More information. I tried this workaround (Rog131 sugestion): http://kubuntuforums.net/forums/index.php?topic=3113529.0
and I can enable the effects and compositing. But with the effects I have a bad performance with some flickers. Also with the effects enabled I have bad performance on video playback. -- [ATI Radeon x1250] KWin Desktop effects not active by default https://bugs.launchpad.net/bugs/652401 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs