Public bug reported: I'm testing with a freshly-updated Trusty Tahir daily (2014/March/2) on a Lenovo X1 Carbon (2014 refresh) laptop.
IBM/Lenovo Thinkpad laptops have a "Trackpoint": a red "joystick mouse" in the middle of the keyboard. Historically this is accompanied by three mouse buttons directly below the space bar. One beloved feature: if you hold down the middle mouse button, you can scroll a window up/down/left/right with the Trackpoint. This feature is implemented in X with the "Evdev Wheel Emulation" properties of the xinput driver for the Trackpoint device. The latest Thinkpad laptops (X240, X1 Carbon 2014 refresh) remove the hard buttons, and have a "clickpad" instead of a trackpad. One must use the "soft" mouse buttons provided by the clickpad. But now we have a problem. The clickpad soft buttons are implemented in the Synaptic driver. And the Synaptic driver doesn't support middle-button- scrolling. If I run % xinput --list-props "TPPS/2 IBM TrackPoint" I see property entries starting with "Evdev Wheel Emulation". Setting them on this device doesn't enable middle-button-scrolling. And if I run % xinput --list-props "SynPS/2 Synaptics TouchPad" I don't see those property entries at all. I tried setting them manually with "xinput --set-int-prop" but they were ignored. One of the maintainers of Arch Linux got middle-button-scrolling with a Trackpoint + clickpad to work! But he had to create a new driver. It looks like he started with the evdev driver, and merged in support for the Synaptics and Trackpoint devices. The resulting driver is published here: https://bitbucket.org/esrevinu/xf86-input-evdev-trackpoint It would be fantastic if Ubuntu 14.04 also supported this feature. Thanks! ** Affects: xserver-xorg-input-synaptics (Ubuntu) Importance: Undecided Status: New ** Tags: scrolling trackpoint -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/1287148 Title: Thinkpad clickpad + Trackpoint cannot emulate middle button scrolling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1287148/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
