I searched for a very long time and I can't find anything that fixes the issue.
My issue is not only that my touchpad doesn't work, but that it isn't detected.
The command from the debian wiki returns nothing (
egrep -i 'synap|alps|etps' /proc/bus/input/devices)
$ uname -a Linux slava-Aspire-E5-773G 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:41:40 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
I suspect that it is a driver issue, however I have no idea how to check that and even less fix it.
A fix or debugging assistance would be very nice ^^