Comment 21 for bug 196220

Okay, from the investigation so far, it looks like the issue occurred on the intel driver between -1ubuntu2 and -1ubuntu3. That would indicate that our change to switch on "greedy" is what did it.

So the questions we need to answer are - does this work if EXA is on but "greedy" disabled, or will it only work with XAA? While using 2:2.2.1-1ubuntu1 or 2:2.2.1-1ubuntu2, please test both options "EXA" and "XAA". If "EXA" works, then also try setting the "MigrationHeuristic" "greedy" option and see if that reproduces the freeze.