Just installed Ubuntu 14.04 and installed Nvidia driver 340.24 and the flicker was there especially on firefox. Managed get rid of it by unchecking "Allow Flipping" under OpenGL in Nvidia settings. However when switching tabs, parts of the page will not display properly until I scroll. Will try downgrading to 331 ver and check if that helps. Also haven't tried the workaround on compiz.
Just installed Ubuntu 14.04 and installed Nvidia driver 340.24 and the flicker was there especially on firefox. Managed get rid of it by unchecking "Allow Flipping" under OpenGL in Nvidia settings. However when switching tabs, parts of the page will not display properly until I scroll. Will try downgrading to 331 ver and check if that helps. Also haven't tried the workaround on compiz.