On Wed, Feb 24, 2016 at 2:09 PM, Xose Vazquez Perez
> Arguably the regression in 4.4 with drm/i915 that causes screen
> flickering in dual monitor setups needs to be looked at before this gets
> released since it will get tiresome quite quickly for end users trying
> to do some work when suddenly one of the screen turns itself off and
> then on again.
I don't see any related patch in Greg's stable-queue for 4.4:
He's over 300 patches behind. They may or may not still be to come.
It's also possible this issue is a new bug and is still present
upstream and there's nothing to backport.
PD: the performance of HyperKitty is really awful!
You should file an issue with upstream Hyperkitty. Nobody that is in
a position to fix it will pay any attention to your drive by sniping
on these lists.