[xf86-input-evdev-trackpoint] Still no middle mouse scroll on T440p

Question

Hi all,
This post is related to the launchpad bug "Middle button does not work for scrolling" and to the AUR package "xf86-input-evdev-trackpoint".
Abstract: The synaptics driver is currently not able to emulate scrollling using the middle mouse button on newer ThinkPads (**40 series). This AUR package aims at resolving this issue, but I'm having trouble to make it work.
So I installed the package and rebooted. The new file "90-evdev-trackpoint.conf" appeared in my /etc/X11/xorg.conf.d folder and the installation went fine. However:
My left and middle mouse buttons are not recognized afterwars, only my right mouse button works
I still have no middle mouse button scrolling feature
Maybe worth mentioning:
I do not use the testing repo
KDE desktop
System is up-to-date
The 90-.... Xorg conf file is the highest conf file number (so the settings should not be overridden)
Anyway, thanks for the effort to get that touchpad going, and thank you for your help!
Regards,
Laurent

Answer 1

Hi,
I played around with the config files, and have some results by now. Note that I use the touchpad too, which causes some more problems.
So the source of the problem was apparently my 50-synaptics.conf, in which the Touchpad sections used the "synaptics" driver. There were 2 occurrences, if I change both, it works!
However:
synaptics provides MUCH better usability than evdev, if you do not configure everything by now. Especially important was the hysteresis, which made normal touchpad clicks usable again.
tap-clicks are triggered too sensibly (with too little pressure on the touchpad). I think this is evdev related and only a setting, but I couln't fine one. Have you got an idea?
As I use the SoftButtonAreas and AreaTopEdge settings, the top border of my touchpad should emulate the three "classic" ThinkPad buttons, and the mouse pointer should not move. This worked fine with synaptic. Now that the driver is evdev, only the middle and right area react to those classic clicks, but the left mouse button area is dead. I have absolutely no idea how to get it back without having mouse pointer movements in those areas. Any suggestions?
Middle click events are not always delivered reliably
Btw: tap-to-click and normal click generally work fine in the areas below AreaTopEdge.
So, have you got an idea how to get the "dead" area working again?
And, why did you use evdev, and not synaptics? I assume you have to make evdev work before synaptics can work, no?
Furthermore: why did you disable your touchpad?
At last, my config files:
50-synaptics.conf
# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
# Option "OptionName" "value"
Section "InputClass"
Identifier "touchpad catchall"
Driver "evdev"
MatchIsTouchpad "on"
Option "TapButton1" "1"
Option "TapButton2" "3"
Option "TapButton3" "2"
# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
MatchDevicePath "/dev/input/event*"
EndSection
Section "InputClass"
Identifier "touchpad ignore duplicates"
MatchIsTouchpad "on"
MatchOS "Linux"
MatchDevicePath "/dev/input/mouse*"
Option "Ignore" "on"
EndSection
# This option enables the bottom right corner to be a right button on
# non-synaptics clickpads.
# This option is only interpreted by clickpads.
Section "InputClass"
Identifier "Default clickpad buttons"
MatchDriver "evdev"
Option "SoftButtonAreas" "60% 0 0 2600 40% 60% 0 2600"
Option "AreaTopEdge" "2600"
Option "PalmDetect" "1"
Option "HorizTwoFingerScroll" "1"
Option "HorizHysteresis" "30"
Option "VertHysteresis" "30"
Option "FingerPress" "100"
# Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
# To disable the bottom edge area so the buttons only work as buttons,
# not for movement, set the AreaBottomEdge
# Option "AreaBottomEdge" "82%"
EndSection
Section "InputClass"
Identifier "trackpoint catchall"
MatchIsPointer "true"
MatchProduct "TrackPoint|DualPoint Stick"
MatchDevicePath "/dev/input/event*"
Option "EmulateWheel" "1"
Option "EmulateWheelTimeout" "200"
Option "EmulateWheelButton" "2"
Option "XAxisMapping" "6 7"
Option "YAxisMapping" "4 5"
EndSection
# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
Identifier "Disable clickpad buttons on Apple touchpads"
MatchProduct "Apple|bcm5974"
MatchDriver "synaptics"
Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection
90-evdev-trackpoint.conf
Section "InputClass"
Identifier "TrackPoint"
MatchProduct "TrackPoint"
MatchDriver "evdev"
Option "EmulateWheel" "1"
Option "EmulateWheelButton" "2"
Option "XAxisMapping" "6 7"
EndSection
Thanks for your time, and keep up the great work!
Regards,
Laurent
Last edited by LimaSierra (2013-12-12 15:53:07)