The hang looks to be a bug in specifying the tiled subsurface on i915g (the offset is probably not sufficiently well aligned). The corruption in the background is just nautilus not redrawing the root window (since 3.8).
The hang looks to be a bug in specifying the tiled subsurface on i915g (the offset is probably not sufficiently well aligned). The corruption in the background is just nautilus not redrawing the root window (since 3.8).