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Scroll method button not working after libinput update

    • Open Issue created by Guillaume Charbonnier @guillaumecharbonnier

    After updating from Ubuntu 20 LTS to 22 LTS, the scroll button method for my Trackball does not work anymore. I have the same issue on ClearLinux (libinput v1.19.4).

    Here is the libinput.conf snippet I use:

    Section "InputClass"
        Identifier  "Marble Mouse"
        MatchProduct "Logitech USB Trackball"
        Driver "libinput"
        Option "ScrollMethod" "button"
        Option "ScrollButton" "9"
        Option "ButtonMapping" "3 9 1 4 5 6 7 8 2"
EndSection

    Does a recent update changed the default behavior? What should I modify to get it works properly?

    I can restore the working behavior using

    xinput set-prop "Logitech USB Trackball" "libinput Button Scrolling Button" 9
xinput set-prop "Logitech USB Trackball" "libinput Scroll Method Enabled" 0 0 1

    but I would like to know the appropriate conf settings for a permanent solution.

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    • Activity

    • José Expósito
      José Expósito @JoseExposito ·
      Maintainer

      I think that your config should read:

      Section "InputClass"
        Identifier  "Logitech USB Trackball"
        Driver "libinput"
        Option "ScrollMethod" "button"
        Option "ScrollButton" "9"
        Option "ButtonMapping" "3 9 1 4 5 6 7 8 2"
EndSection

      In my case, I use something very similar and it works:

      $ cat /etc/X11/xorg.conf.d/00-mouse.conf
Section "InputClass"
    Identifier "Logitech M705"
    Option "ScrollMethod" "button"
    Option "ScrollButton" "2"
EndSection
      • Guillaume Charbonnier
        Guillaume Charbonnier @guillaumecharbonnier ·
        Author

        Thanks José, I do not see any behavior difference with your snippet. The button mapping is effective but the scrolling is not.

      • José Expósito
        José Expósito @JoseExposito ·
        Maintainer

        Ops, yes, the ButtonMapping option does not change the button selected in ScrollButton. In your case, ScrollButton should be 2:

        Section "InputClass"
        Identifier  "Logitech USB Trackball"
        Driver "libinput"
        Option "ScrollMethod" "button"
        Option "ScrollButton" "2"
        Option "ButtonMapping" "3 9 1 4 5 6 7 8 2"
EndSection
      • Guillaume Charbonnier
        Guillaume Charbonnier @guillaumecharbonnier ·
        Author

        Yes, and that is why it was 9. The issue is somewhere else. Here is the trackball mapping: https://i.stack.imgur.com/IEZU8.png

      • José Expósito
        José Expósito @JoseExposito ·
        Maintainer

        Thanks for the picture, the issue must be somewhere else then, I think that your config is correct.

        Let's make some checks to see what's going on:

        First, double check that you are on X11 and not on Wayland. Otherwise, the changes made to your config file won't have effect. You can check it on Settings > About > Windowing System: https://docs.fedoraproject.org/es/quick-docs/_images/configuring-xorg-as-default-gnome-session_1.png

        Now, run xinput on a terminal and note your device number or name (probably "Logitech USB Trackball").

        Please share the output of:

        $ xinput get-button-map "Logitech USB Trackball" # Replace your device name if needed

        You should see your configured mapping: 3 9 1 4 5 6 7 8 2

        And also share the output of:

        $ xinput list-props "Logitech USB Trackball" # Replace your device name if needed

        You should see your configured scroll method and scroll button.

        Finally, 2 extra steps:

        Run in a terminal and attach as a file the output of the following command while performing a button scroll with button 9:

        $ sudo libinput debug-events --verbose --set-scroll-method=button --set-scroll-button=BTN_EXTRA

        And the final step: Run xev. This will open a window. Click on the window with different buttons and make sure that the correct button is displayed on the terminal.

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    • Guillaume Charbonnier
      Guillaume Charbonnier @guillaumecharbonnier ·
      Author 
      $ xinput get-button-map "Logitech USB Trackball"
3 9 1 4 5 6 7 8 2 

$ xinput list-props "Logitech USB Trackball"
Device 'Logitech USB Trackball':
	Device Enabled (214):	1
	Coordinate Transformation Matrix (216):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Natural Scrolling Enabled (351):	0
	libinput Natural Scrolling Enabled Default (352):	0
	libinput Scroll Methods Available (353):	0, 0, 1
	libinput Scroll Method Enabled (354):	0, 0, 0
	libinput Scroll Method Enabled Default (355):	0, 0, 1
	libinput Button Scrolling Button (356):	0
	libinput Button Scrolling Button Default (357):	8
	libinput Button Scrolling Button Lock Enabled (358):	0
	libinput Button Scrolling Button Lock Enabled Default (359):	0
	libinput Rotation Angle (374):	0.000000
	libinput Rotation Angle Default (375):	0.000000
	libinput Accel Speed (362):	0.000000
	libinput Accel Speed Default (363):	0.000000
	libinput Accel Profiles Available (364):	1, 1
	libinput Accel Profile Enabled (365):	1, 0
	libinput Accel Profile Enabled Default (366):	1, 0
	libinput Left Handed Enabled (367):	0
	libinput Left Handed Enabled Default (368):	0
	libinput Send Events Modes Available (336):	1, 0
	libinput Send Events Mode Enabled (337):	0, 0
	libinput Send Events Mode Enabled Default (338):	0, 0
	Device Node (339):	"/dev/input/event15"
	Device Product ID (340):	1133, 50184
	libinput Drag Lock Buttons (369):	<no items>
	libinput Horizontal Scroll Enabled (370):	1
	libinput Scrolling Pixel Distance (371):	15
	libinput Scrolling Pixel Distance Default (372):	15
	libinput High Resolution Wheel Scroll Enabled (373):	1

      I have attached the stdout of the libinput debug-events command: libinput_debug-event_trackball_scroll.txt

      Regarding xev: 1 8 9 3 (from https://i.stack.imgur.com/IEZU8.png) output these button values: 3 8 2 1

      After these commands, I have also tried to add the command for a working scroll:

      xinput set-prop "Logitech USB Trackball" "libinput Button Scrolling Button" 9
xinput set-prop "Logitech USB Trackball" "libinput Scroll Method Enabled" 0 0 1

      Then I get:

      $ xinput list-props "Logitech USB Trackball"
Device 'Logitech USB Trackball':
	Device Enabled (214):	1
	Coordinate Transformation Matrix (216):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Natural Scrolling Enabled (351):	0
	libinput Natural Scrolling Enabled Default (352):	0
	libinput Scroll Methods Available (353):	0, 0, 1
	libinput Scroll Method Enabled (354):	0, 0, 1
	libinput Scroll Method Enabled Default (355):	0, 0, 1
	libinput Button Scrolling Button (356):	9
	libinput Button Scrolling Button Default (357):	8
	libinput Button Scrolling Button Lock Enabled (358):	0
	libinput Button Scrolling Button Lock Enabled Default (359):	0
	libinput Rotation Angle (374):	0.000000
	libinput Rotation Angle Default (375):	0.000000
	libinput Accel Speed (362):	0.000000
	libinput Accel Speed Default (363):	0.000000
	libinput Accel Profiles Available (364):	1, 1
	libinput Accel Profile Enabled (365):	1, 0
	libinput Accel Profile Enabled Default (366):	1, 0
	libinput Left Handed Enabled (367):	0
	libinput Left Handed Enabled Default (368):	0
	libinput Send Events Modes Available (336):	1, 0
	libinput Send Events Mode Enabled (337):	0, 0
	libinput Send Events Mode Enabled Default (338):	0, 0
	Device Node (339):	"/dev/input/event15"
	Device Product ID (340):	1133, 50184
	libinput Drag Lock Buttons (369):	<no items>
	libinput Horizontal Scroll Enabled (370):	1
	libinput Scrolling Pixel Distance (371):	15
	libinput Scrolling Pixel Distance Default (372):	15
	libinput High Resolution Wheel Scroll Enabled (373):	1

      I notice the difference: libinput Scroll Method Enabled (354): 0, 0, 1

    • José Expósito
      José Expósito @JoseExposito ·
      Maintainer

      Thanks for the detailed output.

      I notice the difference: libinput Scroll Method Enabled (354): 0, 0, 1

      And also libinput Button Scrolling Button (356): 0 becomes libinput Button Scrolling Button (356): 9, which is the expected value.

      The output of libinput debug events shows a bunch of POINTER_SCROLL_CONTINUOUS events, which is the expected event as well, so libinput is working as expected.

      At this point, the problem is either in your configuration or somewhere else in the X11 configuration parser (I don't know which bit parses that config file, to be honest).

      Where are you storing your configuration file? Mine is placed in /etc/X11/xorg.conf.d/00-mouse.conf. I tested your configuration (replacing the device name) and it works as expected.

      A possible workaround is to execute your xinput set-prop [...] commands on login.

    • Guillaume Charbonnier
      Guillaume Charbonnier @guillaumecharbonnier ·
      Author

      I have tried vanilla conf from Ubuntu 22LTS, its PopOS-flavour, and ClearLinux, and all three have the same issue. I do not know if there are other folders loaded that could contain something that reset the scroll setting.

      $ ls -1 /usr/share/X11/xorg.conf.d/* /etc/X11/xorg.conf.d/*
/etc/X11/xorg.conf.d/00-logitech-trackpad.conf
/usr/share/X11/xorg.conf.d/10-amdgpu.conf
/usr/share/X11/xorg.conf.d/10-nvidia.conf
/usr/share/X11/xorg.conf.d/10-pop-dpms.conf
/usr/share/X11/xorg.conf.d/10-quirks.conf
/usr/share/X11/xorg.conf.d/10-radeon.conf
/usr/share/X11/xorg.conf.d/40-libinput.conf
/usr/share/X11/xorg.conf.d/70-wacom.conf

$ grep Scroll /usr/share/X11/xorg.conf.d/* /etc/X11/xorg.conf.d/*
/etc/X11/xorg.conf.d/00-logitech-trackpad.conf:        Option "ScrollMethod" "button"
/etc/X11/xorg.conf.d/00-logitech-trackpad.conf:        Option "ScrollButton" "9"
    • José Expósito
      José Expósito @JoseExposito ·
      Maintainer

      I just tested on a fresh Ubuntu 22 virtual machine using GNOME Boxes and there seems to be an issue:

      $ cat /etc/X11/xorg.conf.d/00-mouse.conf
Section "InputClass"
        Identifier  "VirtualPS/2 VMware VMMouse"
        Driver "libinput"
        Option "ScrollMethod" "button"
        Option "ScrollButton" "9"
        Option "ButtonMapping" "3 9 1 4 5 6 7 8 2"
EndSection

      After log-out and log-in:

      $ xinput get-button-map 9
3 9 1 4 5 6 7 

$ xinput list-props 9
Device 'VirtualPS/2 VMware VMMouse':
	Device Enabled (124):	1
	Coordinate Transformation Matrix (126):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Natural Scrolling Enabled (262):	0
	libinput Natural Scrolling Enabled Default (263):	0
	libinput Scroll Methods Available (273):	0, 0, 1
	libinput Scroll Method Enabled (274):	0, 0, 1
	libinput Scroll Method Enabled Default (275):	0, 0, 1
	libinput Button Scrolling Button (276):	3
	libinput Button Scrolling Button Default (277):	3
	libinput Button Scrolling Button Lock Enabled (278):	0
	libinput Button Scrolling Button Lock Enabled Default (279):	0
	libinput Accel Speed (280):	0.000000
	libinput Accel Speed Default (281):	0.000000
	libinput Accel Profiles Available (282):	1, 1
	libinput Accel Profile Enabled (283):	1, 0
	libinput Accel Profile Enabled Default (284):	1, 0
	libinput Left Handed Enabled (268):	0
	libinput Left Handed Enabled Default (269):	0
	libinput Send Events Modes Available (245):	1, 0
	libinput Send Events Mode Enabled (246):	0, 0
	libinput Send Events Mode Enabled Default (247):	0, 0
	Device Node (248):	"/dev/input/event3"
	Device Product ID (249):	2, 19
	libinput Drag Lock Buttons (270):	<no items>
	libinput Horizontal Scroll Enabled (271):	1
	libinput Scrolling Pixel Distance (285):	15
	libinput Scrolling Pixel Distance Default (286):	15
	libinput High Resolution Wheel Scroll Enabled (272):	1

      The mapping is correct, but the scrolling button does not change.

      I don't know where the issue could be. Let's ping @whot as he knows for sure. It's probably me missing something, but let's double check with him just in case.

      Edited by José Expósito
    • Peter Hutterer moved from libinput/libinput#806 (moved)

      moved from libinput/libinput#806 (moved)

    • Peter Hutterer
      Peter Hutterer @whot ·
      Owner

      Moving to xf86-input-libinput, it's probably an issue with this driver.

      I've just been away for 8 weeks, so apologies if the reply here is curt.

      A quick check of the code and my memory: the button mapping has no effect on the scroll button itself. The latter always refers to the physical button, albeit in X notation, i.e. button 9 is actually physical button 5 because 4-7 is reserved in X. Button mapping is actually handled in the server (despite being initialized by the driver), so the libinput driver doesn't know that you swapped buttons 2 and 9. I also recommend trying out the left-handed option for libinput instead of swapping 1 and 3. But either way, for this bug we should be able to ignore any button mapping.

      But that aside, the issue seems to be that the button isn't assigned during the PreInit function. I don't immediately see why this would be the case - there's no error message in the xorg.log? This seems like a candidate for single-stepping through LibinputApplyConfigScrollMethod and figuring out where it actually goes wrong.

    • David Bustos
      David Bustos @dbustos ·

      In case it's useful I was having a similar problem. I configured the X server for button scrolling and the log file indicated the setting was read. But it was not effective and I had to use xinput to set the mode.

      I patched debugging code into xf86-input-libinput and determined that an X client was changing the setting. X server auditing indicated that the client was lxqt-globalkeysd. Then I found scrolling mode in the LXQt settings and changed it from "None" to "Button".

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