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Date:      Thu, 10 Jan 2019 20:36:33 -0000 (UTC)
From:      Christian Weisgerber <naddy@mips.inka.de>
To:        freebsd-x11@freebsd.org
Subject:   Re: Intel modesetting and tearing
Message-ID:  <slrnq3fb6h.2qks.naddy@lorvorc.mips.inka.de>
References:  <slrnq3eqtu.m3o.naddy@lorvorc.mips.inka.de> <CAECmPwvmTzaYO=9_mokOc6nebD1z-VEsyUHpsJE1dwkB%2BsM6aA@mail.gmail.com>

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On 2019-01-10, Johannes Lundberg <johalun0@gmail.com> wrote:

>> And as I found out just today and quite by accident, in Firefox
>> toggling layers.acceleration.force-enabled to true will also eliminate
>> all tearing, whether from soft-scrolling or when playing YouTube
>> videos.  Hallelujah!
>
> Woot?! You mean I can use modesetting AND have tearfree Firefox? Thanks for
> the tip!! I will use this until I switch i3 -> Sway.

It works for me.

Googling for <intel modesetting tearing> brings up suggestions to
run a compositing window manager, typically integrated with some
complex desktop environment (GNOME, XFCE, KDE, ...).

Personally, I just run mwm, the Motif window manager, without any
further desktop environment.  I have received suggestions in the
past to run xcompmgr alongside it, but that only seems to supply
eye candy, which more or less interferes with the window manager,
while having no effect on an application like Firefox.

I'm not very happy to add to the chorus of "I have no idea how any
of this works, but pressing this magic button does it for me!", but
it is what it is.

-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de



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