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Date: Tue, 29 Sep 2009 07:04:32 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Rohit Grover <rgrover1@gmail.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Laggy X11 after updating to 8.0-RC1
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On Tue, 29 Sep 2009, Rohit Grover wrote:
> I did a 'pkg_delete -a' to delete all packages, and then installed
> fresh packages from the 8.0-RC1 DVD as necessary. I'm back to a useful
> system and  X11 isn't lagging anymore.
>
> I hope someone investigates why X11 didn't behave well right after
> updating the kernel/world/some-packages.

Please confirm the presence or absence of the AllowEmptyInput option in 
your xorg.conf.

I tested yesterday and found that "AllowEmptyInput" "off" with dbus/hal 
running produced exactly the behavior you describe.

A FreeBSD major version upgrade with mixed old a new libraries can 
certainly cause problems, but the specific "laggy X11" problem is more 
likely due to that option.

-Warren Block * Rapid City, South Dakota USA