[Bug 97914] Redraw lag on Ivy Bridge since 1f6dfc9df678

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97914

--- Comment #39 from Andreas Reis <andreas.reis at gmail.com> ---
Any update on the status of the "Update the drawables once per render" patch /
this bug?

I've been using it ever since (still applies fine to git) since otherwise I'm
continuing to see lags with both my Haswells on the terminal.

That was fine until about 1.5 weeks ago, since when some changes to mesa (I
still have a build from two weeks ago showing no such behavior) made the
Xserver not paint windows anymore, usually within minutes of starting.

(It's fine if I toggle to virtual console and restart X after a pkill, but
it'll freeze it entirely if I don't & switch back to the "nonpainting" X
instead, no longer reacting to any input.)

I'm not sure if that's actually due to some interaction with the patch, esp.
since I still don't know how to exactly reproduce, but it *seems* to go away if
its not applied to the build. Then ofc the lags return.

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