After the 5.6 upgrade i started having graphical glitch with the compositor enabled.
Most of time I have this graphic glitch around windows border, with a blink annoying effect.
Sometime the glitch extend to the entire background desktop, flickering to black, usually, as i move the mouse. Anyone?
I tried, with different opengl setting, and vsync too. My current video setup is a radeon 7970 with opensource driver.
http://imgur.com/bserZBI