Public bug reported:
This happens to me on both ULTS 22 and ULKTS 24 on FotnConfig in
somewhat different ways:
* In ULTS 24 if there is a file '/etc/fonts/local.conf' then all fonts
are rendered as if the font were not hinted or 'hinting' were 'false'.
This is not noticeable if antialiasing is on, and most users default to
antialiasing.
* In ULTS 22 if there is a file '$XDG_CONFIG_HOME/fontconfig/fonts.conf'
then some fonts are no longer found, or get rendered with rectangular
shapes. I guess not many users customize their font settings.
A telling example from ULTS 22:
$ cat /etc/fonts/conf.d/10-antialias.conf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
<!-- Use the Antialiasing -->
<match target="pattern">
<edit name="antialias" mode="append"><bool>false</bool></edit>
</match>
</fontconfig>
$ cp -p /etc/fonts/conf.d/10-antialias.conf
$XDG_CONFIG_HOME/fontconfig/fonts.conf
$ fc-list 'dejavu sans mono' family
$ rm $XDG_CONFIG_HOME/fontconfig/fonts.conf
$ fc-list 'dejavu sans mono' family
DejaVu Sans Mono
This happens also with a skeleton
'$XDG_CONFIG_HOME/fontconfig/fonts.conf' (or '/etc/fonts/local.conf')
too:
$ cat > $XDG_CONFIG_HOME/fontconfig/fonts.conf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
</fontconfig>
$ fc-list 'dejavu sans mono' family
$ rm $XDG_CONFIG_HOME/fontconfig/fonts.conf
$ fc-list 'dejavu sans mono' family
DejaVu Sans Mono
None of these anomalies happen under ULST 20.
My impression: symptoms vary and are weird, so probably it is something
like a buffer overflow when reading the ".conf" files or the use of not-
initialized memory.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2061995
Title:
ULLTS 22,24: FontConfig broken by including ".conf" file
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