
When I run "sudo libinput debug-events" and click and scroll with the
USB mouse, I get:
event6 POINTER_MOTION +34.209s 0.00/ 0.41 ( +0.00/ +1.00)
event6 POINTER_BUTTON +34.209s BTN_LEFT (272) released, seat count: 0
event6 POINTER_SCROLL_WHEEL +35.425s vert -15.00/-120.0* horiz 0.00/0.0 (wheel)
With the touchpad I get:
-event18 GESTURE_HOLD_BEGIN +0.041s 2
event18 GESTURE_HOLD_END +2.254s 2
event18 POINTER_MOTION +3.456s -0.12/ 0.41 ( -1.00/ +3.32)
event18 POINTER_MOTION +3.465s -0.24/ 1.60 ( -1.00/ +6.65)
event18 POINTER_MOTION +3.475s -0.51/ 1.42 ( -2.00/ +5.54)
event18 POINTER_MOTION +3.484s 0.00/ 2.85 ( +0.00/+11.08)
event18 GESTURE_HOLD_BEGIN +4.527s 1
event18 GESTURE_HOLD_END +4.545s 1
In both cases, event6 and event18 are the devices shown by "sudo
libinput list-devices".
Bye,
Tassilo
next prev parent reply other threads:[~2022-09-02 12:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-01 13:48 bug#57526: 29.0.50; Precise pixel-scrolling works great with touchpad but not with mouse wheel Tassilo Horn
2022-09-02 1:15 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-09-02 4:57 ` Tassilo Horn
2022-09-02 9:30 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-09-02 11:41 ` Tassilo Horn
2022-09-02 12:33 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-09-02 12:39 ` Tassilo Horn [this message]
2022-09-03 1:04 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-09-03 7:04 ` Tassilo Horn
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