[Intel-gfx] ~2000ms pausing with GNOME3 desktop

[Daniel J Blueman]

I regularly experiencing a ~2000ms pause when clicking on
'Activities'/moving to the top-left corner in the GNOME3 desktop
environment (eg once every 5 mins), both on IVB and SNB and kernels up
to 3.10, seen on an 1920x1200 display on SNB and 2880x1440 display on
IVB (Macbook Retina).

This hurts the user experience with Intel HD graphics on linux. What
kind of profiling would be useful to understand what's stalling
graphics updates? Also, has anyone else experienced this?

Many thanks,
  Daniel
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Daniel J Blueman