At the moment, my 2D acceleration in the radeon driver seems to work very well. However, I suffer from visual tearing. I notice it during video playback, my screensaver, dragging windows, everything. It's very unpleasant to the eye. If you aren't sure what this is or if it's happening to you then check out this page to learn about what I mean by tearing. Am I correct that this happens because there is no vsync support in the driver? Is there plans for fixing that in the future? Just wondering.
As I understand, 2d vsync basically doesn't exist, except for Xv. I think it would be possible to implement, but as far as I know, no one has yet. However, I have noticed that the tearing is worse than could be accounted for from simple vsync issues. Is there anyone who can explain this?
I may be wrong but even in the nvidia drivers there's no support for 2d syncing. I suffer from the same problem (although I have an nvidia graphics card) and have been looking for a solution.
The only "solution" I've found is to run compiz, because since it renders through opengl the drivers are able to sync. That's not really a viable solution for me though.
Most people have this problem but they don't really notice it, for me it really pisses me to see a window tear while I'm moving it. I wish I had the skills to solve this problem but I don't, and unfortunately I don't see a solution for this in the near future.