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stefano

Member

Registered: 2011-04-09

Posts: 258

[SOLVED]Mouse wheel lost scroll function in plasma (only) after update

My mouse's wheel no longer works as a scroll wheel in Kde apps, yet it still works as previously in other apps like Firefox, Libreoffice, etc.

I haven't been able to find a related setting in the KDE setting app---none of the (very few) mouse options refer to the mouse wheel.

I have checked that the wheel is actually working with both xev and libinput and indeed the events are generated:

xev shows:

ButtonPress event, serial 40, synthetic NO, window 0x2800001,
    root 0x2fb, subw 0x0, time 196854654, (113,119), root:(113,151),
    state 0x0, button 5, same_screen YES

ButtonPress event, serial 40, synthetic NO, window 0x2800001,
    root 0x2fb, subw 0x0, time 196854158, (113,119), root:(113,151),
    state 0x0, button 4, same_screen YES

and libinput:

stefano@gorgias  $  libinput debug-events
-event1   DEVICE_ADDED     Power Button                      seat0 default group1  cap:k
-event0   DEVICE_ADDED     Power Button                      seat0 default group2  cap:k
-event12  DEVICE_ADDED     HDA NVidia HDMI/DP,pcm=3          seat0 default group3  cap:
-event13  DEVICE_ADDED     HDA NVidia HDMI/DP,pcm=7          seat0 default group3  cap:
-event14  DEVICE_ADDED     HDA NVidia HDMI/DP,pcm=8          seat0 default group3  cap:
-event15  DEVICE_ADDED     HDA NVidia HDMI/DP,pcm=9          seat0 default group3  cap:
-event9   DEVICE_ADDED     HDA Intel PCH Front Mic           seat0 default group3  cap:
-event10  DEVICE_ADDED     HDA Intel PCH Line Out            seat0 default group3  cap:
-event11  DEVICE_ADDED     HDA Intel PCH Front Headphone     seat0 default group3  cap:
-event8   DEVICE_ADDED     HDA Intel PCH Rear Mic            seat0 default group3  cap:
-event2   DEVICE_ADDED     PixArt DynexWired USB Optical Mouse seat0 default group4  cap:p left scroll-nat scroll-button
-event3   DEVICE_ADDED     BTC USB Multimedia Keyboard       seat0 default group5  cap:k
-event4   DEVICE_ADDED     BTC USB Multimedia Keyboard System Control seat0 default group5  cap:k
-event5   DEVICE_ADDED     BTC USB Multimedia Keyboard Consumer Control seat0 default group5  cap:k

[...]
 event2   POINTER_AXIS     +1.848s      vert -15.00/-1* horiz 0.00/0 (wheel)
 event2   POINTER_AXIS     +2.816s      vert 15.00/1* horiz 0.00/0 (wheel)

here is my xinput listing:

stefano@gorgias  $ xinput list-props 8
Device 'PixArt DynexWired USB Optical Mouse':
        Device Enabled (154):   1
        Coordinate Transformation Matrix (156): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        libinput Natural Scrolling Enabled (288):       0
        libinput Natural Scrolling Enabled Default (289):       0
        libinput Scroll Methods Available (290):        0, 0, 1
        libinput Scroll Method Enabled (291):   0, 0, 0
        libinput Scroll Method Enabled Default (292):   0, 0, 0
        libinput Button Scrolling Button (293): 2
        libinput Button Scrolling Button Default (294): 2
        libinput Middle Emulation Enabled (295):        0
        libinput Middle Emulation Enabled Default (296):        0
        libinput Accel Speed (297):     0.000000
        libinput Accel Speed Default (298):     0.000000
        libinput Accel Profiles Available (299):        1, 1
        libinput Accel Profile Enabled (300):   1, 0
        libinput Accel Profile Enabled Default (301):   1, 0
        libinput Left Handed Enabled (302):     0
        libinput Left Handed Enabled Default (303):     0
        libinput Send Events Modes Available (273):     1, 0
        libinput Send Events Mode Enabled (274):        0, 0
        libinput Send Events Mode Enabled Default (275):        0, 0
        Device Node (276):      "/dev/input/event2"
        Device Product ID (277):        6655, 568
        libinput Drag Lock Buttons (304):       <no items>
        libinput Horizontal Scroll Enabled (305):       1

and my current linux version:

stefano@gorgias  $ uname -r
5.5.13-arch1-1

Suggestions appreciated, as I have no idea about where to look next.

Last edited by stefano (2020-04-02 14:56:26)

stefano

Member

Registered: 2011-04-09

Posts: 258

Re: [SOLVED]Mouse wheel lost scroll function in plasma (only) after update

Problem has disappeared, finally, after yesterday's (4/1/2020) update of Xorg (v. 1.20.8-1) and plasma (v. 5.18.4.1-1) and related packages.