PDF turns white in Ubuntu System

turns white in Ubuntu System"/>

PDF turns white in Ubuntu System

PDF turns white in Ubuntu System

I like to read some pdf format files in my spare time.

Recently one of my pdf book turns white, why? Other pdf files work well, only this one.

What is the difference?

Finally, after trying a lot of pdf viewer softwares in ubuntu. I found it was not the problem of the
software. Maybe it is the language.

[System]---->[Administration]---->[Language support]---->[Install/remove language]

I install Chinese(traditional). Ok, it works fine now.