Hi again! Thanks a lot for your help. This is the result of your suggestions:
xfd -fn fixed WORKS xfd -fa serif DOESN'T WORK: no font to displayIf I try to launch firefox, I get the unusable fonts displayed and I cannot see the characters again.
I've checked the installed fonts: gsfonts-x11 ttf-unfonts ttf-unfonts-extra unifont xfonts-base xfonts-encodings xfonts-scalable What could I try now? Thanks a lot again for your help! Jose