搞定Ubuntu Linux 自带pdf文档阅读的中文显示问题

bunt gutsy中自带Evince文档阅读器可以阅读pdf文件，但是在阅读中文文档的时候经常出现乱码。
刚刚在网络上search，发现很多人对这个问题都不是很清楚，没有经过自己test就将solution贴的到处都是。
My solution on Ubuntu 7.10:
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sudo apt-get install xpdf-chinese-simplified
sudo apt-get install xpdf-chinese-traditional
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装了这两个字体后，一些中文pdf显示正常，但是还有一部分中文pdf显示仍然不正常，
到网上下poppler-data_0.1.1-1_i386.deb，
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sudo dpkg -i poppler-data_0.1.1-1_i386.deb
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一切ok了!
Good luck to the one who has the same problem.