Kent West wrote: > I have a brand new Dell Latitude 5590 laptop on which I've installed Debian > 9.6. > > An external mouse works fine, but the finger-stick pointer doesn't work > (which I don't really care about), and the trackpad doesn't work right > (which hampers me). > > The trackpad moves the mouse-pointer fine, but the top two buttons do > nothing (don't really care), and the bottom left is a secondary click and > the bottom right is a middle click (as reported by the "Test Your Settings" > area of the "Mouse & Touchpad" utility), and the"tap on the pad" function > does nothing. > > I found the "Synaptics Touchpad" article on the Debian WIKI, which says > that "egrep -i 'synap|alps|etps|elan' /proc/bus/input/devices" will tell me > the type of touchpad I have, but that returns nothing, as does a simpler > "ls -lah /proc/bus/input/devices". > > This document also suggested installing xserver-xorg-input-libinput (was > already installed), xserver-xorg-input-evdev (I've since installed and > rebooted), and xserver-xorg-input-mouse (I've since installed and > rebooted), and to not have xserver-xorg-input-synaptics. > > Interestingly, during the original install, the trackpad did not work. I > didn't worry about plugging in an external at that time, nor worry about it > at that time, figuring it'd be an easy fix post-install (but it's not been). > > Googling has pointed at a lot of old material, and suggested the synaptics > driver (which the WIKI above suggests against), etc, so I'm not sure what > the canonical way is to go about fixing this. Any suggestions would be > appreciated. >
Google tells me you have a IEI Integration Corp DELL0817:00 044E:121F Touchpad and that this is a HID over I2C device, which requires the following kernel modules: intel-lpss-pci i2c-hid hid-multitouch and then it will work. My Stretch system has all three of those (4.9.0-8-amd64), so try modprobing them all and see what results you get. -dsr-