When I set compositing to opengl 3.1 i have no tearing and kwin is fast and slick. when i reboot i have some tearing and kwin is little bit slower, still fast. the problem is the tearing when scrolling or watching a full screen flash video. it seems that after the reboot the settings are changed back to opengl 2.0. I have an nvidia graphics card.
Steps to Reproduce:
1. Set compositing type to opengl 3.1, no tearing
after reboot there is again tearing.
the compositing type opengl 3.1 should be activated also after reboot.
*** This bug has been marked as a duplicate of bug 32817 ***
*** This bug has been marked as a duplicate of bug 323817 ***