[Bug 79370] Screen tearing with Haswell HD 4600

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79370

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
The XFCE compositor doesn't prevent screen tearing, and by default all
frontbuffer rendering in X is allowed to tear. If you want tearfree operation,
you have to specify

Section "Device"
  Identifier "Device0"
  Option "TearFree" "true"
EndSection

in your xorg.conf (or snippet under /etc/X11/xorg.conf.d/tearfree.conf).

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