Comment 118 for bug 1098489

Created attachment 82127
Scroll with intel_gpu_top

I've captured video when problem appears and when doesn't
(Attaching only frame)

Using some past kernel 3.10 b2c311075db578f1433d9b303698491bfa21279a
(as of now - current vanilla)

Using current xf86 tree 5aaab9ea0310d48bb1a1ca20308d1c9721a9de3f
(as of now)

Running Firefox scroll when I've managed to trigger problem
(seem opening a lot of pages with small icons on them helps to speedup this process)

As could be seen - intel_gpu_top shows quite high usage there.
Machine has been otherwise unloaded.
During scrolling those percentages were quite the same.