Comment 24 for bug 405425

Please don't conflate the RandR configuration with a separate application; these are two separate issues. RandR has known performance and flickering issues which do not have any bearing on environments not using it.

Given that there is no way to avoid tearing using core X interfaces, the fact that other drivers don't exhibit the same level of tearing is entirely accidental. To fix this in general, the Adobe Air application will need to use some API which avoids tearing. The only candidates today are either Xv or OpenGL; we simply don't have a core X API that solves this problem available to us.