% dvipdfmx main.dvi
main.dvi -> main.pdf
[1
** WARNING ** Invalid glyph name index number: 12502 (>= 12495)
** WARNING ** Invalid TrueType 'post' table...
** ERROR ** Could not obtain necessary font info.
Output file removed.とかで dvipdfmx が落ちる．
ls -arlt /etc/alternatives/fonts-japanese-*
lrwxrwxrwx 1 root root 53 5月 2 21:22 /etc/alternatives/fonts-japanese-gothic.ttf -> /usr/share/fonts/opentype/ipaexfont-gothic/ipaexg.ttf
lrwxrwxrwx 1 root root 53 5月 2 21:22 /etc/alternatives/fonts-japanese-mincho.ttf -> /usr/share/fonts/opentype/ipaexfont-mincho/ipaexm.ttfということで ipaexfont (fonts-ipaexfont-mincho と fonts-ipaexfont-gothic) が怪しい．以下で解決する模様．
% sudo update-alternatives --config fonts-japanese-gothic.ttf
There are 3 choices for the alternative fonts-japanese-gothic.ttf (providing /usr/share/fonts/truetype/fonts-japanese-gothic.ttf).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/share/fonts/opentype/ipaexfont-gothic/ipaexg.ttf 120 auto mode
1 /usr/share/fonts/opentype/ipaexfont-gothic/ipaexg.ttf 120 manual mode
2 /usr/share/fonts/opentype/ipafont-gothic/ipag.ttf 100 manual mode
3 /usr/share/fonts/truetype/ipafont-nonfree-jisx0208/ipag0208_for_legacy_compatibility.ttf 100 manual mode
Press enter to keep the current choice[*], or type selection number: 2
update-alternatives: using /usr/share/fonts/opentype/ipafont-gothic/ipag.ttf to provide /usr/share/fonts/truetype/fonts-japanese-gothic.ttf (fonts-japanese-gothic.ttf) in manual mode
% sudo update-alternatives --config fonts-japanese-mincho.ttf
There are 3 choices for the alternative fonts-japanese-mincho.ttf (providing /usr/share/fonts/truetype/fonts-japanese-mincho.ttf).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/share/fonts/opentype/ipaexfont-mincho/ipaexm.ttf 120 auto mode
1 /usr/share/fonts/opentype/ipaexfont-mincho/ipaexm.ttf 120 manual mode
2 /usr/share/fonts/opentype/ipafont-mincho/ipam.ttf 100 manual mode
3 /usr/share/fonts/truetype/ipafont-nonfree-jisx0208/ipam0208_for_legacy_compatibility.ttf 100 manual mode
Press enter to keep the current choice[*], or type selection number: 2
update-alternatives: using /usr/share/fonts/opentype/ipafont-mincho/ipam.ttf to provide /usr/share/fonts/truetype/fonts-japanese-mincho.ttf (fonts-japanese-mincho.ttf) in manual mode