https://devtalk.nvidia.com/default/topic/525074/linux/image-tear-with-
kwin-compositing-and-vsync-on/
"glWaitVideoSync() works as intended, but doesn't really provide a way
to present in a tear-free way. The proper way to fix this on the KWin
side would be to implement support for the new GLX_EXT_
I can confirm this behavior on up to date Archlinux (KDE 4.9.3, nvidia
blob 310.19, video card - gtx650 ti). This tearing shows up regardless
of vsync in nvidia-settings. When I turn on vsync in kwin tearing will
come up. However, NOT immediately - after a few seconds.
I didn't encounter this beha
