Comment # 5 on bug 913016 from Egbert Eich

(In reply to jean-christophe baptiste from comment #4)
> Hello,
> 
> Please reopen this bug for Leap.This is NOT a configuration issue, there is
> a driver patch for that.
> 
> I have one of these Thinkpad (S540) with a trackpoint that does not have
> physical buttons.
> 
> See this article and the first photo to illustrate what I mean:
> 
> http://mariospr.org/2015/03/30/bringing-sanity-back-to-my-t440s/
> 
> In Leap, the mapping is incorrect, so the trackpoint middle button does not
> support scrolling.
> 
> The workaround in the article above might work even though it is aimed to
> Fedora.
> 
> But disabling the synaptics driver is not a clean solution.
> 
> A while ago, a kernel patch was offered :
> 
> https://bugs.freedesktop.org/show_bug.cgi?id=88609
> 
> For some reason, it seems not to be applied in Leap.
> As said, it works out of the box on other distro, including Fedora.
> 
> Could you check if this patch is included and, if not, could it be added
> please?

6067fe5e0bf29f525561c8281d01011cfc9ebbd4 and
cdd9dc195916ef5644cfac079094c3c1d1616e4c et al. are all in the leap 42.1
kernel.
You can convince yourself by cloning git://kernel.opensuse.org/kernel.git
and checking out the origin/openSUSE-42.1 branch.

Right now, I really don't know how I can help you here.
Could you please provide an Xserver log file and run evtest on the device?