This may be a little after the fact but I had the same exact problem. Receintly upgraded to 14.04 and can can confirm that changing theme manually out of auto and then changing current desktop environment to unity made Wallch function as designed. Thanks for the sollution.
This may be a little after the fact but I had the same exact problem. Receintly upgraded to 14.04 and can can confirm that changing theme manually out of auto and then changing current desktop environment to unity made Wallch function as designed. Thanks for the sollution.