Markus Grunwald wrote: > Thunderbird seems to handle fontsizes different than all the other > programs I'm using.
In Testing, if I start Thunderbird from an x-terminal, this is what I see: $ thunderbird No protocol specified Unable to init server: Could not connect: Connection refused Error: cannot open display: :0 There seems to be something wrong with TB in Testing at the moment. TB in Stable works fine, however. As far as I can see, the font size of the UI is determined by the settings for GTK3. If you do not use Gnome, then put the desired font and font size into ~/.config/gtk-3.0/settings.ini (create the file if it does not exist yet), like this: [Settings] gtk-font-name = Liberation Sans 11 (BTW, to use this font, install fonts-liberation.)