From: John Pisini <jpisini@...>
Date: Mon, 21 Apr 2014 16:06:58 -0700 (PDT)

I would like to use Compton with TDE is it possible? I have tried a few 
things but have yet to get it to work on login. I can manually start it 
after login but can't make it autostart.

Hi John,

Did you had a look there: https://wiki.archlinux.org/index.php/Compton

It explains how to do what you want I think.

Hope this can help you :-)
Regards
Pascal