Comment 94 for bug 1305522

To follow up on my last comment, here are details from my machine where touchpad and touchscreen are both fully functional:

:~$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ATML1000:00 03EB:842F id=10 [slave pointer (2)]
⎜ ↳ DLL05E3:01 06CB:2734 id=11 [slave pointer (2)]
⎜ ↳ PS/2 Synaptics TouchPad id=14 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ Integrated Webcam id=9 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
    ↳ Dell WMI hotkeys

$ dmesg | grep psmouse
[ 2.209923] psmouse serio1: synaptics: Unable to query device.
[ 7.566269] psmouse serio1: Failed to enable mouse on isa0060/serio1

$ lsmod | grep psmouse
psmouse 106678 0