Font problem: Rectangular blocks

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I recently upgraded from a modified Redhat 6.2 to Redhat 7.2.  I'm now
having some strange font problems.  Certain sizes of some fonts in certain
applications do not appear as letters: instead, I see rectangular blocks
with dotted outlines.  Interestingly, I see one rectangular block for every
*two* characters that should be displayed, suggesting that the problem
somehow involves two-byte fonts.

There's a screenshot of the problem at http://www.mit.edu/~goodmanj/fontbug.jpg

I've noticed the problem with Gnumeric, Real Player 8, xmms, and maybe some
others which I've forgotten.  In some cases, I can solve the problem by
configuring the program to use a different font, but not all programs are
that configurable.

Interestingly, in Gnumeric, text typed into a currently-selected cell is
visible, but text in unselected boxes shows up as rectangles.

I have the following font-related packages installed:
VFlib2-2.25.1-20
tetex-afm-1.0.7-30
XFree86-ISO8859-15-100dpi-fonts-4.1.0-3
ghostscript-fonts-5.50-3
ttfonts-1.0-4
urw-fonts-2.0-12
freetype-2.0.3-7
chkfontpath-1.9.5-2
tetex-fonts-1.0.7-30
XFree86-75dpi-fonts-4.1.0-3
XFree86-4.1.0-3
XFree86-ISO8859-15-75dpi-fonts-4.1.0-3
XFree86-100dpi-fonts-4.1.0-3
XFree86-xfs-4.1.0-15
ttfonts-ja-1.0-6
fnlib-0.5-9

My XF86Config file has the following font entries:
     FontPath    "/usr/X11R6/lib/X11/fonts/misc:unscaled"
     FontPath    "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
     FontPath    "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
     FontPath    "/usr/X11R6/lib/X11/fonts/URW"
     FontPath    "/usr/X11R6/lib/X11/fonts/misc/"
     FontPath    "/usr/X11R6/lib/X11/fonts/Type1/"
     FontPath    "/usr/X11R6/lib/X11/fonts/Speedo/"
     FontPath    "/usr/X11R6/lib/X11/fonts/75dpi/"
     FontPath    "/usr/X11R6/lib/X11/fonts/100dpi/"

(Shouldn't there be a reference to a Unix port run by Xfs here somewhere?)

Playing with Gnumeric's Format Cell/Font selector, if I select "Helvetica 
Normal", I get rectangles for font sizes 6-10,13,15,18, and 25.  I have no 
problems with font sizes 4,5,11,12,14,16,17,19-24,and 26 and up.  I get 
similar behavior for many, but not all, other fonts in the Gnumeric font 
selector.  More detail on request.

-- 
Jason Goodman, Research Associate, Dept. of Geophysics, Univ. of Chicago
goodmanj@uchicago.edu 	    goodmanj@mit.edu
http://www.mit.edu/~goodmanj/






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