Comment 182 for bug 1728244

@Boris, there is a mention in this Arch Linux discussion thread of Kernel 4.14.04 and 4.14-rc7 working for your touchpad:
https://bbs.archlinux.org/viewtopic.php?pid=1768446#p1768446
 I don't know why kernel 4.18 would not also have this fix. If it works, then just don't update the kernel.
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc7/

[PS!] See this. There there is at least one other bug already open on this specific to the ALPS0001 touchpad: https://bugzilla.redhat.com/show_bug.cgi?id=1569422