I'm new with Desktop Effects because my previous computer was sloooow with them enabled but now I have a new hardware with an integrated Intel 3100 graphics card, a bad decision now I know, and I can enable Desktop Effects.

But I have a problem with notifications and with krunner because are transparent and I can read text if background is blank. It is so obvious a problem it is clear that I have configured something wrong somewhere but I can not find it.

I using Glassified theme but I test with other themes without lucky.