Re: Dragging a window on Ubuntu Linux desktop results in screen tearing
Try installing "CompizConfig Settings Manager" and in "General options" go to "Display Settings". Disable "detect refresh rate" (automatic detection doesn't work for the proprietary nvidia driver) and instead set it manually to match the refresh rate of your screen (e.g. 60 Hz). Finally enable "Sync To VBlank" in the same tab and you should be good to go.