Re: [PATCH 1/3] RFC: drm: Restrict vblank ioctl to master

On 13.07.2016 15:50, Rainer Hochecker wrote:

Whatever action is taken, it is fine for Kodi. GLX+OML_sync_control is not an option anymore because we need EGL for vaapi. But we can fall back to the invisible window for getting vsync. I never tried using EGL and GLX in the same application, different windows. Any reason why this should not work?

An invisible window may not synchronize with the same output refresh cycle as your output window.