Well, I turned the sync to blank option on compiz and corrected the refresh rate and the desktop is now usable. It was fast using Ubuntu on Virtualbox on Windows!
Anyway, what I saw with glxgears is this: a constant framerate of 60fps! I don't know if this is a coincidence, but it appears to me that have, somewere, a frame rate limit misconfigured elsewere...
Well, I turned the sync to blank option on compiz and corrected the refresh rate and the desktop is now usable. It was fast using Ubuntu on Virtualbox on Windows!
Anyway, what I saw with glxgears is this: a constant framerate of 60fps! I don't know if this is a coincidence, but it appears to me that have, somewere, a frame rate limit misconfigured elsewere...