Ubuntu 9.04下PDF文件文字不正常顯示不是一個方案就能解決的。
1.在新立得裡安裝 xpdf-chinese-simplified
2.下載安裝poppler-data-0.1者過程如下：
下載poppler-data-0.1.tar.gz (也可以到官方下載，這是我隨便搜的一個)
解壓放置到/opt文件夾下面。
打開終端進入該目錄：cd /opt/poppler-data-0.1
運行命令：sudo make install datadir=/usr/share
可以了，中文亂碼問題部分解決了，但可能有方框的問題，請看下文
3.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文件如下：
<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>
