[PD] font family DejaVu Sans Mono not found on piCore

Hi,

I'm connecting through "ssh -X" to a piCore (i.e TinyCoreLinux for RaspberryPi) headless install on a rPi3 (my desktop is an Ubuntu Linux). When I run Pd with GUI, it can only use the (barely readable, see the attached screenshot) default Courier font:

WARNING: font family 'DejaVu Sans Mono' not found, using default (Courier 10 Pitch)

However, the piCore "dejavu-fonts-ttf.tcz" extension is loaded, and fontconfig apparently does find the DejaVu font, e.g:

~$ fc-list | grep DejaVuSansMono /usr/local/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf: DejaVu Sans Mono:style=Oblique /usr/local/share/fonts/dejavu/DejaVuSansMono-BoldOblique.ttf: DejaVu Sans Mono:style=Bold Oblique /usr/local/share/fonts/dejavu/DejaVuSansMono-Bold.ttf: DejaVu Sans Mono:style=Bold /usr/local/share/fonts/dejavu/DejaVuSansMono.ttf: DejaVu Sans Mono:style=Book

(I have the same kind of results on my Linux desktop).

Is there something I can do to have TclTk load DejaVu? Note that using '-font-face "DejaVu Sans Mono"' doesn't seem to help.

thanks.

Antoine