Dear Maintainers,
I am withholding the upgrade to stretch (for different reasons) on my only debian-based computer using an Intel video chip, but I do have a laptop running xubuntu 16.04.1, which had the same issue as in this bug (and its duplicates #819083, #821871, #828175 and #830664), and it appears that the bug has finally been addresses these past few days, both on (x)ubuntu and upstream (although it is not clear to me whether the issue has indeed been fixed for all chipsets).
Please review the relevant patches or, if deemed preferable, update to a new upstream snapshot - or update the state of this bug if it is indeed fixed as of 2:2.99.917+git20160706-1.
References:
Best regards,
Pier Luigi Pau