Bug#612464: libpango1.0-0: characters mis-rendered in many fonts

Daniel Kahn Gillmor dkg at fifthhorseman.net
Tue Feb 8 16:18:19 UTC 2011


Package: libpango1.0-0
Version: 1.28.3-1+squeeze1
Severity: normal

Depending on the selected font (and at different sizes) i regularly
see garbled renderings.  these usually take the form of several glyphs
in a font missing some part of their body, often entire horizontal
stripes missing.

This happens in different applications, so i think it belongs to the
underlying font rendering library.  If you think it should be
reassigned to something other than pango, i would welcome a suggestion
of where.

I've attached two screenshots (made with "xwd | convert -
bad-font-$whatever.png") that capture two different examples of broken text.

in bad-font-iceweasel.png you can see that the lower-case "t" is
missing part of its stem.

in bad-font-gnome-specimen.png you can see several glyphs are chopped
up.

Let me know if there is more debugging information i can provide.

    --dkg

-- System Information:
Debian Release: 6.0
  APT prefers testing
  APT policy: (500, 'testing'), (200, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.37-trunk-686 (SMP w/1 CPU core)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libpango1.0-0 depends on:
ii  libc6                  2.11.2-10         Embedded GNU C Library: Shared lib
ii  libcairo2              1.8.10-6          The Cairo 2D vector graphics libra
ii  libfontconfig1         2.8.0-2.1         generic font configuration library
ii  libfreetype6           2.4.2-2.1         FreeType 2 font engine, shared lib
ii  libglib2.0-0           2.24.2-1          The GLib library of C routines
ii  libpango1.0-common     1.28.3-1+squeeze1 Modules and configuration files fo
ii  libthai0               0.1.14-2          Thai language support library
ii  libx11-6               2:1.3.3-4         X11 client-side library
ii  libxft2                2.1.14-2          FreeType-based font drawing librar
ii  libxrender1            1:0.9.6-1         X Rendering Extension client libra
ii  zlib1g                 1:1.2.3.4.dfsg-3  compression library - runtime

libpango1.0-0 recommends no packages.

libpango1.0-0 suggests no packages.

-- no debconf information
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