On Thu, 13 Dec 2018, Felmon Davis wrote:

> greets!
>
> don't know if it's related to Stretch - I recently upgraded from Jessie (now 
> somewhat to my regret) - but I did an update of Firefox via the Mozilla 
> online update.
>
> subsequently (and as an effect?) Firefox lost vertical scrollbars. I tried 
> various things with the themes (unsystematically) and now have a circumstance 
> where I get:
>
> "GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is 
> not supported"
>
> when I try to start Firefox, Pan and Google-Chrome-Stable. online googling 
> has so far yielded nothing useful.
>

I notice this tangle:

ldd /usr/bin/pan |grep gtk
         /opt/trinity/lib/kgtk/libkgtk2.so (0x00007f23e4d9a000)
         libgtk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 
(0x00007f23e4484000)
         libgtk-x11-2.0.so.0 => 
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x00007f23e0bf9000)

so a little gtk-3 mixed with gtk-2; but

ldd /usr/bin/firefox |grep gtk
         /opt/trinity/lib/kgtk/libkgtk2.so (0x00007fad30615000)
         libgtk-x11-2.0.so.0 => 
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x00007fad2ed67000)

f.

-- 
Felmon Davis