I am running the newest drivers and kernel. I'm running on a Lenovo laptop. Oddly enough, when I had an external monitor connected, and was only outputting to that, sync to vblank worked correctly. Now that I'm using the built-in laptop LCD, it sync to vblank causes the ~0.5Hz update issue. I'm not sure what the problem is. Maybe I need to do some dpkg-reconfigure'ing somewhere...?
I am running the newest drivers and kernel. I'm running on a Lenovo laptop. Oddly enough, when I had an external monitor connected, and was only outputting to that, sync to vblank worked correctly. Now that I'm using the built-in laptop LCD, it sync to vblank causes the ~0.5Hz update issue. I'm not sure what the problem is. Maybe I need to do some dpkg-reconfigur e'ing somewhere...?