TrueType font is missing table

Using mpl 1.4.3 on Fedora 22, I'm trying to use stix font (so I can render
the unicode lambda label on the x-axis). I have every fedora package
related to 'stix', I think. It displays ok in qtagg4, but if I try to save
to pdf if fails with

RuntimeError Traceback (most recent call last)
<ipython-input-2-7dee58c07264> in <module>()
----> 1 exec(open(r'/usr/tmp/python-8710q1Y.py').read()) # PYTHON-MODE

<string> in <module>()

/usr/lib64/python3.4/site-packages/matplotlib/pyplot.py in savefig(*args,
**kwargs)
    575 def savefig(*args, **kwargs):
    576 fig = gcf()
--> 577 res = fig.savefig(*args, **kwargs)
    578 draw() # need this if 'transparent=True' to reset colors
    579 return res

/usr/lib64/python3.4/site-packages/matplotlib/figure.py in savefig(self,
*args, **kwargs)
   1474 self.set_frameon(frameon)
   1475
-> 1476 self.canvas.print_figure(*args, **kwargs)
   1477
   1478 if frameon:

/usr/lib64/python3.4/site-packages/matplotlib/backend_bases.py in
print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format,
**kwargs)
   2209 orientation=orientation,
   2210 bbox_inches_restore=_bbox_inches_restore,
-> 2211 **kwargs)
   2212 finally:
   2213 if bbox_inches and restore_bbox:

/usr/lib64/python3.4/site-packages/matplotlib/backends/backend_pdf.py in
print_pdf(self, filename, **kwargs)
   2489 file.endStream()
   2490 else: # we opened the file above; now finish
it off
-> 2491 file.close()
   2492
   2493

/usr/lib64/python3.4/site-packages/matplotlib/backends/backend_pdf.py in
close(self)
    523 self.endStream()
    524 # Write out the various deferred objects
--> 525 self.writeFonts()
    526 self.writeObject(self.alphaStateObject,
    527 dict([(val[0], val[1])

/usr/lib64/python3.4/site-packages/matplotlib/backends/backend_pdf.py in
writeFonts(self)
    626 chars = self.used_characters.get(stat_key)
    627 if chars is not None and len(chars[1]):
--> 628 fonts[Fx] = self.embedTTF(realpath, chars[1])
    629 self.writeObject(self.fontObject, fonts)
    630

/usr/lib64/python3.4/site-packages/matplotlib/backends/backend_pdf.py in
embedTTF(self, filename, characters)
   1101
   1102 if fonttype == 3:
-> 1103 return embedTTFType3(font, characters, descriptor)
   1104 elif fonttype == 42:
   1105 return embedTTFType42(font, characters, descriptor)

/usr/lib64/python3.4/site-packages/matplotlib/backends/backend_pdf.py in
embedTTFType3(font, characters, descriptor)
    887 # actual outlines)
    888 rawcharprocs = ttconv.get_pdf_charprocs(
--> 889 filename.encode(sys.getfilesystemencoding()),
glyph_ids)
    890 charprocs = {}
    891 for charname, stream in six.iteritems(rawcharprocs):

RuntimeError: TrueType font is missing table