Hello, since this thread is active, and I couldn't find bug report like this, I am posting it here. Using following configuration:
I have following bugs, apart from inability to turn on KMS
Using glxgears as benchmark..yes I know it is not really.
In non compositing environment, when glxgears window origin is moved out of current desktop(left and up coordinates), rendering stops (shows last rendered frame, clipped with the window border of-course) frames go high ~4000 as of my hardware RS780.
On the other hand, when the glxgears window is under other window, entirely, frames drop down to ~100.
When simultaneously origin outside desktop and covered by window entirely FPS are ~100 too.
In compositing environment, when moving window with GL context, window moves (content black), but GL rendering context stays(and continue to render) on the old place, above any windows. When I finish the move, then it moves in to GL window as usual. When the window origin is moved beyond desktop dimensions, window content stays black.
Please if not appropriate here, tell me where I should post this issues.