Solved the part of trackpoint acceleration today:
Following https://wiki.archlinux.org/index.php/Mouse_acceleration I was able to slow down that pesky acceleration. The loution is to put this line in ~/.xsessionrc:

( sleep 10s; xinput --set-prop 'TPPS/2 IBM TrackPoint' 'libinput Accel Speed' -0.125 ) &

While this solved my immediate problem it still does not tell why tcontrol settings are ignored :-/

Ni


Anno domini 2019 Sun, 10 Feb 18:07:25 +0100
 Dr. Nikolaus Klepp scripsit:
> Anno domini 2019 Sun, 10 Feb 09:22:37 -0500
>  Felix Miata scripsit:
> > [...]
> > The purging of pt as a physical unit doesn't just show up in unexpected page text sizing. It also
> > has affected optional themes, and some internal theming. Mix in a GTK3 problem[1][2] and HiDPI
> > mutations, and you get a good definition of unpredictable.
> > 
> > [1] https://bugzilla.gnome.org/show_bug.cgi?id=757142
> > Recent change breaks HiDPI setup based on calculated or forced DPI
> > https://bugzilla.mozilla.org/show_bug.cgi?id=1269274
> > UI text sizes no longer inherited from Linux system
> > [2] https://bugzilla.opensuse.org/show_bug.cgi?id=1022830
> > GTK3 apps not honoring system-wide DPI settings nor KDE mouse cursor
> > This bug's fix counters the GTK problem upstream created. I've not seen evidence any other distro
> > has offered this solution.
> 
> Hi Felix!
> 
> Sounds like Windows font desaster arrived on linux, at last :-(
> 
> In the meantime I found a workaround for GTK2 applications (some use way too big fonts):
> cp ~/.gtkrc-2.0 ~/.unison-gtkrc-2.0
> chande the font size there - looks like it overrides dpi settings, then use that config for the applation:
> GTK2_RC_FILES=~/.unison-gtkrc-2.0 unison-gtk
> 
> I think that's what you get when marketing takes over development.
> 
> Nik
> 



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