(solved) Re: mouse scrolling activates back/forward in browser

[Michael Gmelin]

On Fri, 16 Apr 2021 21:38:29 +0200
Ronald Klop <ronald-lists at klop.ws> wrote:

> On 4/16/21 9:14 PM, Michael Gmelin wrote:
> > 
> >   
> >> On 16. Apr 2021, at 21:05, Ronald Klop <ronald-lists at klop.ws>
> >> wrote:
> >>
> >> On 4/15/21 9:11 PM, Michael Gmelin wrote:  
> >>>>> On 15. Apr 2021, at 20:54, Ronald Klop <ronald-lists at klop.ws>
> >>>>> wrote:  
> >>>>
> >>>> On 4/15/21 9:53 AM, Ronald Klop wrote:  
> >>>>> Hi,
> >>>>> When I use the scrollwheel of the mouse my browser triggers
> >>>>> back/forward. What happens is this: If I scroll up (button 4)
> >>>>> after scrolling down (button 5) it triggers button 8 and 9. I
> >>>>> see it generating a ButtonPress 8/9 if I go down and than up.
> >>>>> And a ButtonRelease 8/9 if I first go up and than down. I have
> >>>>> no config in /etc/X11. Xorg logs:
> >>>>> https://www.klop.ws/Xorg.0.log This happens on the trackpad of
> >>>>> the laptop and with a bluetooth connected mouse. What makes it
> >>>>> a little more complex is that this is running FreeBSD 14 in
> >>>>> VirtualBox on Windows 10 with. NB: It happened in Virtualbox 5
> >>>>> and now in 6 also. This started around a year ago.  
> >>> That’s because we switched to udev/libinput by default around
> >>> that time.  
> >>>>> https://lists.freebsd.org/pipermail/freebsd-ports/2020-March/117879.html
> >>>>> But didn't have time to look into it. Any thoughts or similar
> >>>>> experiences? Regards,
> >>>>> Ronald.  
> >>>>
> >>>>
> >>>> Some more googling found this:
> >>>> https://forums.freebsd.org/threads/mouse-wheel-strange-behavior-with-firefox.57494/
> >>>>
> >>>> Just removed button 8 and 9.
> >>>> xmodmap -e "pointer = 1 2 3 4 5 6 7 0 0 10 11 12"

Hi Ronald,

I could reproduce the issue in VirtualBox. When checking the output of
`libinput debug-events' I can see button press and release events for
BTN_SIDE and BTN_EXTRA (which maps to back and forward by default) every
time scrolling changes direction. After that, the proper AXIS events are
shown. Scrolling left and right also emits those events - therefore X11
sees button 8 and 9 instead of buttons 6 and 7. So far so good. The
problem also happens when an evdev driver is used, so it's not a
libinput problem.

Instead of removing buttons with xmodmap, you can also use

  xinput set-button-map "IntelliMouse Explorer" 1 2 3 4 5 6 7 0 0

e.g., in ~/.xinitrc, the effect is the same.

An alternative approach is to change virtualbox to use the USB Tablet
driver:

  VBoxManage modifyvm "VM Name" --mouse usbtablet

(or using the VirtualBox GUI) and then, inside the VM, do:

  pkg install utouch-kmod xf86-input-evdev
  echo "utouch_load=YES" >>/boot/loader.conf

Create a file called /usr/local/etc/X11/xorg.d/99-vbox.conf,
containing:

  Section "InputClass"
      Identifier "VirtualBox Mouse"
      MatchIsTouchscreen "on"
      MatchDevicePath "/dev/input/event*"
      Driver "evdev"
  EndSection

and reboot, then start X.
(in case you're not rebooting, do "kldload utouch; kldunload uhid").

You also need to make sure that Mouse Integration is enabled in
VirtualBox.

This will essentially have the same net-result: Vertical scrolling
works okay, no forward/back button issues, no horizontal scrolling. So
it's not necessarily worth the trouble, but I wanted to document it
anyway for future reference.

Ideally, there would be a solution that would allow the mouse to
actually emit horizontal scroll events. I suspect that the reason why
this isn't working with PS/2 emulation is in our IntelliMouse Explorer
driver, but I don't know for sure.

Best,
Michael

-- 
Michael Gmelin