Ubuntu 9.04中PDF文檔出現方框

在終端輸入

sudo gedit /etc/fonts/conf.d/69-language-selector-zh-cn.conf

修改69-language-selector-zh-cn.conf檔案如下：

<fontconfig>
<match target="pattern">
<test qual="any" name="family">
<string>serif</string>
</test>
<edit name="family" mode="prepend" binding="strong">
<string>DejaVu Serif</string>
<string>AR PL UMing CN</string>
<string>AR PL UKai CN</string>
<string>AR PL ZenKai Uni</string>
<string>AR PL ShanHeiSun Uni</string>
<string>Bitstream Vera Serif</string>
<string>WenQuanYi Bitmap Song</string>
</edit>
</match>
<match target="pattern">
<test qual="any" name="family">
<string>sans-serif</string>
</test>
<edit name="family" mode="prepend" binding="strong">
<string>WenQuanYi Bitmap Song</string>
<string>AR PL UMing CN</string>
<string>AR PL UKai CN</string>
<string>AR PL ZenKai Uni</string>
<string>WenQuanYi Zen Hei</string>
<string>Bitstream Vera Sans</string>
<string>AR PL ShanHeiSun Uni</string>
<string>DejaVu Sans</string>
</edit>
</match>
<match target="pattern">
<test qual="any" name="family">
<string>monospace</string>
</test>
<edit name="family" mode="prepend" binding="strong">
<string>DejaVu Sans Mono</string>
<string>Bitstream Vera Sans Mono</string>
<string>WenQuanYi Bitmap Song</string>
<string>AR PL UMing CN</string>
<string>AR PL UKai CN</string>
<string>AR PL ZenKai Uni</string>
<string>WenQuanYi Zen Hei</string>
<string>AR PL ShanHeiSun Uni</string>
</edit>
</match>
</fontconfig> 

一定要做完第二步，不然還是會出現方框的問題，

把第二個大項中的第一項改成WenQuanYi Bitmap Song

我的機子上是改成是WenQuanYi Micro Hei，這樣就行拉，謝謝原作者提供的這麼好的方法。