Hi. I love okular so much.

I have been struggling to solve this problem. But I don't find a solution. When I select text in okular, it doesn't show blue mark like this https://nightcrawlerinshadow.files.wordpress.com/2011/08/4-7_pdf_selection.png?w=546&h=600. It's not okular bug. It's occurred because I remove some KDE packages. But I can't recall what packages I removed, cause I use regex for that.

I tried to reinstall okular (because I think apt will handle missing dependencies, but no luck). I also compared my dpkg --list with my friend machine. But the problem doesn't solved.

Any idea how to solve it ?

Thanks lot, I really need okular to works, I use it for many professional works.

Thanks