Under Ubuntu 14.04, the trackpoint buttons (now again physical as opposed to X240) do not work properly. Left Button scrolls up, right button scrolls down, middle button does nothing.
How to resolve this issue?
Jens Erat
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paulpaul
4 Answers
The problem is that Xorg will use the synaptics driver, which is not yet capable of handling the new hardware correctly. This can be circumvented by using evdev, and forcing the psmouse module, which takes care of the device at kernel-level, to recognize the device as legacy ImPS mouse.
No need to update your kernel, this works:
Note: This solution works without updating your kernel. I have verified this with Linux Mint 17.1 64bit (kernel 3.13), Ubuntu 14.10 and Kubuntu 14.10 (both kernel 3.16). However, I also completely disabled the touchpad in the Lenovo BIOS. Disabling it there has no consequences without the instructions above, but is enforced when evdev is used as X driver, rather than synaptics.
Step (3) is not covered by the original blogpost at vimtips. Also, the code listing there has a typo (YAcisMapping).
Edit: Touchpad and Trackpoint, both are working out of the box (with synaptics) as of Ubuntu 15.04 (including all flavors).
Erik SonnleitnerErik Sonnleitner
This solution works:
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1.) update kernel 3.18.72.) create file psmouse.conf then edit trackpoint buttons
paulpaul
The problem is gone with Ubuntu 15.04. So, if you just bought your X250, you may wish to upgrade to this version.
Yossi GilYossi Gil
The problem is that Xorg will use the synaptics driver, which is not yet >capable of handling the new hardware correctly. This can be circumvented >by using evdev, and forcing the psmouse module, which takes care of the >device at kernel-level, to recognize the device as legacy ImPS mouse.
No need to update your kernel, this works:
Add the file /etc/modprobe.d/psmouse.conf with the following contents:
options psmouse proto=imps
Add the file /usr/share/X11/xorg.conf.d/90-evdev.conf:
Section 'InputClass' Identifier 'Touchpad/TrackPoint' MatchProduct 'PS/2 Synaptics TouchPad' MatchDriver 'evdev' Option 'EmulateWheel' '1' Option 'EmulateWheelButton' '2' Option 'Emulate3Buttons' '0' Option 'XAxisMapping' '6 7' Option 'YAxisMapping' '4 5' EndSection
(May be optional; it is in Mint, it is not in Kubuntu) Update your >initramfs to actually enforce loading the psmouse module correctly:
sudo update-initramfs -u
This can be undone.
I lost two-finger scrolling on my trackpad when I did this. I removed 90-evdev.conf and psmouse.conf and rebooted and it did not revert to the old behavior. After removing the files (the above mentioned files you created when doing this) just run again this command:
sudo update-initramfs -u
and this should bring you back to the way it was before. I would leave a comment, but I guess I need 50 somethings to do that. Sorry admins and mods! Delete if you must..
Linux Mint 14.2 on Lenovo ThinkPad T440p
edited: confirmed my question and updated the question to a response.
ksaiyoksaiyo
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So not even sure this is the right forum since i'm not even sure what the problem is. But long story short I dropped my Lenovo Edge E420 (5 feet onto concrete). The only damage was cosmetic (screen bezel, palm rest, hinges, top case) anyways I ordered the parts and replaced them. I replaced the top case and bezel since my new palmrest hadn't come in yet. When I hooked everything back up (including my broken but functional palmrest/touchpad assembly the touchpad, fingerprint scanner, and trackpoint no longer function.
Lenovo Trackpoint Not Working On Ipad
I hoped it was just a damaged part so I waited till the new palm rest came in. It did today, and I replaced it but it didn't rectify the problem. The weird thing is the trackpoint and touchpad do not share cables and the keyboard works fine. The touchpad/ fingerprint. trackpoint is not showing up in the device manager or bios. I'm running 64 bit Windows 7. I tried updating my synaptics drivers, updating bios but can't get anything to work, or even show that its connected. I'm almost thinking it has to be a software thing since the touchpad and trackpoint are not physically connected. Help? Thanks!
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