With a little spare time I've been checking what happens in logs while I run `evtest` as per above instruction: `/var/log/dmesg` and `/var/log/Xorg.0.log` - as grepping showed they both reference "SynPS/2 Synaptics TouchPad".
dmesg log was not updating after boot, but I noticed something in Xorg.0.log, which I attach below. Here's the breakdown of the final few lines, that happened while I was checking `less /proc/bus/input/devices` and `evtest`. So here it is: First of ALT+CTRL+F2, as I switch to virtual terminal, I get this: [ 47.820] (II) AIGLX: Suspending AIGLX clients for VT switch I assume nothing unusual and proceed to run `less /proc/bus/input/devices` - observe the device `event5` in the list, that is the TouchPad (as per above comment). I run `sudo evtest /dev/input/event5` and start swiping and clicking the touchpad - nothing yet happens. After a little bit - curiosity kills and ALT+CTRL+F7 - I go check the terminal app that's tailing log files. I notice this: [ 86.672] (II) AIGLX: Resuming AIGLX clients after VT switch [ 86.672] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none [ 86.744] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found [ 92.560] (II) AIGLX: Suspending AIGLX clients for VT switch Switch back to virtual terminal where `evtest` is still running - I continue swiping and clicking touchpad. No events come through. One more come back to X: [ 106.959] (II) AIGLX: Resuming AIGLX clients after VT switch [ 106.959] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none [ 107.028] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found [ 113.552] (II) AIGLX: Suspending AIGLX clients for VT switch And back - still no events. I continue the procedure of clicking, touching and swiping. Eventually - the events start coming in. I CTRL+C `evtest`, log out from VT and come back to X: [ 174.700] (II) AIGLX: Resuming AIGLX clients after VT switch [ 174.700] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none [ 174.760] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found The touchpad sure works and I can move the pointer. Any advice/ideas where to look next - welcome & could look at it next time I have spare time. ** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629613/+attachment/4802134/+files/Xorg.0.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1629613 Title: [Dell XPS 13] SynPS/2 Synaptics TouchPad not recognized after upgrade from 14.04 to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629613/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
