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TOPIC: Middle mouse button drag problem w. PLC editor

Middle mouse button drag problem w. PLC editor 3 years 7 months ago #10037

  • mhe
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for system-wide persistant setting I changed
/usr/share/X11/xorg.conf.d/11-evdev-trackpoint.conf
# trackpoint users want wheel emulation

Section "InputClass"
        Identifier      "trackpoint catchall"
        MatchIsPointer  "true"
        MatchProduct    "TrackPoint|DualPoint Stick"
        MatchDevicePath "/dev/input/event*"
        Option  "Emulate3Buttons"       "false"
        Option  "EmulateWheel"  "false"
        Option  "EmulateWheelButton"    "2"
        Option  "XAxisMapping"  "6 7"
        Option  "YAxisMapping"  "4 5"
EndSection
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Middle mouse button drag problem w. PLC editor 1 year 1 month ago #11025

  • mhe
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new Thinkpad T490 (if required replace the device-name and numbers)
Ubuntu 20.04.2

This property hides the "MB2-press event" for scrolling the screen with the "special Thinkpad red-Pointing-button hardware"
libinput Button Scrolling Button (343):	2
The "MB2-press event" is not fired at "MB2 press" ... it fires at "MB2 release". So in proviewR no "MB2-hold and move" is possible.
We need to "disable this red-button-scrolling" (not needed, use 2-finger-pad-scrolling) by setting
libinput Button Scrolling Button (343):	0

### what I did ...

review the hardware-events with the tool "xev"
xyz@t490:~$ xev
xyz@t490:~$ xinput list-props "TPPS/2 Elan TrackPoint"
Device 'TPPS/2 Elan TrackPoint':
	Device Enabled (179):	1
	Coordinate Transformation Matrix (181):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Natural Scrolling Enabled (325):	0
	libinput Natural Scrolling Enabled Default (326):	0
	libinput Scroll Methods Available (329):	0, 0, 1
	libinput Scroll Method Enabled (330):	0, 0, 1
	libinput Scroll Method Enabled Default (331):	0, 0, 1
	libinput Button Scrolling Button (343):	2
	libinput Button Scrolling Button Default (344):	2
	libinput Middle Emulation Enabled (335):	0
	libinput Middle Emulation Enabled Default (336):	0
	libinput Accel Speed (337):	-0.220588
	libinput Accel Speed Default (338):	0.000000
	libinput Accel Profiles Available (345):	1, 1
	libinput Accel Profile Enabled (346):	1, 0
	libinput Accel Profile Enabled Default (347):	1, 0
	libinput Left Handed Enabled (339):	0
	libinput Left Handed Enabled Default (340):	0
	libinput Send Events Modes Available (302):	1, 0
	libinput Send Events Mode Enabled (303):	0, 0
	libinput Send Events Mode Enabled Default (304):	0, 0
	Device Node (305):	"/dev/input/event14"
	Device Product ID (306):	2, 10
	libinput Drag Lock Buttons (341):	<no items>
	libinput Horizontal Scroll Enabled (342):	1
xyz@t490:~$ xinput set-prop "TPPS/2 Elan TrackPoint" "libinput Button Scrolling Button" 0


todo: decide about persistent setting
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