On Wednesday 25 May 2016 17:19:11 Hans de Goede wrote:

Hi,

On 25-05-16 16:45, Pali Rohár wrote:

quoted

On Wednesday 25 May 2016 14:09:57 Ben Gamari wrote:

quoted

    [  714.781858] psmouse: psmouse serio1: alps: E6 report: 00 00
    64 [  714.804749] psmouse: psmouse serio1: alps: E7 report:
    73 03 28 [  714.830829] psmouse: psmouse serio1: alps: EC
    report: 73 01 13 [  714.833568] psmouse: psmouse serio1:
    alps: Likely not an ALPS touchpad: E7=73 03 28, EC=73 01 13

Great! This allow us to identify touchpad more precious.

Adding people who signed/acked alps commit which added V8 protocol
support. Above touchpad should has V8 protocol too. And it is with
trackstick.

Any idea why is not recognized?

This is likely one of the new hid based touchpad / trackstick
combo-s.

Allen Hung already wrote:

"We have just confirmed the touchpad on Latitude E7470 is a PS/2 device, 
not an I2C-HID input device."

and

"I got responds from Alps and they confirmed that the Alps devices in 
Dell systems are speaking in protocol V8."

So I would say, it is really PS/2 device and we are missing support for 
it in alps V8 protocol ...

-- 
Pali Rohár
pali.rohar@gmail.com